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Define total mesh diclpacement in theta Direction

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Old   November 10, 2013, 02:46
Default Define total mesh diclpacement in theta Direction
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omid
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Hi all

As know there is 6 predefined variable in mesh deformation simulation in CFX; Total Mesh Displacement X,Y,Z and Mesh Displacement X,Y,Z
Also there is a relation between cylindrical and Cartesian coordinate as:
theta = Arctan y/x
if you use this :
Total mesh displacement theta = Arc tan (Total mesh dispalcement y/Total mesh dispalcement x)

the errors occurs in first time steps when Total mesh dispalcement=0
So how can define Total mesh displacement Theta?

Best regards.
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Old   November 10, 2013, 04:28
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Glenn Horrocks
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Use atan2 instead.
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