Increasing max linear solver iterations in HyperworksCFD
I would like to increase the maximum number of iterations for the temperature and radiation equations. (Log files attached)
I tried to set this in the UI for Hyperworks CFD but it seems there are no fields for this to be filled in for radiation.
I then tried to fill this in the input file by using the acuTrans commands. (Input file attached)
# +----------------------------------------------------------------------+ # | Time Integration | # +----------------------------------------------------------------------+ TIME_INTEGRATION { initialize_stokes = on initialize_turbulence = on } STAGGER( "temperature" ) { num_krylov_vectors = 20 min_stagger_iterations = 2 max_stagger_iterations = 4 min_linear_solver_iterations = 10 max_linear_solver_iterations = 4000 } STAGGER( "radiation" ) { equation = radiation min_stagger_iterations = 2 max_stagger_iterations = 4 convergence_tolerance = 1.e-3 lhs_update_frequency = 1 linear_solver = gmres min_linear_solver_iterations = 10 max_linear_solver_iterations = 4000 num_krylov_vectors = 40 linear_solver_tolerance = 0.01 projection = on } LINEAR_SOLVER_PARAMETERS { num_radiation_projection_vectors = 5 } Problem is, when i run this in Compute Console, i get this;
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Assuming you've launched directly from HyperWorks CFD previously, I would try removing the . from the name of the input file. Compute Console may not like that. In general, I recommend using underscore _ for separators, rather than other characters.
Appreciate the advice but I have launched far too many from compute console with a variation of A#.#_etc and they have worked before.
That said I did try anyway. Resaved the HMCFD file in a new folder, exported, and then ran again in compute console. Still got the same error dialogue box.
The input file where I just input the staggers for temperature works fine. There is definitely something wrong with the radiation one but I can't figure out why. Is there no way to do radiation staggers in the HMCFD UI?
Appreciate the advice but I have launched far too many from compute console with a variation of A#.#_etc and they have worked before.
That said I did try anyway. Resaved the HMCFD file in a new folder, exported, and then ran again in compute console. Still got the same error dialogue box.
The input file where I just input the staggers for temperature works fine. There is definitely something wrong with the radiation one but I can't figure out why. Is there no way to do radiation staggers in the HMCFD UI?
Actually, i apologise!
Turns out if you edit the input file the fullstop does matter. i tried again now and it works fine.
Sorry, about earlier. I resaved my HMCFD file and exported, and then without thinking just ran an unedited input file.
Marking you answer as correct now.
Altair EmployeeAssuming you've launched directly from HyperWorks CFD previously, I would try removing the . from the name of the input file. Compute Console may not like that. In general, I recommend using underscore _ for separators, rather than other characters.
Assuming you've launched directly from HyperWorks CFD previously, I would try removing the . from the name of the input file. Compute Console may not like that. In general, I recommend using underscore _ for separators, rather than other characters.