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How find Drag coefficient of a body with ANSYS CFX

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Old   October 1, 2008, 18:03
Default How find Drag coefficient of a body with ANSYS CFX
  #1
Jhonathan
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Hi.

How can i find the drag coefficient of a body with ANSYS CFX?

Thanks.
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Old   October 1, 2008, 21:42
Default Re: How find Drag coefficient of a body with ANSYS
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Miguel
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You can integrate pressure field and shear stress field over the body surface (CFX-POST). If the integration is in the parallel direction to the flow you got drag force. If the integration is in the normal direction, instead, you got lift force.
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Old   October 2, 2008, 18:07
Default Re: How find Drag coefficient of a body with ANSYS
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Glenn Horrocks
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Hi,

A better way is to use the force_x/y/z functions as that calculates the total force on the surface. These can be called as a CEL expression as the simulation progresses or done in post-processing in CFX-Post.

Glenn Horrocks
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