Effect of Suction on the Stability of Supersonic Boundary Layers. Part II—First-Mode Waves

[+] Author and Article Information
J. A. Masad, A. H. Nayfeh

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

A. A. Al-Maaitah

Department of Mechanical Engineering, Mutah University, Jordan

J. Fluids Eng 113(4), 598-601 (Dec 01, 1991) (4 pages) doi:10.1115/1.2926521 History: Received November 05, 1990; Online May 23, 2008


The effect of suction on the first mode of instability of compressible two-dimensional boundary layers is investigated. Suction is found to be more effective in stabilizing the viscous instability, and hence it is more effective at low Mach numbers. Suction decreases the amplification rates at all frequencies and narrows down the band of unstable frequencies. Moreover, for a given frequency, suction decreases the amplification rates at all streamwise locations. Variations of the growth rates of the most amplified first-mode waves with mass flux are found to be almost linear.

Copyright © 1991 by The American Society of Mechanical Engineers
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