-
-
October 9, 2024 at 3:40 amDENGSubscriber
I have a problem with working out the ICFD LS-Dyna model.When running the file, there is a problem with temperature not converging. How can this be resolved? How is the "cv cp c1 c2 pr "in the *CESE_EOS_IDEAL_GAS and *CESE_MAT_GAS keywords obtained, and how should the parameters of the mixed gas at different temperature and pressure be calculated?I would like to upload the complete document for you to see how to proceed?
*CONTROL_TERMINATION
$# endtim endcyc dtmin endeng endmas nosol
0.001 0 0.0 0.01.000000E8 0
*CONTROL_TIMESTEP
$# dtinit tssfac isdo tslimt dt2ms lctm erode ms1st
1.00000E-7 0.6 0 0.0 0.0 0 0 0
*DATABASE_BINARY_D3DUMP
$# cycl lcdt beam npltc psetid
100000.0 0 0 0 0
*DATABASE_BINARY_D3PLOT
$# dt lcdt beam npltc psetid
1.00000E-6 0 0 0 0
*CESE_CONTROL_LIMITER
$# idlmt alfa beta epsr
0 2.0 1.0 0.5
*CESE_CONTROL_SOLVER
$# icese iflow igeom iframe
200 1 3 0
*CESE_CONTROL_TIMESTEP
$# iddt cfl dtint
1 0.51.00000E-7
*CESE_INITIAL_CHEMISTRY
$# chemid compid
5 11
$# uic vic wic rhoic pic tic hic
0.0 0.0 0.0 16.708 2000000 300.0 0.0
*CESE_INITIAL_CHEMISTRY_SET
$# setid chemid compid
102 5 11
$# uic vic wic rhoic pic tic hic
0.0 0.0 0.0 1.03.000000E7 3000.0 0.0
*CESE_PART
$# pid mid eosid
2 1 1
*CESE_BOUNDARY_NON_REFLECTIVE_SET
$# ssid
1
*CESE_EOS_IDEAL_GAS
$# eosid cv cp
1 997.0 1418.0
*CESE_MAT_GAS
$# mid c1 c2 pr
12.08600E-6 163.82 0.16*CHEMISTRY_CONTROL_FULL
$# id errlim rhomin tmin
5 0.0 0.0 0.0
*CHEMISTRY_COMPOSITION
$# id modelid
11 10
$# molfr species
2.0H2
1.0O2
3.76N2
*CHEMISTRY_MODEL
$# modelid jacsel errlim
10 1 0.0
$#
det_n2.inp
$#
thermdyna.dat
$#
trandyna.dat
*END -
October 15, 2024 at 4:21 am15889756839SubscriberI came across the same problem, anyone can help us?
-
October 15, 2024 at 10:59 pmReno GenestAnsys Employee
Hello Deng,
What error message are you getting? Which version of LS-DYNA are you using? You mean CESE and not ICFD correct?
Note that Ansys employees are not allowed to upload and download files on the Ansys Forum. You can still post your model here and hopefully other users will chime in.
Reno.
-
October 16, 2024 at 3:33 pm
-
-
October 16, 2024 at 5:54 pmReno GenestAnsys Employee
Hello Deng,
The LS-DYNA examples website is still available:
https://www.dynaexamples.com/cese
Although most of the content has been moved to lsdyna.ansys.com:
https://lsdyna.ansys.com/knowledge-base/cese/cese-cese/
I don't think the training class is available anymore.
Reno.
-
- You must be logged in to reply to this topic.
-
761
-
407
-
264
-
201
-
162
© 2024 Copyright ANSYS, Inc. All rights reserved.