Acoustic Leading-Edge Receptivity for Supersonic/Hypersonic Flows over a Blunt Wedge
نویسندگان
چکیده
منابع مشابه
A Computational Approach to Swept Leading-Edge Receptivity
Computational techniques developed to simulate receptivity mechanisms near a swept-wing leadingedge are presented. The method is based on hybrid finite-difference and spectral approximations to the compressible Navier–Stokes equations in a generalized coordinate system. Particular attention is paid to boundary treatments in an effort to reduce the generation of spurious waves which can mask the...
متن کاملReceptivity to surface roughness near a swept leading edge
The formation of stationary crossflow vortices in a three-dimensional boundary layer due to surface roughness located near the leading edge of a swept wing is investigated using numerical solutions of the compressible Navier–Stokes equations. The numerical solutions are used to evaluate the accuracy of theoretical receptivity predictions which are based on the parallel-flow approximation. By re...
متن کاملNumerical Simulation of Surface Roughness Effects on Receptivity of Hypersonic Flow Over Blunt Cones
The accurate prediction of laminar-turbulent transition in hypersonic boundary layers is a critical part of the aerodynamic heating analyses on hypersonic vehicles. Despite decades of extensive research, the prediction of hypersonic boundary-layer transition is still mostly based on empirical correlation methods or the semi-empirical n e method because a number of physical mechanisms leading to...
متن کاملSexual conflict over floral receptivity.
In flowering plants, the onset and duration of female receptivity vary among species. In several species the receptive structures wilt upon pollination. Here we explore the hypothesis that postpollination wilting may be influenced by pollen and serve as a general means to secure paternity of the pollen donor at the expense of female fitness. Taking a game-theoretical approach, we examine the po...
متن کاملAdjoint Methods for Receptivity Prediction in Nonparallel Flows
The Adjoint Parabolized Stability Equations (APSE) are used to predict the receptivity of boundary layers to a variety of disturbances. The method is validated through comparisons to direct solutions of the linearized Navier–Stokes (LNS) and adjoint Navier–Stokes (ANS) equations and APSE is found to accurately predict receptivity with significant gains in efficiency compared to Navier–Stokes ba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AIAA Journal
سال: 2017
ISSN: 0001-1452,1533-385X
DOI: 10.2514/1.j055749