# 3D Wing

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 May 17, 2012, 01:54 3D Wing #1 New Member   samrat himvanth nanduri Join Date: May 2012 Posts: 23 Rep Power: 5 HI could any1 help me on how to assign pitch and yaw angles in fluent while running a simulation over a 3D wing. I want to assign both these values at the same time..

 May 17, 2012, 02:59 #2 Super Moderator     Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,910 Blog Entries: 6 Rep Power: 38 Let say fuselage is in X-Y plane and wings along the Z-direction. In this case logntitudal axis is X and vertical one is Y. The Z-axis is pointing out of X-Y plane. Pitch angle = alpha Yaw angle = beta Formulae are: Case 1: Only alpha (Beta = 0) X = Cos (alpha) Y = Sin (alpha) Z = 0 Case 2 : Only Beta (Alpha = 0) X = Cos (Beta) Y = 0 Z = Sin (Beta) Case 3 : Both Alpha and Beta (360 model) X = Cos (alpha) cos (Beta) Y = Sin (Alpha) Z = Cos (alpha) sin (Beta) http://en.wikipedia.org/wiki/Axis-angle_representation http://en.wikipedia.org/wiki/Yaw,_pi...93Bryan_angles http://en.wikipedia.org/wiki/Flight_...wing_aircraft) Last edited by Far; May 17, 2012 at 05:11.

May 17, 2012, 03:13
#3
New Member

samrat himvanth nanduri
Join Date: May 2012
Posts: 23
Rep Power: 5
Quote:
 Originally Posted by Far Let say fuselage is in X-Y plane and wings along the y-direction. In this case logntitudal axis is X and vertical one is Y. The Z-axis is pointing out of X-Y plane. Pitch angle = alpha Yaw angle = beta Formulae are: Case 1: Only alpha (Beta = 0) X = Cos (alpha) Y = Sin (alpha) Z = 0 Case 2 : Only Beta (Alpha = 0) X = Cos (Beta) Y = 0 Z = Sin (Beta) Case 3 : Both Alpha and Beta (360 model) X = Cos (alpha) cos (Beta) Y = Sin (Alpha) Z = Cos (alpha) sin (Beta) http://en.wikipedia.org/wiki/Axis-angle_representation http://en.wikipedia.org/wiki/Yaw,_pi...93Bryan_angles http://en.wikipedia.org/wiki/Flight_...wing_aircraft)

Thank you for the reply...it was really grateful..I wanted to ask you of where to apply these formulas.. in the boundary conditions while setting the inlet velocities or at any other place,,,

 May 17, 2012, 03:36 #4 Super Moderator     Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,910 Blog Entries: 6 Rep Power: 38 At : Inlet velocity (incompressible flow) OR pressure far field (compressible flow)

 May 17, 2012, 04:51 #5 New Member   samrat himvanth nanduri Join Date: May 2012 Posts: 23 Rep Power: 5 hi thanks..i'm finding it a bit difficult assigning the values..cold you pls let me know the formula while the wing is in the Z direction

 May 17, 2012, 04:58 #6 Super Moderator     Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,910 Blog Entries: 6 Rep Power: 38 Need to check it. But you can rotate your model in Fluent.

May 17, 2012, 05:03
#7
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Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
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Quote:
 formula while the wing is in the Z direction
Leading/trailing edge is parallel to Z axis? If yes, then same formulae are valid.

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