PS: Dallas, gmsh can work directly with IGES and STEP formats.
If you can export your SolidWorks geometry in one of these
(OpenCascade-friendly) formats, they might work better than an STL
approximation.
just a thought - Nigel
On Saturday, September 9, 2017 at 5:40:28 PM UTC+10, nnunn wrote:
>
> Hi Dallas - thanks for sending the .geo and STL geometry files.
>
> Just checking - I see a long, thin tube with 4 holes near one end, plus
> two cylindrical disks at the other end, punched through with more holes.
>
> - Are you trying to mesh inside the "walls" of the structure, or some
> volume that encloses the structure?
> - What sort of boundary conditions do you need?
> - Can your version of gmsh actually create a mesh from that input?
>
> I'm using gmsh 3.02, and can't get a valid mesh.
> Nigel
>
>
> On Saturday, September 9, 2017 at 8:10:52 AM UTC+10, Dallas Nelson wrote:
>>
>> The geometry was created in solidworks and exported as a .stl. I then
>> used gmsh to convert it to .msh so my guess is something went wrong in the
>> conversion.
>> Here are the steps I used:
>> > File -> Merge -> “filename.stl”
>> > Geometry -> Elementary entities -> Add -> New -> Volume, click on the
>> surface to build the volume
>> > Mesh -> 3D
>> I will attach the .stl and .geo files
>> Thank you
>>
>> On Friday, September 8, 2017 at 2:18:38 PM UTC-7, nnunn wrote:
>>>
>>> Hi Dallas -- may be an error in the way your mesh file defines the fluid
>>> elements.
>>> If your mesh is generated by gmsh, and if you can send the .geo file, I
>>> can take a look.
>>> Nigel
>>>
>>>
>>> On Friday, September 8, 2017 at 5:48:50 AM UTC+10, Dallas Nelson wrote:
>>>>
>>>> I am trying to import my mesh so I can PyFR however I am being met with
>>>> the following error.
>>>>
>>>> christopher@dear5b-cuda:~/PDE_Sim$ pyfr import pde_assem.msh
>>>> pde_assem.pyfrm
>>>> Traceback (most recent call last):
>>>> File "/home/christopher/miniconda3/bin/pyfr", line 11, in <module>
>>>> load_entry_point('pyfr==1.6.0', 'console_scripts', 'pyfr')()
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/__main__.py",
>>>>
>>>> line 110, in main
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/__main__.py",
>>>>
>>>> line 124, in process_import
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/readers/base.py",
>>>>
>>>> line 23, in to_pyfrm
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/readers/gmsh.py",
>>>>
>>>> line 200, in _to_raw_pyfrm
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/readers/base.py",
>>>>
>>>> line 179, in get_connectivity
>>>> File
>>>> "/home/christopher/miniconda3/lib/python3.6/site-packages/pyfr-1.6.0-py3.6.egg/pyfr/readers/base.py",
>>>>
>>>> line 96, in _split_fluid
>>>> KeyError: 4
>>>>
>>>> I am on a linux system running ubuntu 16.04 but am fairly new to linux
>>>> and python so its very possible I have made some mistake somewhere or it
>>>> is
>>>> something that would be painfully obvious to anyone else.
>>>> My goal is to simulate the mixing of two fluids inside a long cylinder
>>>> under different injection configurations if that is relevant at all.
>>>> Please let me know if there is any other information I can supply to
>>>> help get to the bottom of this and thank you for your time.
>>>>
>>>
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