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y-yosuke / formula-ppoino

A side-by-side two-seater car of the early 2000s formula style
Creative Commons Attribution 4.0 International
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More Front Downforce!! #12

Open y-yosuke opened 8 years ago

y-yosuke commented 8 years ago

CFDの結果を信じる限りにおいてはフロントのダウンフォースが足りないらしい． https://github.com/y-yosuke/formula-ppoino/issues/11#issuecomment-233866299

なのでフロントダウンフォースの増加策を考える． https://github.com/y-yosuke/formula-ppoino/issues/11#issuecomment-233886791 の続き．

CFD 解析をして大雑把な傾向を見ながら開発を進める．

とりあえず S-Duct ほい． 2016-07-22 1 35 41

y-yosuke commented 8 years ago

コピーで新しい Project を作成しているためか URL が1つずつずれる... (T_T) 間違いではない．

fp-023b - Front Aero Devices / SimScale https://www.simscale.com/projects/yosukegb4/fp-023b_control/

fp-023b - Control / SimScale https://www.simscale.com/projects/yosukegb4/fp-023b_test-c_1/

この Control から（当面は？）派生して部品の効きを見る． 効果が制度の問題で分らなかったらもっと細かいメッシュで効きを見る．

y-yosuke commented 8 years ago

S-Duct mesh 2016-07-22 22 44 46

y-yosuke commented 8 years ago

しまった，先に No Fr Flap をやって反応性を見るべきだった．

y-yosuke commented 8 years ago

S-Duct - Control Comparison

Coef. Control S-Duct Difference (%) Remarks
Cm 0.1330 0.12281 -0.01022 (-7.69%)
Cd 0.5510 0.5488 -0.002157 (-0.391%)
Cl -0.1550 -0.1579 -0.002855 (-1.84%) Downforce の増加
Clf 0.05548 0.04382 -0.01165 (-21.0%) Lift の減少
Clr -0.2105 -0.2017 +0.008797 (+4.18%) Downforce の減少
L/D -0.2813 -0.2876 -0.006307 (-2.24%) L/D の向上

S-Duct / fp-023 - Front Aero Devices

forces forces00 output:
sum of forces:
pressure : (189.010245301 -208.653664878 -60.1343191761)
viscous : (16.9684320088 -1.16034174011 0.89117434658)
porous : (0 0 0)
sum of moments:
pressure : (78.8520329094 112.828251548 80.4311111952)
viscous : (-0.103188723743 9.25318915636 11.0062719944)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.122753255461
Cd = 0.548847274259
Cl = -0.157858274375
Cl(f) = 0.0438241182741
Cl(r) = -0.201682392649

Control

forces forces00 output:
sum of forces:
pressure : (189.774551594 -204.506482698 -58.9327120047)
viscous : (17.0136221008 -1.18795618197 0.760867178904)
porous : (0 0 0)
sum of moments:
pressure : (76.3681516223 123.156204543 74.4055919812)
viscous : (-0.082408700122 9.0932366984 11.0652133298)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.132977210555
Cd = 0.551004244533
Cl = -0.155003706637
Cl(f) = 0.0554753572367
Cl(r) = -0.210479063874
y-yosuke commented 8 years ago

S-Duct Post Process

2016-07-23 11 24 42 2016-07-23 11 27 46 2016-07-23 11 31 25 2016-07-23 11 29 56 2016-07-23 11 33 58

y-yosuke commented 8 years ago

Forward Deflector はよく分からない（かった）から次のデバイスは Wheel Inner Cover (Brake Duct) かな．Brake Duct の Outlet が今のところ無いから Cover 的なものだけにする予定だけど．

y-yosuke commented 8 years ago

その前に Wing Profile の変更が先か？ でも Wing Profile の選び方がいまいち分らんし...

y-yosuke commented 8 years ago

or... No Head Light ???

y-yosuke commented 8 years ago

ヘッドライト無しが先だな．というかフロントフラップ無しよりも先ではないか？

y-yosuke commented 8 years ago

No Head Light - Control Comparizon

Coef. Control No Head Light Difference (%) Remarks
Cd 0.5510 0.5410 -0.009976 (-1.81%)
Cl -0.1550 -0.1432 +0.01178 (+7.60%) Downforce の減少
Clf 0.05548 0.06429 +0.008813 (+15.9%) Front Lift の増加
Clr -0.2105 -0.2075 +0.002966 (+1.41%)
L/D -0.2813 -0.2647 +0.01659 (+5.90%) L/D の悪化

No Head Light

forces forces00 output:
sum of forces:
pressure : (185.963987596 -202.29177286 -54.4615004491)
viscous : (17.080265145 -1.18840183838 0.710379161749)
porous : (0 0 0)
sum of moments:
pressure : (73.5338117467 126.131821048 69.9512263763)
viscous : (-0.0547257934216 9.02500352631 11.11020739)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.135900593232
Cd = 0.541028256545
Cl = -0.143224322013
Cl(f) = 0.0642884322255
Cl(r) = -0.207512754239

Control

forces forces00 output:
sum of forces:
pressure : (189.774551594 -204.506482698 -58.9327120047)
viscous : (17.0136221008 -1.18795618197 0.760867178904)
porous : (0 0 0)
sum of moments:
pressure : (76.3681516223 123.156204543 74.4055919812)
viscous : (-0.082408700122 9.0932366984 11.0652133298)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.132977210555
Cd = 0.551004244533
Cl = -0.155003706637
Cl(f) = 0.0554753572367
Cl(r) = -0.210479063874
y-yosuke commented 8 years ago

Wing Profile はとりあえず Control の 40mm から 50mm に厚くしたものを計算するか． 今の Profile はデザイン的に良さそうな NACA の何番か（忘れた）を曲率的にスムースになるようにした適当なものなのだが． 厚さを変えただけでもフェンダーとのつながりの曲面を合わせないといけないので結構面倒... orz

y-yosuke commented 8 years ago

No Head Light - Control / Pressure Comparison - GIF Animation GIFアニメだと色の階調が荒くなってしまうなぁ... それで本当かなぁ... こんな都合の良い結果になるかなぁ... (~_~;) （Firefoxでは同期して表示されるけど，Chromeでは逆相で表示される... からの Firefox もずれてきた！） no-head-light_control_comparison_01 no-head-light_control_comparison_bottom

y-yosuke commented 8 years ago

No Head Light - Control / Pressure Comparison - PNG Pictures GIFにする前のPNGファイルも貼っておく． fr-wing_front_control fr-wing_front_no-head-light fr-wing_bottom_control fr-wing_bottom_no-head-light

y-yosuke commented 8 years ago

No Fr Flap - Control Comparison

Coef. Control No Fr Flap Difference DIfference % Remarks
Cd 0.5510 0.5336 -0.0174 -3.17
Cl -0.1550 -0.03047 +0.1245 +80.3 Downforce の大幅減少
Clf 0.05548 0.2254 +0.1699 +306 Fr Lift の大幅増加
Clr -0.2105 -0.2559 -0.0454 -21.6 Rr Downforce の増加
L/D -0.2813 -0.05711 +0.2242 +79.7 L/D の大幅悪化

No Fr-Flap

forces forces00 output:
sum of forces:
pressure : (183.118993864 -188.385724772 -12.119203565)
viscous : (17.1214202757 -1.30651834498 0.683518707209)
porous : (0 0 0)
sum of moments:
pressure : (51.1007383281 230.240971324 48.3374569111)
viscous : (0.0440038353818 9.06392678954 11.1839704244)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.240621794123
Cd = 0.53355719598
Cl = -0.0304713310399
Cl(f) = 0.225386128603
Cl(r) = -0.255857459643

Control

forces forces00 output:
sum of forces:
pressure : (189.774551594 -204.506482698 -58.9327120047)
viscous : (17.0136221008 -1.18795618197 0.760867178904)
porous : (0 0 0)
sum of moments:
pressure : (76.3681516223 123.156204543 74.4055919812)
viscous : (-0.082408700122 9.0932366984 11.0652133298)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.132977210555
Cd = 0.551004244533
Cl = -0.155003706637
Cl(f) = 0.0554753572367
Cl(r) = -0.210479063874
y-yosuke commented 8 years ago

Front Wing Profile Thickness 40mm → 50mm / Control - Coefficients Comparison

Coef. Control Fr Wing t50 Difference DIfference % Remarks
Cd 0.5510 0.5504 -0.0006230 -0.113
Cl -0.1550 -0.1521 +0.002928 +1.89
Clf 0.05548 0.04254 -0.01294 -23.3 Fr Lift の減少
Clr -0.2105 -0.1946 +0.01587 +7.54 Rr Downforce の減少
L/D -0.2813 -0.2763 +0.005002 +1.78

Fr Wing t50

forces forces00 output:
sum of forces:
pressure : (189.57605045 -204.860328573 -57.8362984627)
viscous : (16.9783139745 -1.18385305872 0.763498594613)
porous : (0 0 0)
sum of moments:
pressure : (76.1897487907 108.875470887 75.9412660267)
viscous : (-0.085452299519 9.05053303944 11.0346626722)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.118574951295
Cd = 0.550381240335
Cl = -0.152075210167
Cl(f) = 0.0425373462117
Cl(r) = -0.194612556379
y-yosuke commented 8 years ago

Front Wing Profile Thickness 40mm → 50mm / Control - Pressure Comparison Picture fp-023b_fr-wing_t50-t40_bottom fp-023b_fr-wing_t50-t40_top

y-yosuke commented 8 years ago

Fr Flap Angle +15 deg / Control - Coefficients Comparison

Coef. Control Fr Flap +15deg Difference DIfference % Remarks
Cd 0.5510 0.5676 +0.01663 +3.02
Cl -0.1550 -0.1625 -0.007519 -4.85 Downforce の増加
Clf 0.05548 0.01918 -0.03630 -65.4 Fr Lift の減少
Clr -0.2105 -0.1817 +0.02878 +13.7 Rr Downforce の減少
L/D -0.2813 -0.2863 -0.005006 1.78

Fr Flap Angle +15 deg

forces forces00 output:
sum of forces:
pressure : (196.141029969 -204.623799124 -61.7673440098)
viscous : (16.8867651451 -1.15449314662 0.773799086001)
porous : (0 0 0)
sum of moments:
pressure : (77.4477771541 90.8383305757 85.8146981629)
viscous : (-0.107658524065 9.05275146911 10.9530665667)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.100440783151
Cd = 0.567630233463
Cl = -0.162522360644
Cl(f) = 0.0191796028293
Cl(r) = -0.181701963473
y-yosuke commented 8 years ago

Front Fender Narrow Pillar / Front Wing t50 - Comparison of Coefficients

Coef. Fr Wing t50 Fr Fender Nrw Pillar Difference DIfference % Remarks
Cd 0.5504 0.5462 -0.004190 -0.761
Cl -0.1521 -0.1256 +0.02644 +17.4 Decrease of Downforce
Clf 0.04254 0.08497 +0.04243 +99.7 Increase of Front Lift
Clr -0.1946 -0.2106 -0.01598 -8.21 Increase of Rear Downforce
L/D -0.2763 -0.2300 +0.04630 +16.8 
forces forces00 output:
forceCoeffs forceCoeffs01 output:
Not seen in the solver log
y-yosuke commented 8 years ago

Front Wheel Deflector - t10 / R5 まずは板状の単純なもので様子を見る．良さそうだったら隅に Fillet をかけたものなどを試す． この Wheel Deflector のために Wheel House (Inner Fender) の面も新規のもの． 2016-08-02 18 34 20

y-yosuke commented 8 years ago

Front Wheel Deflector - t10 / R5

Coef. Fr Wing t50 Fr Wheel Deflector Difference DIfference % Remarks
Cd 0.5504 0.5617 +0.01131 +2.05
Cl -0.1521 -0.1531 -0.0009862 -0.65
Clf 0.04254 0.04383 +0.001297 +3.05 Increase of Front Lift
Clr -0.1946 -0.1969 -0.002284 -1.17
L/D -0.2763 -0.2725 0.003807 +1.38

Front Wheel Deflector - t10 / R5

forces forces00 output:
sum of forces:
pressure : (193.707780182 -196.990037485 -58.2442743627)
viscous : (17.0908558551 -1.31879862456 0.80134780687)
porous : (0 0 0)
sum of moments:
pressure : (74.3500358973 110.573170537 57.8991464326)
viscous : (-0.0261075585812 9.13352486127 11.1526946485)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.120365441921
Cd = 0.561690454163
Cl = -0.153061443433
Cl(f) = 0.0438347202043
Cl(r) = -0.196896163638
y-yosuke commented 8 years ago

どこかで Fr Wing t50 と S-Duct を中心にしたセットで Control を置き換えたいのだが... どのタイミングか迷い中．

y-yosuke commented 8 years ago

Front Inner Fender Mod / Front Wing t50 - Comparison of Coefficients

Coef. Fr Wing t50 Fr Inner Fender Mod Difference Difference % Remarks
Cd 0.5504 0.5505 +0.0001481 +0.03
Cl -0.1521 -0.1532 -0.001123 -0.74
Clf 0.04254 0.03637 -0.006172 -14.5 Decrease of Front Lift
Clr -0.1946 -0.1896 +0.005049 +2.59
L/D -0.2763 -0.2783 -0.001966 -0.71

Front Inner Fender Mod ( Body and Wheels )

forces forces00 output:
sum of forces:
pressure : (189.580037039 -204.933743656 -58.2637985447)
viscous : (17.0298975248 -1.24372855807 0.769443868483)
porous : (0 0 0)
sum of moments:
pressure : (77.2314498502 103.26330981 71.9570980057)
viscous : (-0.0543080587078 9.08320907986 11.1233349754)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.112964762325
Cd = 0.550529311581
Cl = -0.153198477927
Cl(f) = 0.036365523362
Cl(r) = -0.189564001289

Front Inner Fender Mod ( Body Only )

forceCoeffs forceCoeffs02 output:
Cm = 0.0965927955669
Cd = 0.427129689867
Cl = -0.190826642612
Cl(f) = 0.00117947426075
Cl(r) = -0.192006116873
y-yosuke commented 8 years ago

Front Wheel Deflector Comparison (Pressure) fp-023b_cfd_fr-wheel-deflector_pressure_front-left fp-023b_cfd_fr-wheel-deflector_pressure_front-left-bottom fp-023b_cfd_fr-wheel-deflector_pressure_bottom

Flow Comparison Movie / YouTube - fp-023b CFD Fr Wheel Deflector Flow Comparison https://youtu.be/zLlQrzB8BFE

Z=250 p025

Z=300 p030

z=350 p035

y-yosuke commented 8 years ago

Front Flap X+20mm / Front Inner Fender Mod - Comparison of the Coefficients

Coef. Fr Inner Fender Mod Fr Flap X+20mm Difference Difference % Remarks
Cd 0.5505 0.5498 -0.00075 -0.1
Cl -0.1532 -0.1584 -0.00516 -3.4
Clf 0.0364 0.0328 -0.00361 -9.9 Decrease of Front Lift
Clr -0.1896 -0.1911 -0.00155 -0.8
L/D -0.2783 -0.2880 -0.00976 -3.5

Front Flap X+20mm ( Body and Wheels )

forces forces00 output:
sum of forces:
pressure : (189.33847189 -204.913521305 -60.2199552802)
viscous : (16.9889822007 -1.2425152002 0.789462061483)
porous : (0 0 0)
sum of moments:
pressure : (77.7862859129 102.210286853 71.9045489003)
viscous : (-0.0640127848378 9.10827928075 11.1042425864)
porous : (0 0 0)
forceCoeffs forceCoeffs01 output:
Cm = 0.11193115274
Cd = 0.549776618926
Cl = -0.158357479701
Cl(f) = 0.03275241289
Cl(r) = -0.191109892591

Front Flap X+20mm ( Body Only )

forceCoeffs forceCoeffs02 output:
Cm = 0.0952697798186
Cd = 0.427050086611
Cl = -0.196042454307
Cl(f) = -0.00275144733478
Cl(r) = -0.193291006972
y-yosuke commented 8 years ago

Fr Flap X+20mm +7.5deg / Fr Flap X+20mm - Coefficient Comparison

Body and Wheels

Coef. Fr Flap X+20mm Fr Flap X+20mm +7.5deg Difference Difference % Remarks
Cm 0.1119 0.0893 -0.02267 -20.3
Cd 0.5498 0.5627 +0.01295 +2.4
Cl -0.1584 -0.1667 -0.00839 -5.3
Clf 0.0328 0.0059 -0.02686 -82.0
Clr -0.1911 -0.1726 +0.01847 +9.7
CoP -0.2068 -0.0353 +0.17149 +17.1
L/D -0.2880 -0.2963 -0.00828 -2.9

Body Only

Coef. Fr Flap X+20mm Fr Flap X+20mm +7.5deg Difference Difference % Remarks
Cm 0.0953 0.0721 -0.0232 -24.4
Cd 0.4271 0.4415 +0.0145 +3.4
Cl -0.1960 -0.2071 -0.0111 +5.6
Clf -0.0028 -0.0315 -0.0287 -1044.5
Clr -0.1933 -0.1756 +0.0177 +9.2
CoP 0.9860 0.8479 -0.1380 -13.8
L/D -0.4591 -0.4690 -0.0100 -3.5

Fr Flap X+20mm +7.5deg

forces forces00 output:
sum of forces:
pressure : (194.287769677 -204.411221418 -63.366796775)
viscous : (16.8987201385 -1.2097275827 0.788556780312)
porous : (0 0 0)
sum of moments:
pressure : (78.8570279867 79.6996363184 82.2075657069)
viscous : (-0.0746135936295 9.0768362904 11.0095213134)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0720553028498
Cd = 0.441546553716
Cl = -0.20709253757
Cl(f) = -0.0314909659351
Cl(r) = -0.175601571635
forceCoeffs forceCoeffs01 output:
Cm = 0.089265009966
Cd = 0.562723922735
Cl = -0.166744912131
Cl(f) = 0.00589255390038
Cl(r) = -0.172637466032
y-yosuke commented 8 years ago

Fr Flap X+20mm +7.5deg +S-Duct / Fr Flap X+20mm +7.5deg - Coefficient Comparison

Body and Wheels

Coef. Fr Flap X+20mm +7.5deg +S-Duct Difference Difference % Remarks
Cm 0.0893 0.0781 -0.0112 -12.5
Cd 0.5627 0.5590 -0.0037 -0.7
Cl -0.1667 -0.1693 -0.0025 -1.5
Clf 0.0059 -0.0066 -0.0124 -211.2
Clr -0.1726 -0.1627 +0.0099 +5.8
CoP 1.0353 0.9613 -0.0740 -7.4
L/D -0.2963 -0.3028 -0.0065 -2.2

Body Only

Coef. Fr Flap X+20mm +7.5deg +S-Duct Difference Difference % Remarks
Cm 0.0721 0.0610 -0.0111 -15.4
Cd 0.4415 0.4385 -0.0031 -0.7
Cl -0.2071 -0.2099 -0.0028 -1.4
Clf -0.0315 -0.0440 -0.0125 -39.7
Clr -0.1756 -0.1659 +0.0097 +5.5
CoP 0.8479 0.7904 -0.0575 -5.8
L/D -0.4690 -0.4787 -0.0097 -2.1

Fr Flap X+20mm +7.5deg +S-Duct

forces forces00 output:
sum of forces:
pressure : (192.923177216 -211.820065744 -64.4592062192)
viscous : (16.8628329347 -1.15765110863 0.940318972417)
porous : (0 0 0)
sum of moments:
pressure : (83.0613335105 68.4366257577 86.7031670791)
viscous : (-0.119336033146 9.21070084541 10.9881972169)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0609544151009
Cd = 0.438450781228
Cl = -0.209890358132
Cl(f) = -0.0439907639652
Cl(r) = -0.165899594167
forceCoeffs forceCoeffs01 output:
Cm = 0.0780746202162
Cd = 0.558992228478
Cl = -0.169251344773
Cl(f) = -0.00655105217037
Cl(r) = -0.162700292603
y-yosuke commented 8 years ago

Ride Height Fr.90-Rr.110 / Fr.110-Rr.110 - Coefficient Comparison

Body and Wheels

Coef. RH 110-110 RH 90-110 Difference Difference % Remarks
Cm 0.0781 0.0515 -0.0266 -34.1
Cd 0.5590 0.5569 -0.0021 -0.4
Cl -0.1693 -0.2246 -0.0553 -32.7
Clf -0.0066 -0.0608 -0.0543 -828.7
Clr -0.1627 -0.1638 -0.0011 -0.6
CoP 0.9613 0.7291 -0.2322 -23.2
L/D -0.3028 -0.4033 -0.1005 -33.2

Body Only

Coef. RH 110-110 RH 90-110 Difference Difference % Remarks
Cm 0.0610 0.0353 -0.0257 -42.1
Cd 0.4385 0.4355 -0.0029 -0.7
Cl -0.2099 -0.2606 -0.0508 -24.2
Clf -0.0440 -0.0950 -0.0510 -116.0
Clr -0.1659 -0.1656 +0.0003 +0.2
CoP 0.7904 0.6354 -0.1550 -15.5
L/D -0.4787 -0.5984 -0.1197 -39.5

Ride Height Fr.90-Rr.110 - Model : Fr Flap X+20mm +7.5deg +S-Duct

forces forces00 output:
sum of forces:
pressure : (192.136865536 -212.67478765 -85.2805725486)
viscous : (16.8523774112 -1.14284982201 0.991780807185)
porous : (0 0 0)
sum of moments:
pressure : (88.9834002883 42.1686183062 84.9206443405)
viscous : (-0.160189776081 9.00476534478 11.0198797034)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0352983977412
Cd = 0.435542653289
Cl = -0.260641145154
Cl(f) = -0.0950221748355
Cl(r) = -0.165618970318
forceCoeffs forceCoeffs01 output:
Cm = 0.0514549910282
Cd = 0.556869176164
Cl = -0.224594478428
Cl(f) = -0.060842248186
Cl(r) = -0.163752230242
y-yosuke commented 8 years ago

Fr Flap X+20mm +7.5deg +S-Duct / U Magnitude

Slice Y=-520mm Front Wing - Fender

fp-023b_cfd_slicey520mm_fr-wing-fender

Slice Y=-480mm Front Wing - Fender fp-023b_cfd_slicey480mm_fr-wing-fender

Slice Y=-520mm Rear Wing - Bumper fp-023b_cfd_slicey520mm_rr-wing-bumper

Slice Y=-5mm Rear Wing - Diffuser fp-023b_cfd_slicey005mm_rr-wing-diffuser

y-yosuke commented 8 years ago

CAD models (STP) for SimScale SImulations merged. https://github.com/y-yosuke/formula-ppoino/pull/13

y-yosuke commented 8 years ago

I copied the simulations as a new control set "fp-023c - Control" including the 2 simulations of fp-023b below.

https://www.simscale.com/workbench/?pid=4335181504650554040#tab_0-0

y-yosuke commented 8 years ago

And I copied "fp-023c - Control" to "fp-023c - Front Aero Devices". https://www.simscale.com/workbench/?pid=3781955060523638359#tab_0-0

y-yosuke commented 8 years ago

Front Wing - Curved Center Z-40mm / fp-023c - Control - Coefficient Comparison

Body and Wheels

Coef. fp-023c Control Fr Wing Curved Difference Difference % Remarks
Cm 0.0781 0.0767 -0.0013 -1.7
Cd 0.5590 0.5601 +0.0011 +0.2
Cl -0.1693 -0.1694 -0.0002 -0.1
Clf -0.0066 -0.0080 -0.0014 -21.9
Clr -0.1627 -0.1614 +0.0013 +0.8
CoP 0.9613 0.9529 -0.0084 -0.8
L/D -0.3028 -0.3025 +0.0003 +0.1

Body Only

Coef. fp-023c Control Fr Wing Curved Difference Difference % Remarks
Cm 0.0610 0.0595 -0.0015 -2.4
Cd 0.4385 0.4396 +0.0011 +0.3
Cl -0.2099 -0.2098 +0.0001 +0.0
Clf -0.0440 -0.0455 -0.0015 -3.3
Clr -0.1659 -0.1644 +0.0015 +0.9
CoP 0.7904 0.7834 -0.0070 -0.7
L/D -0.4787 -0.4774 +0.0013 -0.3

Front Wing - Curved Center Z-40mm (N=800)

forces forces00 output:
sum of forces:
pressure : (193.295707982 -216.609864699 -64.5120802851)
viscous : (16.8968259054 -1.1623234105 0.927222740564)
porous : (0 0 0)
sum of moments:
pressure : (84.2035587933 67.0929758661 96.3359169077)
viscous : (-0.115654621525 9.21389127566 11.0054446366)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0594653355883
Cd = 0.43956071359
Cl = -0.20983894872
Cl(f) = -0.0454541387718
Cl(r) = -0.164384809948
forceCoeffs forceCoeffs01 output:
Cm = 0.0767267841999
Cd = 0.560075444702
Cl = -0.169427128105
Cl(f) = -0.00798677985241
Cl(r) = -0.161440348252

Front Wing - Curved Center Z-40mm / Screen Shot 2016-08-09 0 10 37

y-yosuke commented 8 years ago

Front Fender Louver / fp-023c Control - Coefficient Comparison

Body and Wheels

Coef. fp-023c Control Fr Fender Louver Difference Difference % Remarks
Cm 0.0781 0.0696 -0.0085 -10.8
Cd 0.5590 0.5619 +0.0029 +0.5
Cl -0.1693 -0.1805 -0.0112 -6.6
Clf -0.0066 -0.0206 -0.0141 -214.7
Clr -0.1627 -0.1599 +0.0028 +1.8
CoP 0.9613 0.8858 -0.0755 -7.6
L/D -0.3028 -0.3212 -0.0184 -6.1

Body Only

Coef. fp-023c Control Fr Fender Louver Difference Difference % Remarks
Cm 0.0610 0.0512 -0.0097 -16.0
Cd 0.4385 0.4430 +0.0045 +1.0
Cl -0.2099 -0.2242 -0.0143 -6.8
Clf -0.0440 -0.0609 -0.0169 -38.4
Clr -0.1659 -0.1633 +0.0026 +1.6
CoP 0.7904 0.7285 -0.0619 -6.2
L/D -0.4787 -0.5060 -0.0273 -5.7

Front Fender Louver (N=800)

forces forces00 output:
sum of forces:
pressure : (194.021035364 -214.194593019 -68.69904829)
viscous : (16.8682687652 -1.13925669691 0.970496265636)
porous : (0 0 0)
sum of moments:
pressure : (86.4583824343 59.9632167236 89.7150662382)
viscous : (-0.162704736168 9.27297690372 11.0187434161)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0512147526915
Cd = 0.442997031299
Cl = -0.224164879662
Cl(f) = -0.0608676871393
Cl(r) = -0.163297192522
forceCoeffs forceCoeffs01 output:
Cm = 0.069617200735
Cd = 0.561932046816
Cl = -0.180468345818
Cl(f) = -0.0206169721743
Cl(r) = -0.159851373644

Front Fender Louver / Screen Shot Images 2016-08-09 20 04 20 2016-08-09 20 05 18

y-yosuke commented 8 years ago

Front Fender Louver - Stream fp-023c_cfd_fr-fender-louver_01 fp-023c_cfd_fr-fender-louver_02 fp-023c_cfd_fr-fender-louver_03 fp-023c_cfd_fr-fender-louver_04 fp-023c_cfd_fr-fender-louver_05

y-yosuke commented 8 years ago

Front Fender Louver / fp-023c Control - Pressure Comparison fp-023c_cfd_fr-fender-louver_p01 fp-023c_cfd_fr-fender-louver_p02

y-yosuke commented 8 years ago

Front Fender Louver / fp-023c Control - U Magnitude Comparison Slice Y=-800mm fp-023c_cfd_fr-fender-louver_u01 fp-023c_cfd_fr-fender-louver_u02

y-yosuke commented 8 years ago

Front Fender Louver B / fp-023c Control - Coefficient Comparison

Body and Wheels

Coef. fp-023c Control Fr Fender Louver B Difference Difference % Remarks
Cm 0.0781 0.0611 -0.0169 -21.7
Cd 0.5590 0.5636 +0.0046 +0.8
Cl -0.1693 -0.1930 -0.0237 -14.0
Clf -0.0066 -0.0354 -0.0288 -439.7
Clr -0.1627 -0.1576 +0.0051 +3.1
CoP 0.9613 0.8168 -0.1445 -14.4
L/D -0.3028 -0.3424 -0.0397 -13.1

Body Only

Coef. fp-023c Control Fr Fender Louver B Difference Difference % Remarks
Cm 0.0610 0.0417 -0.0193 -31.6
Cd 0.4385 0.4445 +0.0061 +1.4
Cl -0.2099 -0.2416 -0.0317 -15.1
Clf -0.0440 -0.0791 -0.0351 -79.8
Clr -0.1659 -0.1625 +0.0034 +2.1
CoP 0.7904 0.6726 -0.1179 -11.8
L/D -0.4787 -0.5434 -0.0647 -13.5

Front Fender Louver B (N=800)

forces forces00 output:
sum of forces:
pressure : (194.532736763 -215.087078872 -73.4640487952)
viscous : (16.9690734028 -1.110422533 1.03726612724)
porous : (0 0 0)
sum of moments:
pressure : (89.5275518637 51.3640488125 90.3860205617)
viscous : (-0.239180640785 9.44157798426 11.1084927904)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0416830547389
Cd = 0.444519459948
Cl = -0.241557483711
Cl(f) = -0.0790956871165
Cl(r) = -0.162461796594
forceCoeffs forceCoeffs01 output:
Cm = 0.0611402404545
Cd = 0.563564119966
Cl = -0.192987171147
Cl(f) = -0.0353533451189
Cl(r) = -0.157633826028
y-yosuke commented 8 years ago

Front Fender Louver B - Stream fp-023c_cfd_fr-fender-louver-b_stream-01 fp-023c_cfd_fr-fender-louver-b_stream-02 fp-023c_cfd_fr-fender-louver-b_stream-03 fp-023c_cfd_fr-fender-louver-b_stream-04 fp-023c_cfd_fr-fender-louver-b_stream-05

y-yosuke commented 8 years ago

Front Fender Louver B / Front Fender Louver - U Magnitude Comparison Slice Y=-800mm fp-023c_cfd_fr-fender-louver-b_u-01 fp-023c_cfd_fr-fender-louver-b_u-02 fp-023c_cfd_fr-fender-louver-b_u-03

y-yosuke commented 8 years ago

Side Deflector Horizontal Fin / fp-023c Control - Coefficient Comparison

Body and Wheels

Coef. fp-023c Control Side Deflector Horizontal Fin Difference Difference % Remarks
Cm 0.0781 0.0774 -0.0007 -0.9
Cd 0.5590 0.5591 +0.0002 +0.0
Cl -0.1693 -0.1635 +0.0058 +3.4
Clf -0.0066 -0.0044 +0.0022 +33.3
Clr -0.1627 -0.1591 +0.0036 +2.2
CoP 0.9613 0.9733 +0.0120 +1.2
L/D -0.3028 -0.2924 +0.0104 +3.4

Body Only

Coef. fp-023c Control Side Deflector Horizontal Fin Difference Difference % Remarks
Cm 0.0610 0.0602 -0.0007 -1.2
Cd 0.4385 0.4388 +0.0003 +0.1
Cl -0.2099 -0.2040 +0.0059 +2.8
Clf -0.0440 -0.0418 +0.0022 +5.1
Clr -0.1659 -0.1622 +0.0037 +2.2
CoP 0.7904 0.7953 +0.0049 +0.5
L/D -0.4787 -0.4649 +0.0139 +2.9

Side Deflector Horizontal Fin (N=800)

sum of forces:
pressure : (193.011500949 -212.398774663 -62.3090653332)
viscous : (16.8317065679 -1.15672433652 0.95089953385)
porous : (0 0 0)
sum of moments:
pressure : (82.4359042821 67.7409744611 86.6595971474)
viscous : (-0.126342491785 9.21163333138 10.977742944)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0602250520072
Cd = 0.438761514847
Cl = -0.203959915919
Cl(f) = -0.0417549059522
Cl(r) = -0.162205009967
forceCoeffs forceCoeffs01 output:
Cm = 0.0773760783646
Cd = 0.559144635606
Cl = -0.163493923217
Cl(f) = -0.00437088324386
Cl(r) = -0.159123039973

Side Deflector Horizontal Fin - Screenshot 2016-08-11 22 35 09

y-yosuke commented 8 years ago

Front Fender Stay - Oval Tubes / fp-023c Control - Coefficient Comparison

Body and Wheels

Coef. fp-023c Control Fr Fender Stay Oval Tubes Difference DIfference % Remarks
Cm 0.0781 0.0610 -0.0171 -21.9
Cd 0.5590 0.5618 +0.0028 +0.5
Cl -0.1693 -0.1863 -0.0171 -10.1
Clf -0.0066 -0.0322 -0.0256 -390.9
Clr -0.1627 -0.1542 +0.0085 +5.2
CoP 0.9613 0.8274 -0.1339 -13.4
L/D -0.3028 -0.3317 -0.0289 -9.5

Body Only

Coef. fp-023c Control Fr Fender Stay Oval Tubes Difference DIfference % Remarks
Cm 0.0610 0.0427 -0.0182 -23.4
Cd 0.4385 0.4383 -0.0002 -0.0
Cl -0.2099 -0.2282 -0.0183 -10.8
Clf -0.0440 -0.0714 -0.0274 -418.0
Clr -0.1659 -0.1568 +0.0091 +5.6
CoP 0.7904 0.6872 -0.1032 -10.3
L/D -0.4787 -0.5207 -0.0419 -13.9

Front Fender Stay - Oval Tubes (N=800)

forces forces00 output:
sum of forces:
pressure : (193.649226627 -210.202765234 -70.8970706796)
viscous : (17.1899953126 -1.1455631634 0.969600241677)
porous : (0 0 0)
sum of moments:
pressure : (85.0441004847 51.1963729643 87.1669189999)
viscous : (-0.145510507786 9.47187425525 11.2323450111)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0427221987438
Cd = 0.438281152289
Cl = -0.228192102307
Cl(f) = -0.0713738524094
Cl(r) = -0.156818249897
forceCoeffs forceCoeffs01 output:
Cm = 0.0610021048768
Cd = 0.561798598669
Cl = -0.18632754636
Cl(f) = -0.0321616683031
Cl(r) = -0.154165878057
y-yosuke commented 8 years ago

Front Fender Stay - Oval Tubes / fp-023c Control - Radiator Flow Comparison

fp-023c Control Front Fender Stay - Oval Tubes Difference Difference %
0.261347 0.261297 -0.00005 -0.0191
y-yosuke commented 8 years ago

Front Fender Stay - Oval Tubes / fp-023c Control - U Magnitude Comparison

Slice at Y=-520mm fp-023c_fr-fender-stay_u-mag-comparizon_ym520

Slice at Y=-480mm fp-023c_fr-fender-stay_u-mag-comparizon_ym480

y-yosuke commented 8 years ago

Front Fender Stay - Oval Tubes / fp-023c Control - Pressure Comparison

Top View fp-023c_fr-fender-stay_p-comparizon-01

Bottom View fp-023c_fr-fender-stay_p-comparizon-02

y-yosuke commented 8 years ago

Front Fender Louver C / fp-023c Control - Coefficients Comparison

Body and Wheels

Coef. fp-023c Control Fr Fender Louver C Difference Difference % Remarks
Cm 0.0781 0.0600 -0.0181 -23.2
Cd 0.5590 0.5619 +0.0029 +0.5
Cl -0.1693 -0.1964 -0.0272 -16.1
Clf -0.0066 -0.0383 -0.0317 -484.0
Clr -0.1627 -0.1582 +0.0045 +2.8
CoP 0.9613 0.8052 -0.1561 -15.6
L/D -0.3028 -0.3496 -0.0468 -15.5

Body Only

Coef. fp-023c Control Fr Fender Louver C Difference Difference % Remarks
Cm 0.0610 0.0406 -0.0204 -33.4
Cd 0.4385 0.4418 +0.0034 +0.8
Cl -0.2099 -0.2450 -0.0352 -16.7
Clf -0.0440 -0.0819 -0.0379 -86.2
Clr -0.1659 -0.1631 +0.0028 +1.7
CoP 0.7904 0.6657 -0.1248 -12.5
L/D -0.4787 -0.5546 -0.0759 -15.9

Front Fender Louver C (N=800)

forces forces00 output:
sum of forces:
pressure : (193.875186619 -214.394665042 -74.7656912625)
viscous : (17.0017619285 -1.1140030723 1.04887777003)
porous : (0 0 0)
sum of moments:
pressure : (89.7795619357 50.1460815154 88.9309315126)
viscous : (-0.246416708209 9.48239117966 11.1286579846)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0405929409229
Cd = 0.441827142069
Cl = -0.245043661117
Cl(f) = -0.0819288896357
Cl(r) = -0.163114771482
forceCoeffs forceCoeffs01 output:
Cm = 0.0599566084681
Cd = 0.561899124345
Cl = -0.196424565303
Cl(f) = -0.0382556741835
Cl(r) = -0.15816889112
y-yosuke commented 8 years ago

Front Fender Louver C / Front Fender Louver B - Coefficients Comparison

Body and Wheels

Coef. Fr Fender Louver B Fr Fender Louver C Difference Difference % Remarks
Cm 0.0611 0.0600 -0.0012 -1.9
Cd 0.5636 0.5619 -0.0017 -0.3
Cl -0.1930 -0.1964 -0.0034 -1.8
Clf -0.0354 -0.0383 -0.0029 -8.2
Clr -0.1576 -0.1582 -0.0005 -0.3
CoP 0.8168 0.8052 -0.0116 -1.2
L/D -0.3424 -0.3496 -0.0071 -2.1

Body Only

Coef. Fr Fender Louver B Fr Fender Louver C Difference Difference % Remarks
Cm 0.0417 0.0406 -0.0011 -2.6
Cd 0.4445 0.4418 -0.0027 -0.6
Cl -0.2416 -0.2450 -0.0035 -1.4
Clf -0.0791 -0.0819 -0.0028 -3.6
Clr -0.1625 -0.1631 -0.0007 -0.4
CoP 0.6726 0.6657 -0.0069 -0.7
L/D -0.5434 -0.5546 -0.0112 -2.1
y-yosuke commented 8 years ago

Front Fender Louver C - Stream Lines fp-023c_cfd_fr-fender-louver-c_st01 fp-023c_cfd_fr-fender-louver-c_st02 fp-023c_cfd_fr-fender-louver-c_st03 fp-023c_cfd_fr-fender-louver-c_st04

y-yosuke commented 8 years ago

Front Fender Louver C / Front Fender Louver B - U Magnitude Comparison Slice Y=-800mm

fp-023c_cfd_fr-fender-louver-c_um-sl-01 fp-023c_cfd_fr-fender-louver-c_um-sl-02 fp-023c_cfd_fr-fender-louver-c_um-sl-03

y-yosuke commented 8 years ago

Front Fender Stay - Louver / Front Fender Stay - Oval Tubes - Coefficients Comparison

Body and Wheels

Coef. Fr Fender Stay Oval Tubes Fr Fender Stay Louver Difference Difference % Remarks
Cm 0.0610 0.0580 -0.0030 -4.9
Cd 0.5618 0.5594 -0.0024 -0.4
Cl -0.1863 -0.1856 +0.0007 +0.4
Clf -0.0322 -0.0348 -0.0026 -8.1
Clr -0.1542 -0.1509 +0.0033 +2.1
CoP 0.8274 0.8127 -0.0147 -1.5
L/D -0.3317 -0.3318 -0.0002 -0.1

Body Only

Coef. Fr Fender Stay Oval Tubes Fr Fender Stay Louver Difference Difference % Remarks
Cm 0.0427 0.0397 -0.0030 -7.0
Cd 0.4383 0.4356 -0.0026 -0.6
Cl -0.2282 -0.2277 +0.0005 +0.2
Clf -0.0714 -0.0741 -0.0027 -3.8
Clr -0.1568 -0.1536 +0.0032 +2.1
CoP 0.6872 0.6745 -0.0127 -1.3
L/D -0.5207 -0.5227 -0.0020 -0.4

Front Fender Stay - Louver (N=800)

forces forces00 output:
sum of forces:
pressure : (192.714722469 -210.375137255 -70.6778526831)
viscous : (17.2210410795 -1.13160215297 1.01327146706)
porous : (0 0 0)
sum of moments:
pressure : (84.8857770561 48.195850274 87.1555366599)
viscous : (-0.176885109583 9.52780223589 11.2610665916)
porous : (0 0 0)
forceCoeffs forceCoeffs02 output:
Cm = 0.0397333872166
Cd = 0.435638416412
Cl = -0.227708888569
Cl(f) = -0.0741210570678
Cl(r) = -0.153587831501
forceCoeffs forceCoeffs01 output:
Cm = 0.0580413060483
Cd = 0.559391258832
Cl = -0.185627056218
Cl(f) = -0.0347722220607
Cl(r) = -0.150854834157
y-yosuke commented 8 years ago

Front Fender Stay - Louver / Front Fender Stay - Oval Tubes - U Magnitude Comparison

Slice at Y=-520mm fp-023c_cfd_fr-fender-stay-louver_um-y520-01

Front Fender Stay - Louver / Front Fender Stay - Oval Tubes - Vector Comparison

Slice at Y=-520mm fp-023c_cfd_fr-fender-stay-louver_vt-y520-01