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How to use 1D profile data as 360 Inlet profile?

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Old   July 16, 2012, 11:01
Default How to use 1D profile data as 360 Inlet profile?
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don lenardo
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Hello,

I want to use a 1D velocity profile along a line (r,u,v,w) as a 360 INLET boundary for an other case? Is it possible to "rotate" this 1D profile data by 360 to get a full 360 boundary field?

Thanks in advance.

Markus
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Old   July 16, 2012, 12:50
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Use a cylindrical coordinate system.
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Old   July 16, 2012, 14:11
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I have only the Velocity components u,v,w at one's disposal along the line (that means u,v,w along the radius r).

If I use this input profile in cyclindrical coordinate frame (Axial component = Line 1.Velocity u(r), Radial component = Line 1.Velocity v(r),Thetacomponent = Line 1.Velocity w(r) ), the inlet profile displayed by vectors does not match with the original one! That's clear because u is indeed equal to the axial component but v is not euqal to the radial component and w is not equal to the theta component (in my case with the exception of the y axis with z = 0). Or do anyone know, how to transform all these cartesian values into cyclindrical one in cfx?!

Any other ideas?
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Old   July 16, 2012, 16:06
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It should be possible to transform the coordinates of a cartesian coordinate system into a cylindrical one and the other way round.

http://en.wikipedia.org/wiki/Cylindr...rdinate_system

The transformation doesn't need to be done in CFX, you can use Matlab, Excel or whatever suits you.
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Old   July 16, 2012, 17:01
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Yes,the transformation is comprehensible for me but laborious as well. Therefore, I hoped that there is a transformation possible in cfx. OK, if there is no chance for transforming I am going to consider about another approach.

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