CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

Flow around a sphere using chtMultiRegionFoam

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

LinkBack Thread Tools Display Modes
Old   March 16, 2014, 15:20
Default Flow around a sphere using chtMultiRegionFoam
New Member
Join Date: Mar 2014
Posts: 1
Rep Power: 0
Niccolo is on a distinguished road
Hi everyone,

I am new to openFoam. Hope someone can help me .

I am trying to simulate an isothermal, laminar flow around a sphere with chtMultiRegionFoam (after I'll try to model heat generation inside the sphere). My mesh domain is 6m x 6m x 6m with a 1.2m D sphere at the centre. I have imposed no-slip condition on the sphere, fixed velocity at the inlet, inletOutlet condition at the outlet and slip conditions at the other 4 boundaries. As for the pressure I used fixedValue at the outlet and zeroGradient at the inlet.

The problem I have is that it seems that instabilities are generated at one corner of the boundary so that I have backup flow at the outlet. These instabilities get worse with decreasing the velocity so I suspect has something to do with the solver settings

I attached the file I used in the simulation and the picture of a section of my system (Water is flowing left to right at 0.1 m/s)

Any help is greatly appreciated! Thank you!

Attached Images
File Type: jpg screenshot.jpg (14.2 KB, 41 views)
Attached Files
File Type: gz sphereiso.tar.gz (9.1 KB, 12 views)
Niccolo is offline   Reply With Quote


chtmultiregionfoam, flow around a sphere

Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Review: Reversed flow CRT FLUENT 0 July 20, 2012 13:03
Creating spherical domain for solving flow around a sphere jamessbriscoe OpenFOAM Meshing & Mesh Conversion 0 July 19, 2012 11:36
Flow past a sphere Fabio FLUENT 23 December 18, 2009 16:32
Can 'shock waves' occur in viscous fluid flows? diaw Main CFD Forum 104 February 16, 2006 06:44
3D sphere flow MH Kim Main CFD Forum 1 August 8, 2005 17:06

All times are GMT -4. The time now is 22:52.