Linear Instability Analysis of Confined Compressible Boundary/Mixing Layers Flow

Zhi Yong Liu; Xiang Jiang Yuan

doi:10.4028/www.scientific.net/AMM.275-277.522

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 275-277Linear Instability Analysis of Confined...

Linear Instability Analysis of Confined Compressible Boundary/Mixing Layers Flow

Abstract:

A compressible supersonic confluent flow composed of boundary layers and mixing layers are studied by linear stability theory. The flow is confined in a two-dimensional adiabatic channel. A slower flow lying in the center mixes with faster boundary layer flows on both sides and two mixing layers are evolved near the centerline. Different unstable modes were discovered and the first mode was found to be most unstable. Three-dimensional disturbances were investigated and comparison of instability features was made with unconfined boundary layer flows. The investigation of different slow flow widths was also made and a smaller spacing between the boundary layer and mixing layer was found to suppress the growth of disturbance.

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Periodical:

Applied Mechanics and Materials (Volumes 275-277)

Pages:

522-526

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.275-277.522

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Online since:

January 2013

Authors:

Zhi Yong Liu, Xiang Jiang Yuan

Keywords:

Boundary Layer, Linear Instability, Mixing Layer, Supersonic Flow, Wall Effect

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