Comparison of Typical Turbulence Models in Design of Commercial Aircraft
The prediction of drag coefficient at cruising lift coefficient is one of the most significant targets in the design of commercial aircraft. At present, to improve the calculation precision, one of the good choices is to choose the proper turbulence model, which has not been well done in CFD until now. Based on DLR-F6 wing-body configuration, representative of commercial aircraft, the paper focuses on the comparison between the prediction results of four typical turbulence models (Spalart-Allmaras (SA) model, Wilcox k-ω model, Menters k-ω SST (k-ωSST) model and k-ω EASM model) and the test data in the following three aspects. Firstly, comparison of drag coefficient at cruising lift coefficient Secondly, comparison of wing pressure distribution at various span-wise locations at cruising angle of attack. Thirdly, comparison of wing-root trailing-edge separation bubble at cruising lift coefficient As a result, it is concluded that; the first, the computational drag at cruise lift coefficient of SA turbulence model is the closest to test data; the second, at cruise angle of attack, the computational lift coefficient, surface pressure, and the separation bubble of SA model, k-ωSST model and k-ω EASM model are all very close, and almost same to test data. So, SA turbulence model is considered much better to deal with wing-body configuration like DLRF6.
turbulence model cruising lift coefficient DLR-F6 commercial aircraft CFD
Liu Jieping Zhang Yudong Zhang Weimin
China Academy of Aerospace Aerodynamics, Beijing 100074, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
341-344
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）