Ahmed Bluff Body CFD Validation
The purpose of this repo is to serve as a starting point for further automotive/motorsport CFD or as a resource for CFD code validation. The Ahmed bluff body geometry is included so anyone can use it in their simulations. If you would like to add a validation case, please open a pull request and I'll add it! Thanks!
Current results
case_id |
case directory |
decklid angle |
solver |
turbulence model |
cd |
cd error |
cl |
cl error |
1-A |
openfoam_rans |
25 |
simpleFoam |
RAS - kOmegaSST |
0.299 |
0.000 |
0.339 |
-0.006 |
1-B |
openfoam_rans |
35 |
simpleFoam |
RAS - kOmegaSST |
|
|
|
|
2-A |
openfoam_les |
25 |
pisoFoam |
LES - SpalartAllmarasDDES |
|
|
|
|
2-B |
openfoam_les |
35 |
pisoFoam |
LES - SpalartAllmarasDDES |
|
|
|
|
- c_d and c_l values are calculated by averaging the last 50 time steps for rans case
Mesh properties by case |
case_id |
cell count |
y+ min |
y+ max |
y+ mean |
snappyHexMeshDict |
1-A |
8,250,693 |
0.313 |
340.130 |
13.244 |
snappyHexMeshDict_1A |
1-B |
|
|
|
|
snappyHexMeshDict_1B |
2-A |
|
|
|
|
snappyHexMeshDict_2A |
2-B |
|
|
|
|
snappyHexMeshDict_2B |
- y+ values are for ahmed-body only
Existing results
type |
decklid angle |
cd |
cl |
solver |
source |
exp |
25 |
0.299 |
0.345 |
--- |
link |
cfd |
0.300 |
0.316 |
simpleFoam |
0.266 |
0.325 |
0.274 |
0.330 |
0.250 |
0.306 |
0.260 |
0.305 |
0.301 |
0.307 |
exp |
35
| 0.279 |
0.004 |
--- |
cfd |
0.313 |
0.212 |
simpleFoam |
0.292 |
0.156 |
0.247 |
0.159 |
cfd |
20 |
0.262 |
0.284 |
Ansys Fluent |
link |
30 |
0.298 |
0.348 |
35 |
0.295 |
0.206 |
40 |
0.250 |
0.008 |