# Moving workpiece instead of Heat source Problem

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 April 11, 2013, 03:57 Moving workpiece instead of Heat source Problem #1 Senior Member   Mohammad Shakil Ahmmed Join Date: Oct 2012 Location: AUS Posts: 132 Rep Power: 7 Sponsored Links Hi I'm facing a strange problem...I'm solving the equation below dT/dt - v* dT/dx - (k/rho*Cp) (d2T/dx2+d2T/dy2+d2T/dz2) =0 v= welding speed My intention is to instead of moving the heat source I want to move the work piece itself. In OpenFOAM, I have modelled the equation like this: TEqn.H { volVectorField gradT = fvc::grad(T); volScalarField dtdx = gradT.component(0); solve ( fvm::ddt(T) - fvm::laplacian(DT, T) - VX*dtdx ) } For declaration of VX I have tried following both ways: 1. dimensionedScalarField 2. volVectorField and then taking X component of the velocity (VX) But the problem is that, solution is acting like a fixed heat source...it's not moving.... Anyone can give me idea to work out this .....Thnx in advance
 Sponsored Links

 April 20, 2013, 23:17 #2 New Member   Chris Prohoda Join Date: Mar 2013 Posts: 6 Rep Power: 6 Why are you multiplying the dT/dx term by a field? Does the welding speed vary with location? It seems that a dimensionedScalar would work if the welding speed in constant across the entire system (though not necessarily constant in time).

 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 James FLOW-3D 11 January 7, 2015 22:59 Sami.Sawalha ANSYS 0 February 17, 2013 03:35 diffo Fluent UDF and Scheme Programming 0 August 20, 2009 06:10 new_cfd_analyst FLUENT 1 January 25, 2007 15:37 John FLUENT 1 April 9, 2003 13:08

 Sponsored Links

All times are GMT -4. The time now is 03:22.

 Contact Us - CFD Online - Top