NASA NTRS · 20120016625
CFD Technology for Rotorcraft Gearbox Windage Aerodynamics Simulation
Abstract
A computational fluid dynamics (CFD) method is adapted, validated and applied to spinning gear systems with emphasis on predicting windage losses. Several spur gears and a disc are studied. The CFD simulations return good agreement with measured windage power loss. Turbulence modeling choices, the relative importance of viscous and pressure torques with gear speed and the physics of the complex 3-D unsteady flow field in the vicinity of the gear teeth are studied.
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Handschuh, Robert, Hill, Matthew, Kunz, Robert, Long, Lyle, Morris, Philip, Noack, Ralph. 2009-08-01. CFD Technology for Rotorcraft Gearbox Windage Aerodynamics Simulation. https://ntrs.nasa.gov/citations/20120016625
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