Accession Number:

AD1096360

Title:

A DNS Study on Hypersonic Boundary-Layer Receptivity and a New Transition Control Strategy by Surface Roughness

Descriptive Note:

Technical Report

Corporate Author:

Mechanical and Aerospace Engineering Department, University of California Los Angeles United States

Personal Author(s):

Report Date:

2019-08-21

Pagination or Media Count:

64.0

Abstract:

In this report, our research accomplishments are summarized in the DNS study on hypersonic boundary-layer receptivityand a new transition control strategy by surface roughness 1 DNS study and PSELST based theoretical analysis on thefundamental mechanisms of hypersonic boundary-layer instability and receptivity in the context of the relationship betweensynchronization points and surface roughness location, together with the effects of nose bluntness and thermo-chemicalnon-equilibrium 2 a new transition control strategy using surface roughness 3 a new set of very high-order upwind multilayercompact MLC schemes with spectral-like resolution for hypersonic flow simulations.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE