CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Pre-Processing

Helyx using MRF

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

LinkBack Thread Tools Search this Thread Display Modes
Old   November 23, 2017, 04:02
Question Helyx using MRF
New Member
Join Date: Jul 2013
Location: Germany
Posts: 8
Rep Power: 10
hotti24 is on a distinguished road
Good Day everybody!

I’m trying to simulate a big fan using Helyx-OS. I would like to simulate the fan blades moving and pushing the air forwards. Unfortunately I'm doing something wrong. I defined a volume around the blades as MRF and set it to an angular velocity. As boundary conditions I choose the “pressure inlet outlet” for both ends of the main pipe and set the pressure to one zero gradient and one total pressure = 0.

The results are in the two images in the links below.

It seems that the air is moving just circular. It definitely does not get pushed or sucked forward. The main movement of the air seems to be in the wrong direction. The second problem is that the blades are not moving from time step to time step.

What am I doing wrong?


Last edited by hotti24; November 23, 2017 at 07:24.
hotti24 is offline   Reply With Quote

Old   October 28, 2020, 09:40
Default Need help sir
New Member
Ahmed Abrar Shayor
Join Date: Sep 2020
Location: Bangladesh
Posts: 19
Rep Power: 3
Shayor is on a distinguished road
Send a message via Skype™ to Shayor
Sir I really need help from you as a new user of Helyx OS.I just want to know is there any limitation of Helyx OS.If so what are they could please tell me?I would be really really grateful.Thank you sir.
Shayor is offline   Reply With Quote


fan aerodynamic, helyx, mrf, multi reference frams, rotating mesh

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
MRF and topoSet problem- Rotating volume doesn't rotate OpenFOAM 1 April 4, 2021 13:35
Fan-assisted Natural Ventilation Simulation - Issues with results for an MRF case Tellur OpenFOAM Running, Solving & CFD 0 July 15, 2016 02:04
Possibly serious MRF implementation issue Ali Blues OpenFOAM Bugs 1 December 16, 2015 06:04
MRF setup OpenFOAM Pre-Processing 1 August 6, 2015 09:36
Should an empty MRF zone really induce this much cross-flow? sylvester OpenFOAM 5 November 18, 2010 03:48

All times are GMT -4. The time now is 19:12.