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.
Descriptors:
- acoustic waves
- convection
- flow fields
- geometry
- navier stokes equations
- shock waves
- simulations
- wave propagation
- boundary layer control
- gas flow
- hydrodynamics
- hypersonic flow
- surface roughness
- turbulent flow
- boundary layer flow
- differential equations
- computational science
- fluid dynamics
- boundary layer
- computational fluid dynamics