CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

New free graphical CFD solver: Civil-CFD

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree5Likes
  • 1 Post By civilcfdauthor
  • 1 Post By naffrancois
  • 1 Post By sbaffini
  • 1 Post By civilcfdauthor
  • 1 Post By civilcfdauthor

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 28, 2018, 14:49
Default New free graphical CFD solver: Civil-CFD
  #1
New Member
 
Michael Celli
Join Date: Aug 2018
Posts: 3
Rep Power: 5
civilcfdauthor is on a distinguished road
I wrote a simple 3D CFD solver that is intended for civil engineering (water resources and municipal water/wastewater) applications. Meshing, case development, simulation and visualization can all be performed from the included graphical interface. Exporting results to Paraview is also supported.

The software is available here: http://civilcfd.github.io

Civil-CFD solves the Navier-Stokes equations in 3 dimensions. The VOF method is used for free surface flows. The k-E turbulence model is also used. There are no advanced sub-models at this time for sediment, moving mesh, etc.

Civil-CFD is free software released under the GPL. A 64-bit Windows binary is provided, or it can be built from source in Windows or Linux using CMake.

This is the first general release. Please keep in mind that results have not been validated by physical modeling or comparisons to commercial codes. This is a personal project I started out of interest in CFD and I hope you might find it useful.
sbaffini likes this.
civilcfdauthor is offline   Reply With Quote

Old   August 29, 2018, 03:28
Default
  #2
Senior Member
 
Join Date: Oct 2011
Posts: 165
Rep Power: 12
naffrancois is on a distinguished road
Thank you for sharing your software

I downloaded and installed the binaries but when loading the bump example, if I try to navigate to mesh or geometry the program crashes with a windows message "program stoped working". Windows 7 pro

Also I wanted to ask you how you built petsc libraries for native windows, some time ago I was looking to do it but couldn't find a true way. Would you have any link or reference ?

Thank you
civilcfdauthor likes this.
naffrancois is offline   Reply With Quote

Old   August 29, 2018, 12:20
Default
  #3
Senior Member
 
sbaffini's Avatar
 
Paolo Lampitella
Join Date: Mar 2009
Location: Italy
Posts: 1,778
Blog Entries: 29
Rep Power: 35
sbaffini will become famous soon enoughsbaffini will become famous soon enough
Send a message via Skype™ to sbaffini
May I also ask what kind of meshing is used? Is it cut-cell on a uniform background mesh?

Thanks
civilcfdauthor likes this.
sbaffini is offline   Reply With Quote

Old   August 29, 2018, 12:26
Default
  #4
New Member
 
Michael Celli
Join Date: Aug 2018
Posts: 3
Rep Power: 5
civilcfdauthor is on a distinguished road
Quote:
Originally Posted by naffrancois View Post
Thank you for sharing your software

I downloaded and installed the binaries but when loading the bump example, if I try to navigate to mesh or geometry the program crashes with a windows message "program stoped working". Windows 7 pro

Also I wanted to ask you how you built petsc libraries for native windows, some time ago I was looking to do it but couldn't find a true way. Would you have any link or reference ?

Thank you
If it is crashing when you open the mesh or geometry window, then there is some problem with initializing the QVTKOpenGLWidget that displays the 3D visualizations. Can you check if there is a vtk_log.txt file in the Bump example folder? Does it have a line that reads "GLEW could not be initialized"?

If this is the problem, then you likely have an old version of OpenGL installed, and this needs to be upgraded to run this software. What graphics hardware are you using? I have this same problem if I try to run it in VirtualBox since it only supports OpenGL 1.1.

Are you able to run the latest version of Paraview? The latest Paraview release also uses QVTKOpenGLWidget and likely won't work either if Civil-CFD has this issue. Older versions of Paraview won't have this problem since they use the depreciated QVTKWidget.

As for PetSc, I find it works quite well in Windows. There are build instructions for Windows on the official website:https://www.mcs.anl.gov/petsc/docume...n.html#windows. The instructions are a bit out of date as I recall, but it will work with some tinkering. There is also a blog post with some additional instructions https://blogs.msdn.microsoft.com/hpc...sc-on-windows/. Lastly, this StackOverflow post clears up some issues: https://stackoverflow.com/questions/...ion-on-windows. Make sure to install the MSMPI SDK first from the Microsoft website.

Thanks!
naffrancois likes this.
civilcfdauthor is offline   Reply With Quote

Old   August 29, 2018, 12:33
Default
  #5
New Member
 
Michael Celli
Join Date: Aug 2018
Posts: 3
Rep Power: 5
civilcfdauthor is on a distinguished road
Quote:
Originally Posted by sbaffini View Post
May I also ask what kind of meshing is used? Is it cut-cell on a uniform background mesh?

Thanks
The software defines an orthogonal 3D mesh. Each cell has a volume fraction attribute, and each face has an area fraction attribute. The meshing tool takes an STL file and cuts the orthogonal mesh to represent 3D geometry by setting these parameters. This way irregular geometries are preserved in the structured mesh.

The software only supports one large rectangular 3D mesh; however, by defining special boundaries, the user can establish specific areas of the mesh boundaries that have certain attributes (e.g. fixed velocity, hydraulic grade, or volumetric outflow). This feature allows more complex simulations to be run on a simple mesh. The included Pump Station example illustrates how this is accomplished.

Thanks!
sbaffini likes this.
civilcfdauthor is offline   Reply With Quote

Reply

Tags
civil engineering, free, software, solver

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ANSYS Meshing] Help with element size sandri_92 ANSYS Meshing & Geometry 14 November 14, 2018 07:54
Star cd es-ice solver error ernarasimman STAR-CD 2 September 12, 2014 00:01
CFD of water waves phenomena-sawteeth at the free surface + slow execution time nore5 OpenFOAM Running, Solving & CFD 0 May 10, 2013 12:43
CFD Survey extended. Free software. Don Main CFD Forum 1 January 20, 2006 14:04
CFD Survey. Free software Don Main CFD Forum 5 January 20, 2006 14:00


All times are GMT -4. The time now is 07:52.