Purpose

• Slides or documentation of various topics

• Please check each page shown in the left for the details of each SW. This page describes common steps of running main applications.

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Sample Linux command for industrial applications

Ansys workbench

• runwb2
• runwb2 -oglmesa # using mesa as SW rendering
  • Or check: https://studentcommunity.ansys.com/thread/runtime-errors-on-centos-7-system/)
    • export LD_LIBRARY_PATH+=/ansys_inc/v192/Framework/bin/Linux64/Mesa
    • export LIBGL_ALWAYS_INDIRECT=1
    • export LIBGL_ALWAYS_SOFTWARE=1 -License server/port is supplied from system variable
    • In Windows, it is hard-coded in c:\Program Files\ANSYSInc\Shared Files\Licensing\ansyslmd.ini

Ansys APDL/Launcher

• Classical Ansys MECHANICAL APDL
  • copy /ansys_inc/v192/ansys/data/models/CrankSlot_Flexible.inp
  • Command: ansys192 -np 2 -i CrankSlot_Flexible.inp > log.out
    • file.rst, file.db will be produced
  • Command: launcher -> Select PrepPost from License -> Click run
    • In the menu, General Postproc -> Results Viewer -> Select file.rst

Fluent

• Find Fluent\tutorials\Introductory\Modeling Flow Through porous.zip and unzip
• Steps
  • fluent 3d -g # run fluent 3d without grahics
    • file/read-case-data catalytic_converter.cas.gz # read input
    • it 10 # do 10 iterations
    • wcd "aaa.cas" # save as aaa.cas
    • exit # exit fluent terminal
  • fluent 3d # open as GUI
    • File-> Read -> Case & Datat -> select aaa.cas
    • Click Postprocessing tab -> Graphics zone -> Contours -> Select velocity or Pressure
    • If OpenGL graphics crashes, use software rending as fluent 3d -driver x11

icemcfd

• icemcfd -log aaa.log
• For too small fonts in GUI: Ref: https://www.cfd-online.com/Forums/ansys-meshing/69295-icem-how-can-i-increase-size-letter.html
  • Edit the line 34 of ansys_inc/v193/icemcfd/linux64_amd/lib/ai_env/techTK/layout.tcl
  • From set SmallScreen 0 to set SmallScreen 1

HFSS

• GUI command: ansysedt - It may take > 1 min for the first run
  • Steps
    • copy /ansoft/AnsysEM19.1/Linux64/Examples/HFSS/RF\ Microwave/coaxial_resonator.aedt
    • ansysedt -distributed -machinelist numcores=2 -auto -monitor -ng -batchsolve -batchoptions "HFSS/HPCLicenseType=pool tempdirectory=/tmp" coaxial_resonator.aedt
    • ansysedt # GUI, open coaxial_resondator and Check Filed Overlays

Abaqus

• CAE command: abaqus cae
• When HW rendering fails, use SW rendering: abaqus cae -mesa
• Steps
  • abaqus fetch job=lap*.inp # extracting a sample input
  • abaqus j=lap_joint inter cpus=2 (or 4, 8, 16, 32)
    • Using htop, check if cpus are used as many as requested
    • Took 86 sec in 2 CPUs of Broadwell
  • abaqus cae
    • Open lap_joint.odb and visualize

COMSOL

• Copy /comsol/comsol54/applications/Heat_Transfer_Module/Heat_Exchangers/heat_exchanger_iso.mph
• Steps
  • comsol batch -nn 1 -np 1 -inputfile heat_exchanger_iso.mph -outputfile aaa.mph
    • Batch command using 1 cpu
  • comsol
    • GUI. Open aaa.mph and check Results -> Temperature
  • comsol -nn 1 -np 4
    • Opens GUI with 4 cpu for multi-prcoessing
  • comsol -nn 1 -np 4 -3drend sw
    • Opens GUI with 4 cpus parallel computing and SW rendering for visualization

MATLAB

• Run matlab and check the GUI opens or not
  • Run bench in the MATLAB comand interface
  • This will test CPU speed and 3d graphics
• Possible issues
  • Compatibility with JAVA
    • Try JDK from OS or JAVA engine from SUN
  • Graphics issue
    • When HW rendering fails, run matlab as matlab -softwareopengl with SW rendering

TECPLOT

• Command:
  • tec360
• If HW rendering fails, SW rendering can be used with -mesa
  • tec360 -mesa
  • Note that SW rendering is much slower than HW rendering

When license server connection takes too long (in Windows)

• Add new system variable FLEXLM_TIMEOUT as 3 million ( or 1 million) as 3 sec in windows laptop
• This will be enough for time delay to connect to license server through VPN