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Numerical simulation of particle-wave interaction in boundary layersThe effects of wall injection and particle motion on the spatial stability of two-dimensional plane channel flow are investigated. For this purpose, an accurate Navier-Stokes solver to simulate the space-time evolution of disturbances in three-dimensional flows has been developed. The code is operational on the NASA Langley CRAY2 and can be ported to any other supercomputer. The code has been tested extensively in tracking the spatial evolution of two-dimensional disturbances in plane channel flow and provided excellent agreement with the linear theory including at the inflow/outflow boundaries. Preliminary calculations have been performed to investigate the effects of stationary and moving sources of vortical disturbances simulating a particle traveling in the flow field. Results suggest that even at very low amplitudes, vortical disturbances act as amplifiers on the Tollmien-Schlichting waves promoting rapid instability. It is also found that slow moving particles are more dangerous than both stationary and fast moving particles for the same disturbance levels.
Document ID
19910019188
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Biringen, S.
(Colorado Univ. Boulder, CO, United States)
Danabasoglu, G.
(Colorado Univ. Boulder, CO, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-187312
NAS 1.26:187312
Accession Number
91N28502
Funding Number(s)
CONTRACT_GRANT: NAG1-798
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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