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AN ABSTRACT OF THE THESIS OF Stephen David Louis Snider for the degree of Master of Science in
 

Summary:  AN ABSTRACT OF THE THESIS OF
Stephen David Louis Snider for the degree of Master of Science in
Mechanical Engineering presented on April 18, 2008.
Title: Detection and Analysis of Separated Flow Induced Vortical Structures
Abstract approved:
Sourabh V. Apte
Flow separation is an important phenomenon in fluid dynamics because of the
effect it has on lift and drag on immersed bodies. Areas of swirl within a
separated flow region may have a distinct effect on the surface forces, modifying
the lift and drag characteristics. A correlation between the passage of vortical
structures and the surface pressure can be used to determine locations on the
surface most affected by separation and swirls in the flow. These locations can be
used to place sensors to detect any variations in flow patterns that can be used to
control lift and drag.
Unsteady separated flow over a square cylinder and a thin airfoil at high
angle of attack are investigated using large eddy simulation. A full
three-dimensional simulation is performed using high performance parallel
computing. The flow Reynolds number is on the order of 104
in both cases. At
this Reynolds number, both flows contain separation and periodic vortex

  

Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University

 

Collections: Engineering