search

UNH-CORE / RM2-CACTUS

Modeling the DOE/Sandia RM2 cross-flow turbine with CACTUS.
MIT License
0 stars 0 forks source link

Try XFOIL for low Re 0018 data #38

Closed petebachant closed 8 years ago

petebachant commented 8 years ago

Though the results at Re = 1.5e6 show XFOIL to do a poor job for the 0021, if it does better than Sheldahl at matching the Jacobs data for the 0018, there may be some justification for its use for generating low Re 0021 coefficients.

nearyvs commented 8 years ago

Why are we comparing with 0018 foil Jacobs?

Sent from my iPad

On Jun 16, 2016, at 5:54 PM, Pete Bachant notifications@github.com wrote:

Though the results at Re = 1.5e6 show XFOIL to do a poor job for the 0021, if it does better than Sheldahl at matching the Jacobs data for the 0018, there may be some justification for its use for generating low Re 0021 coefficients.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

petebachant commented 8 years ago

Since I can't find any 0021 data at the Reynolds numbers of interest (~1e5), and XFOIL has already failed in the stalled regime at Re ~ 1e6, the thought was that we could validate against a profile that is kind of similar. It's probably going to fail just the same, but it was just a thought.

petebachant commented 8 years ago

Actually, there is lift coefficient data in Jacobs (1932), which I'm going to manually digitize and compare with Sheldahl.

petebachant commented 8 years ago

Going to close this and generate some XFOIL data at low Re for the 0021.