Computational Investigation of the Combined Effects of Yaw, Rotation and Ground Proximity on the Aerodynamics of an Isolated Wheel

An exploratory computational investigation using
RANS & URANS was carried out to understand the aerodynamics
around an isolatedsingle rotating wheel with decreasing ground
proximity. The wheel was initially modeled in free air conditions,
then with decreasing ground proximity and increased yaw angle with
rotational speeds. Three speeds of rotation were applied to the wheel
so that the effect of different angular velocities can be investigated. In
addition to rotation, three different yaw angles were applied to the
rotating wheel in order to understand how these two variables
combined affect the aerodynamic flow field around the wheel.

• T. D. Kothalawala
• A. Gatto
• L. Wrobel

• Aerodynamics
• CFD
• Ground Proximity
• Landing Gear
• Wheel
• Rotation
• Yaw.

<p>[1] Fackrell J.E., &ldquo;The Aerodynamics of an Isolated Wheel Rotating in
Contact with the Ground,&rdquo; Ph.D. thesis, University of London, U.K..,
1974.
[2] McManus J. and Zhang X., &ldquo;A Computational Study of the Flow
Around an Isolated Wheel in Contact With The Ground&rdquo;, ASME, Vol.
128, May 2006, pp. 520-530.
[3] Zhang X., Ma Z., Smith M. and Sanderson M., &ldquo;Aerodynamic and
Acoustic Measurements of a Single Landing Gear Wheel&rdquo;, AIAA, 19th
AIAA/CEAS Aeroacoustics Conference, May 2013.
[4] Lazos B. S., &ldquo;Mean Flow Features Around the Inline Wheels of Four-
Wheel Landing Gear&rdquo;, AIAA, Vol. 40, No. 2, February 2002, pp. 193-
198.
[5] Thivolle-Cazat E., Gilli&eacute;ron P., &ldquo;Flow analysis around a rotating wheel&rdquo;,
13th Int Symp on Applications of Laser Techniques to Fluid Mechanics,
June 2006, Paper 1030
[6] Ansys Fluent User Guide, Ansys Inc, Release 13.0, November 2010, pp.
645-646</p>