Moving Heat Source on CFX

nagas · May 3, 2018, 11:49

Hello!
I am trying to simulate friction stir welding on CFX and I wish to create a moving heat source. On COMSOL Multiphysics that was achieved by applying a translational motion with steady velocity (along x-axis) to the heat transfer. Is there a similar way to do so?

I have also thought that instead of applying velocity u on the heat source, to apply velocity -u on the coordinate system. Is it possible to create a moving coordinate system on ANSYS CFX?

Or in general, how can one create a moving heat source on ANSYS CFX, in terms of a heat flux having a translational motion?

Opaque · May 3, 2018, 15:03

You can model it as a heat source moving, or a transient fixed (space) heat source

Write a CEL expression for heat source as a function of time along the boundary. Such expression should include the speed of the moving source and time to determine the location, as well as the strength of the source.

May 3, 2018, 11:49	Moving Heat Source on CFX	#1
nagas New Member Constantinos Join Date: Mar 2018 Posts: 3 Rep Power: 8	Hello! I am trying to simulate friction stir welding on CFX and I wish to create a moving heat source. On COMSOL Multiphysics that was achieved by applying a translational motion with steady velocity (along x-axis) to the heat transfer. Is there a similar way to do so? I have also thought that instead of applying velocity u on the heat source, to apply velocity -u on the coordinate system. Is it possible to create a moving coordinate system on ANSYS CFX? Or in general, how can one create a moving heat source on ANSYS CFX, in terms of a heat flux having a translational motion? Last edited by nagas; May 3, 2018 at 11:50. Reason: add tags

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May 3, 2018, 15:03		#2
Opaque Senior Member Join Date: Jun 2009 Posts: 1,880 Rep Power: 33	You can model it as a heat source moving, or a transient fixed (space) heat source Write a CEL expression for heat source as a function of time along the boundary. Such expression should include the speed of the moving source and time to determine the location, as well as the strength of the source.