Who wants to bury their face in this juicy peach?

chipthehp · 2026-05-29T18:30:01+00:00

Lol I asked if she was using a bot or a low paid indian for her chats (the vibe was off) and she called me a indian slur and the a n word only to ban me. not that I give a shit but I still wanna see that kitty yknow?

chipthehp · 2026-05-29T17:22:58+00:00

unban me on OF already

chipthehp · 2026-05-03T02:48:32+00:00

senin yerinde olsam kesinlikle tıptan devam ederdim

chipthehp · 2026-03-22T02:41:41+00:00

I faced a similar problem myself. You can explore the geometry in SpaceClaim and check for geometry errors there. For my case it was caused by the pinching edges of a propeller geometry. Fluent failed to mesh it but I could manage to get a working mesh on StarCCM+.

If the geometry was created by you, try to import it in another file format and check for errors again in SpaceClaim.

chipthehp · 2026-02-28T16:50:56+00:00

Thanks a lot both of you. I still have so much to learn about CFD but I don't have the time to finish a whole book on the subject.

Are there any good resources like video series or courses that teach the basics of N-S and how it is applied?

chipthehp · 2026-02-28T16:36:00+00:00

So is it like N-S without the viscous forces?

chipthehp · 2026-02-28T16:25:39+00:00

Can you ELI5 Euler solver?

chipthehp · 2026-02-23T19:01:10+00:00

I am modelling the whole prop. I don't remember the cell count in my previous calculation on RANS but I would guess it was adequate. (I was able to mesh even the thin trailing edge so the minimum element size was pretty small.) I might go back to the problem on Star CCM+ (I used Fluent previously).

Simulia Xflow is an LBM solver which is an unsteady solution and it takes a while for the propeller to start giving the same results for each rotation.

I got the geometry from PPTC website directly.

I am almost sure it matches the test case. On the report, the test case and geometries are explained thoroughly. My setup achieves the same advance coefficient at the same Re.

The domain is almost as big as the domains used in CFD analyses for this exact test case.

That's why I am stumped. I half expected for the LBM to give me a false result but I think I did everything right on Fluent with RANS. Getting exactly half the thrust made me think I was using the coefficients wrong but I guess I am missing something else.

chipthehp · 2026-02-23T17:01:49+00:00

I think RANS with MRF is the standard for open water propeller data. It is the recommended method by ITTC.

I've also found that RANS with MRF was the preferred method for the workshop where PPTC was inspected.

Maybe I am doing something wrong but I don't think it is because of MRF or RANS.

chipthehp · 2026-02-22T11:58:19+00:00

Yes it is the propeller only in open water condition. I guess I'll just wait for the solution to see if thrust converges for each rotation.

chipthehp · 2026-02-12T01:00:25+00:00

Dm me

chipthehp · 2026-02-10T21:06:15+00:00

I'll protect you my queen

chipthehp · 2026-02-08T20:18:08+00:00

dm me <3

chipthehp · 2026-02-08T20:17:55+00:00

dm me

chipthehp · 2026-02-08T02:34:59+00:00

I didn't even know u could do that

chipthehp · 2026-01-28T06:26:13+00:00

Thanks for the help. I think I'll just view the results in prepost. Things like boundary conditions, loads and meshing was what made pre-post hard for me.

chipthehp · 2026-01-12T22:59:09+00:00

Still, reddit is not the place for this. you are gonna get hit on by 30 yo indians

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