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How to get velocity vector angle

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Old   April 27, 2010, 03:58
Question How to get velocity vector angle
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farhath
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Hi all,
i have done a cfd simualtion of internal flow with fan modelled usingMRF.
Now i have to get some range of velocity angle of vectors wrt to radius of Mrf(Fan).
i have use this as an input fro fan in other simulation tool.
Thanks in advance
regards
Far
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Old   April 27, 2010, 14:17
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Jouke de Baar
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Is it possible to define a Custom Field Function? You might use the x-velocity, y-velocity and z-velocity to calculate (a field) of the desired angle.

Good luck!
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Old   April 28, 2010, 00:24
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Ling
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choose the MRF zone as reference volume. velocity then can be expressed as axial velocity, tangential velocity and radial velocity. you can define a new user defined function, such as, angle-of-velocity

angle-of-velocity = arctan(radial_v/tangential_v)

This may not be the exact thing you want, just a hint.

Quote:
Originally Posted by farhath View Post
Hi all,
i have done a cfd simualtion of internal flow with fan modelled usingMRF.
Now i have to get some range of velocity angle of vectors wrt to radius of Mrf(Fan).
i have use this as an input fro fan in other simulation tool.
Thanks in advance
regards
Far
nstar is offline   Reply With Quote

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