Fluent: tips/ Reading

COMMAND
run Fluent from linux command without interface

fluent            to run fluent
fluent 2d     :     2d, single precision solver
fluent 2d     :     3d, single precision solver
fluent 2ddp  :     2d, double precision solver
fluent 3ddp  :     3d, double precision solver


fluent 2d/3d -g  :   -g  run without the GUI or graphics
fluent 3d -g -i Input_file >& Log_File &   : -i  journal read with the name Input_file

it 20  :     run 20 iteration
wd   result.dat:     write data file

exit  (next line : yes)  : to exit fluent

READING

• Intro CFD, FLUENT, http://imechanica.org/files/fluent_13.0_lecture02-intro-to-cfd.pdf
• FLUENT heat transfer modelling, http://www.engr.uconn.edu/~barbertj/CFD%20Training/Fluent/6%20Heat%20Transfer%20Modeling.pdf

• Hide Ansys Fluent Logo : Display > Options > Layout > Deselect Logo

• Change Ansys Fluent background color to white, white background

- In the command line:

           >>   /display/set/colors/color-scheme

           >>  classic (change from default workbench to classic)

           >>  /display/set/colors/foreground/

           >> "black"

           >> /display/set/colors/background

           >> "white"

           >> /display/re-render

Enable laminar models, and activate the vorticity magnitude
>> Define/Models/Viscous >  Laminar

• Check Mesh information, Cells, Faces, Nodes

>> Mesh > Info > Size

• Run Fluent from the specified time step (not from first time step): applicable for the case was terminated before and now you want to continue restart it from the last save.

rc    case.cas     : Read case file
rd
/solve/dual-time-iterate/  Number of physical time steps [1]         /* syntax */
s/d                                                                                                  /*  short form */

dual-time-iterate: Perform unsteady iterations for a specified number of time steps.
Number of physical time steps: desired ending time steps

E.g., run from 1000, and stop at 2000
rc case_1000.cas
rd case_1000.dat
solve/dual-time-iterate 2000

Problem: Even it is calculated from the n th time step but it may be save in form of cas_01.cas, cas_02.cas  with auto-save. You can overcome it by using manual command: wc, wd