CFD Online Discussion Forums - [ANSYS Meshing] How to force meshing to create a mesh in .msh

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How to force meshing to create a mesh in .msh

Hello everyone

My goal is to make a parametric study of a geometry, and mesh this geometry whatever the configuration.
In the end i MUST have a .msh file without connecting my mesh to a Fluent module (i could but i will consume computing time)

In meshing i set my preference to "CFD" and prefered solver "fluent" but in the end i have a .mshdb and not a .msh file

How can i force meshing or workbench to give me a .msh file for each configuration ?

Many thanks in advance

jan

export is as .msh file?

my loop (geometry => mesh => parameter => geometry) is generating autmatically .mshdb files and not .msh as i would like. Should it be ?

post your script please!

here it is :) i connected my mesh to a fluent but i don't need the fluent result, and it is slowing the process. My goal is to make the same without fluent and have in the end a mesh with .msh extension and not .mshdb

thank you

just double - click on your mesh, generate the mesh and then go to File>Export and export it as .msh file.

Thank you for your answer Kapi, but i am afraid i did not make myself clear :

Indeed a manual action in the Export menu can be a solution, but i want to find another solution that will avoid the manual solution for each design point considering i have more than 50 design point ( so manually can be long, and i may do 50 other DP for another geometry)

So to avoid this i found a temporary solution => connect my mesh to Fluent , it "forces" Meshing to create a .msh instead of a .mshdb , but Fluent draws computation time uselessely considering i don't want any output from fluent, just my .msh

Hence my question can i have a .msh without using Fluent AND the manual action File=>Export

Sorry if i was imprecise, and again thank you for your time

Hi Jan,

you have to create a "try.wbjn" file and run it for that.
something of this sort:

Code:

mshPath=  r"C:\Users\......\try.msh"

# encoding: utf-8

SetScriptVersion(Version="16.0")

template1 = GetTemplate(TemplateName="Mesh")

system1 = template1.CreateSystem()

mesh1 = system1.GetContainer(ComponentName="Mesh")

mesh1.Edit()

script = open('mymesh.js', 'r')

mesh1.SendCommand(Command=script.read())

script.close();

mshPath = mshPath.replace('\\', '\\\\')

command2Send = """DS = WB.AppletList.Applet("DSApplet").App;

var meshBranch = DS.Tree.FirstActiveBranch.MeshControlGroup;

var filename = "%s";

DS.Script.doFileExport(filename);""" %(mshPath)

mesh1.SendCommand(Command = command2Send)

mesh1.Exit()

The only problem I see how you will give command to run it.
to run this file you have to create ".bat" file and give command to run the above file.
something like this:

Code:

"C:\Program Files\ANSYS Inc\v160\Framework\bin\Win64\RunWB2.exe" -I -R try.wbjn

so you have to create bat file, and run wbjn file to export your mesh as .msh file.

if you are creating mesh very often , I would suggest take path of doing scripting and automate your process.

Hope it helps

Cheers
KAPI

thanks a lot Kapi !
i am trying this and i am coming back to you

Did you achieve to do this ? I am trying to do the same thing and can't seem to save the file, or at least I cannot find it in my computer...Could you please help me ?