CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Community Contributions

[RapidCFD] Accuracy RapidCFD vs. OpenFOAM

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 30, 2018, 10:44
Default Accuracy RapidCFD vs. OpenFOAM
  #1
New Member
 
Join Date: May 2018
Posts: 1
Rep Power: 0
A_Ekat is on a distinguished road
Hey


I recently started working with RapidCFD. My first test case is a straight pipe (domain: D= 0.1 m, length 10 m; mesh: hexahedral O-grid, y+~1, ~10 mio. cells; incompressible, kOmega turbulence model). My aim was to test the performance of RapidCFD and compare the results to OpenFOAM (Version 2.3.1), analytical data and experimental data.

As expected, I gained a great speed-up using GPU, but unfortunately my results are less accurate compared to OpenFOAM. Using the same set up (exception: linear solvers, because AINV is not available in OpenFOAM) the calculated pressure drop is underestimated by RapidCFD compared to OpenFOAM and the velocity profile is less steep (both underestimate the analytical data (know ‘problem’ of simulation results)).


EDIT: Convergence behavior is quite similar for RapidCFD and OpenFOAM


Does anyone else noticed a difference in simulation results (RapidCFD – OpenFOAM 2.3.1) Could it be the influence of the linear solver or am I missing something?


Thanks for help!


Ann-Kathrin

Last edited by A_Ekat; May 31, 2018 at 04:55.
A_Ekat is offline   Reply With Quote

Reply

Tags
linear solver, pressure drop, rapidcfd

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
Getting Started with OpenFOAM wyldckat OpenFOAM 26 June 21, 2024 07:54
OpenFOAM 4.0 Released CFDFoundation OpenFOAM Announcements from OpenFOAM Foundation 2 October 6, 2017 06:40
[OpenFOAM.org] A Mac OS X of23x Development Environment Using Docker rt08 OpenFOAM Installation 1 February 28, 2016 20:00
Adventure of fisrst openfoam installation on Ubuntu 710 jussi OpenFOAM Installation 0 April 24, 2008 15:25
The OpenFOAM extensions project mbeaudoin OpenFOAM 16 October 9, 2007 10:33


All times are GMT -4. The time now is 06:12.