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Tangential velocity - Theoretical and the one used in different CFD softwares

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Old   October 29, 2012, 06:58
Default Tangential velocity - Theoretical and the one used in different CFD softwares
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Mahesh
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Different velocity components in cylindrical coordinate are
(1) Radial velocity - u
(2) Tangential velocity - v
(3) Axial velocity - w

But the way tangential velocity defined in softwares like star-CCM+ is as follows

Tangential velocity = square root (u square + v square)
or, = sqrt(u2+v2).

Which one is the correct interpretation?
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Old   October 29, 2012, 14:34
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Quote:
Originally Posted by maheshraj View Post
Different velocity components in cylindrical coordinate are
(1) Radial velocity - u
(2) Tangential velocity - v
(3) Axial velocity - w

But the way tangential velocity defined in softwares like star-CCM+ is as follows

Tangential velocity = square root (u square + v square)
or, = sqrt(u2+v2).

Which one is the correct interpretation?

(2) should be the azimuthal velocity ...
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