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Navier-Stokes simulations of the effects of suction holes on a flat plate boundary layerDirect numerical simulations (DNS) of the Navier-Stokes equations are employed to explore the effects of suction holes on transition in a laminar flat plate boundary layer. The Navier-Stokes equations are cast in vorticity-velocity form. Periodicity is imposed in spanwise direction; all other spatial derivatives are discretized with fourth order compact differences. An explicit fourth order Runge-Kutta scheme is employed for the time-integration of the vorticity transport equations. Suction is applied through a row of holes aligned in spanwise direction. For low suction strengths, each hole generates a pair of stable streamwise vortices. When the suction strength exceeds a critical value, the vortices become unstable. For high suction strengths, vortex shedding occurs right at the suction holes. Our numerical findings agree well with experimental observations.
Document ID
19950014677
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Meitz, Hubert L.
(Arizona Univ. Tucson, AZ, United States)
Fasel, Hermann F.
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1994
Publication Information
Publication: AGARD, Application of Direct and Large Eddy Simulation to Transition and Turbulence
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
95N21094
Funding Number(s)
CONTRACT_GRANT: NAG1-1422
Distribution Limits
Public
Copyright
Other
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