NEMO - SU2 NONEQ with 3D-grid (Euler or Navier Stokes) doesn't start

MBrandt · June 28, 2021, 08:04

Hello my friends I´m new here and my research area are hypersonic waverider geometries. I´m intersting to do some simulations with NEMO-Navier_Stokes und der Air-5 library, but when I start my simulation it ends at the point "NO Jacobian structure" and the calculation doesn't start ... (please refer picture)
Is the NEMO-Solver actually not yet suitable for 3D grids (in my appendix is the config-File)?
Thank you for your answers.

Best
Maximilian

wallym · June 28, 2021, 14:09

Hi Maximilian,

Thanks for using NEMO! and thanks for your question. NEMO works for 3D simulations.
The no jacobian structure is all good, this simply means you are running an explicit simulation. I am in the process of verifying the implicit capabilities.

Unfortunately, one of the biggest issues with NEMO is speed. Running large grids will take a while to get through the preprocessing stage and is best done in parallel. The link with Mutation++ runs much quicker (though is still slower than a typical simulation).

Id be happy to help out with other problems you may run into and try to help.

Best,
Wally

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
On grid independent solution for pulsatile flow	David	FLUENT	5	March 25, 2022 03:33
wrong SU2 calculation for lift and drag coefficient for NAC4421	mechy	SU2	7	January 9, 2017 05:18
Which grid generator for SU2?	Chris Lee	SU2	3	October 3, 2014 12:59
best setting for SU2	mechy	SU2	3	April 20, 2014 19:13
Possible Bug in pimpleFoam (or createPatch) (or fluent3DMeshToFoam)	cfdonline2mohsen	OpenFOAM	3	October 21, 2013 09:28

June 28, 2021, 14:09		#2
wallym Senior Member Wally Maier Join Date: Apr 2019 Posts: 123 Rep Power: 7	Hi Maximilian, Thanks for using NEMO! and thanks for your question. NEMO works for 3D simulations. The no jacobian structure is all good, this simply means you are running an explicit simulation. I am in the process of verifying the implicit capabilities. Unfortunately, one of the biggest issues with NEMO is speed. Running large grids will take a while to get through the preprocessing stage and is best done in parallel. The link with Mutation++ runs much quicker (though is still slower than a typical simulation). Id be happy to help out with other problems you may run into and try to help. Best, Wally