Direct Numerical Simulation on the Receptivity, Instability, and Transition of Hypersonic Boundary Layers

来自 Semantic Scholar

喜欢 0

阅读量：

298

作者：

X Zhong，X Wang

展开

摘要：

The prediction of the laminar-turbulent transition of boundary layers is critically important to the development of hypersonic vehicles because the transition has a first-order impact on aerodynamic heating, drag, and vehicle operation. The success of transition prediction relies on a fundamental understanding of the relevant physical mechanisms. In the 20 years since the review by Kleiser & Zang (1991) on the direct numerical simulation (DNS) of the boundary-layer transition, significant progress has been made on DNS in the hypersonic flow regime and in the spatial DNS approach. Many high-order shock-capturing and shock-fitting finite-difference methods have been developed and extensively applied to numerical simulations of the hypersonic boundary-layer transition. DNS has become a powerful research tool and has led to discoveries of new transition mechanisms. This article reviews the recent progress of DNS on hypersonic boundary-layer receptivity, instability, and transition. The current status and futu...

展开

关键词：

Bibliography, Theoretical or Mathematical/ aerodynamics aircraft boundary layer turbulence drag finite difference methods flow instability flow simulation hypersonic flow laminar to turbulent transitions shock waves/ direct numerical simulation hypersonic boundary layer transition hypersonic boundary layer instability laminar-turbulent transition hypersonic vehicles first-order impact aerodynamic heating aerodynamic drag hypersonic flow regime spatial DNS approach high-order shock-capturing finite-difference method high-order shock-fitting finite-difference method transition mechanisms hypersonic boundary-layer receptivity/ A4740K Supersonic and hypersonic flows A4740N Shock-wave interactions A4785 Applied fluid mechanics A0230 Function theory, analysis A0260 Numerical approximation and analysis A4710 General fluid dynamics theory, simulation and other computational methods A4715F Stability of laminar flows A4720 Hydrodynamic stability and instability A4725F Boundary layer and shear turb