Recent progresses on hypersonic boundary-layer transition

Chen, Jianqiang; Yuan, Xianxu; Tu, Guohua; Chen, JiuFen; Zhang, Yifeng; Xu, Guangrui; Tong, Fan; Wan, Baikun

doi:10.1360/sspma-2019-0071

Cited by 15 publications

(1 citation statement)

References 18 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6][7] The boundary layer transition is a complex nonlinear phenomenon that is strongly affected by multiple factors, including freestream disturbances, the Mach number, the Reynolds number, the angle of attack, the wall temperature, leading edge bluntness, the wall roughness, and wall catalysis. 8,9 The current prediction accuracy for the hypersonic boundary layer transition is seriously insufficient. Bertin and Cummings 10 noted that none of the semi-empirical models that have predicted the boundary layer transition position accurately under different flight conditions had been obtained within the past 50 years.…”

Section: Introductionmentioning

confidence: 99%

Noise level effect on the hypersonic boundary layer

Sha

Yuan

Shi

et al. 2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The boundary layer state has a critical effect on hypersonic vehicle performance and the noise level is the main factor causing the differences between the boundary layer transition in a wind tunnel test and that in a real flight. The second mode wave frequency of the 7° half-angle cone models as measured in four hypersonic wind tunnels is collected. The effects of the noise level on the boundary layer are determined by comparing dimensionless parameters, which are nondimensionalized based on computed values. The results indicate that the noise level could affect the second mode wave frequency and the boundary layer thickness, where the second mode wave frequency decreases and the boundary layer thickness increases with increasing noise level. However, the mechanism by which the noise level influences the second mode wave frequency and the boundary layer thickness requires further study.

show abstract