Openfoam different dimension error for hypersonic plane

HyperSonic1 · January 26, 2025, 21:17

Hi, I am very new to using any CFD; in fact, I am a highschooler. I am designing a plane that goes Mach 17, has 2 nuclear reactors for thrust, etc. My problem is that openFOAM gives me an error (attached picture).

Névtelen.png

my files if somebody wants to look at them:
https://files.fm/u/tjhckkah3z

I made some .sh files since I am working in Ubuntu to make my life easier.
I use Rhopimplefoam with Openfoam11. (with turbulance) If you need more information, just message me or write it here. Thanks in advance, you wonderful people!

Alczem · January 28, 2025, 07:45

Hey!

Mach 17? Holy.

The error indicates a dimension problem in your boundary files. My guess is that you used an incompressible case as a starting point. Check the dimensions for nut and alphat (near the header of the files). Change it according to the log message.

HyperSonic1 · January 30, 2025, 12:27

Alphat and nut are the same; I set the dimensions correct from what I can tell, but I provided my project folder so you can check it if I'm wrong.

Alczem · January 31, 2025, 04:06

Hey!

alphat and nut are indeed the same (I had checked your case before answering) but they are both wrong

their dimensions should be set to [1 -1 -1 0 0 0 0 ] according to the error message. See if your case runs after changing it.

HyperSonic1 · January 31, 2025, 22:34

I changed both to 1 -1 -1, now it outputs this error, basically the same the dimensions are just flipped
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.png

January 26, 2025, 21:17	Openfoam different dimension error for hypersonic plane	#1
HyperSonic1 New Member Bábel Edvárd István Join Date: Jan 2025 Location: Hungary Posts: 3 Rep Power: 2	Hi, I am very new to using any CFD; in fact, I am a highschooler. I am designing a plane that goes Mach 17, has 2 nuclear reactors for thrust, etc. My problem is that openFOAM gives me an error (attached picture). Névtelen.png my files if somebody wants to look at them: https://files.fm/u/tjhckkah3z I made some .sh files since I am working in Ubuntu to make my life easier. I use Rhopimplefoam with Openfoam11. (with turbulance) If you need more information, just message me or write it here. Thanks in advance, you wonderful people! Last edited by HyperSonic1; January 27, 2025 at 15:08.

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January 28, 2025, 07:45		#2
Alczem Senior Member Join Date: Dec 2021 Posts: 277 Rep Power: 6	Hey! Mach 17? Holy. The error indicates a dimension problem in your boundary files. My guess is that you used an incompressible case as a starting point. Check the dimensions for nut and alphat (near the header of the files). Change it according to the log message.

January 30, 2025, 12:27		#3
HyperSonic1 New Member Bábel Edvárd István Join Date: Jan 2025 Location: Hungary Posts: 3 Rep Power: 2	Alphat and nut are the same; I set the dimensions correct from what I can tell, but I provided my project folder so you can check it if I'm wrong.

January 31, 2025, 04:06		#4
Alczem Senior Member Join Date: Dec 2021 Posts: 277 Rep Power: 6	Hey! alphat and nut are indeed the same (I had checked your case before answering) but they are both wrong their dimensions should be set to [1 -1 -1 0 0 0 0 ] according to the error message. See if your case runs after changing it.

January 31, 2025, 22:34		#5
HyperSonic1 New Member Bábel Edvárd István Join Date: Jan 2025 Location: Hungary Posts: 3 Rep Power: 2	I changed both to 1 -1 -1, now it outputs this error, basically the same the dimensions are just flipped aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.png