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

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 October 29, 2012, 06:58 Tangential velocity - Theoretical and the one used in different CFD softwares #1 New Member   Mahesh Join Date: Dec 2010 Posts: 9 Rep Power: 8 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?

October 29, 2012, 14:34
#2
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Filippo Maria Denaro
Join Date: Jul 2010
Posts: 3,643
Rep Power: 41
Quote:
 Originally Posted by maheshraj 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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