# simpleFoam solver

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

 April 20, 2010, 05:14 simpleFoam solver #1 New Member   Jay Join Date: Feb 2010 Posts: 15 Rep Power: 9 Sponsored Links Hi all I am new to OpenFOAM i want to use simpleFoam solver an my problem is... The problem is just like flow over a square cylinder but the inlet is having zero velocity but the square box is having some velocity say 2 m/s. Should I use moving wall concept? and What is kqRWallFunction in k file in 0 folder and epsilonWallFunction in epsilon file? i mean how do i find the values of both? Thanks in advance

 April 22, 2010, 09:42 #2 Member   Join Date: Dec 2009 Posts: 57 Rep Power: 9 Can you elaborate on the problem you are trying to solve? Im not sure I see the difference between a stationary object in a fluid flow of 2m/s and an object moving at 2 m/s through a (quasi-)stationary fluid. The functions you are speaking of are to determine the initial behaviour of k and epsilon (turbulent kinetic energy and its dissipation rate) at the walls, as I understand. If the fluid velocity around the the object is 0 initally, there shouldnt be any turbulence.

 April 23, 2010, 01:15 #3 New Member   Jay Join Date: Feb 2010 Posts: 15 Rep Power: 9 Hi Graham Actually I want to solve two cases 1. The object is moving and the fluid is stationary. 2. the object is steady and fluid is moving. so I want to ask in both the case how would I determine the initial behavior of k and epsilon (turbulent kinetic energy and its dissipation rate) at the walls.as velocity is 2m/s for object in first case and for fluid in second case. Thanks

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post andre OpenFOAM Programming & Development 9 April 29, 2017 08:51 Luiz CFX 4 March 6, 2011 21:02 s.sivakumar OpenFOAM Pre-Processing 0 July 23, 2009 00:51 s.sivakumar OpenFOAM Running, Solving & CFD 0 July 22, 2009 08:00 youngan CFX 0 July 1, 2003 23:32