Heat Transfer and Fluid Mechanics Measurements in Transitional Boundary Layer Flows

[+] Author and Article Information
T. Wang

Department of Mechanical Engineering, Clemson University, Clemson, S.C.

T. W. Simon

Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minn.

J. Buddhavarapu

TSI, Inc., St. Paul, Minn.

J. Eng. Gas Turbines Power 107(4), 1007-1015 (Oct 01, 1985) (9 pages) doi:10.1115/1.3239804 History: Received December 27, 1984; Online October 15, 2009


Experimental results are presented to document hydrodynamic and thermal development of flat-plate boundary layers undergoing natural transition. Local heat transfer coefficients, skin friction coefficients, and profiles of velocity, temperature, and Reynolds normal and shear stresses are presented. A case with no transition and transitional cases with 0.68 percent and 2.0 percent free-stream disturbance intensities were investigated. The locations of transition are consistent with earlier data. A late-laminar state with significant levels of turbulence is documented. In late-transitional and early-turbulent flows, turbulent Prandtl number and conduction layer thickness values exceed, and the Reynolds analogy factor is less than, values previously measured in fully turbulent flows.

Copyright © 1985 by ASME
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