# Displacements with the morpher model

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

 LinkBack Thread Tools Display Modes
 April 1, 2010, 19:54 Displacements with the morpher model #1 New Member   Join Date: Jan 2010 Posts: 8 Rep Power: 8 Hi all, I have a problem with the displacements I want to impose on a wall boundary, using the morpher model. I simulate the flow over an hydrofoil and I want to take into account the deformations with a simple beam equations so basically the solution depend only of the loading computed by STAR. It seems that the displacement value I impose is added to the solution at each time step, so it is relative to the mesh deformation of the previous time step. Does anyone know how to impose displacement relative to the initial mesh, or compute the new displacements according to the previous mesh? Thank you in advance.

 April 28, 2010, 11:27 #2 New Member   Thomas Join Date: May 2009 Location: Cottbus Posts: 1 Rep Power: 0 Hi, I'm supposing you had implemented the morphing due field functions. There is an array called \$\$Position and one called \$\$SavedCoord. Position gives you the coordinates of the face at your timestep. SavedCoord contains the coordinates of the startup.. so you can calculate the displacement in every face by: [\$\$Position[0]-\$\$SavedCoord[0], \$\$Position[1]-\$\$SavedCoord[1], \$\$Position[2]-\$\$SavedCoord[2]] At first you should switch "Restore Saved Coordinates" on in the node Solver->Morpher. From this on it is possible to compute the new displacement. You can also access these vectors by UserCoding. hope that helps...

 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 wanglong FLUENT 2 November 26, 2009 00:27 Tim CFX 1 October 7, 2009 06:19 liuyuxuan FLUENT 1 October 2, 2009 15:25 gravis Main CFD Forum 0 October 2, 2009 10:27 Jonas Larsson FLUENT 5 March 13, 2000 04:27

All times are GMT -4. The time now is 19:48.

 Contact Us - CFD Online - Top