Affiliation:
1. National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics & Astronautics, Nanjing, China
Abstract
With the objective of reducing windage power losses (WPL) in herringbone gears, WPL experiments involving the use of a shroud are conducted. Based on computational fluid dynamics (CFD), a herringbone gear numerical model is established. Based on the renormalization group (RNG) k–ε two-equation turbulence model and dynamic mesh technique, the features of flow field distribution around the gear; mechanism of reduction of WPL; shroud installation distance, coverage, and installation position; and influence law of WPL are analyzed. The CFD and experimental results, which exhibit good consistency, are used to infer the WPL behavior with respect to the input parameters.
Funder
National Natural Science Foundation of China
National Science and Technology Major Project
Reference24 articles.
1. Hill HJ, Kunz RF. A computational investigation of gear windage. NASA/ CR- 2012-217807, E-18542, W911W6-06-2-0002, 2012.
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