Three-dimensional simulation of turbulent separated and reattached flow and heat transfer over a blunt flat plate is presented. The Reynolds number analyzed is 5000. The vortices shed from the reattachment flow region exhibit a hairpin-like structure. These large-scale vortex structures greatly influence the heat transfer in the reattachment region. Present results are compared with the previous three-dimensional calculations at low Reynolds number and it is found that there is no essential difference between two results with respect to the flow structure. The reattachment length is about five plate thicknesses, which is nearly equal to the previous experimental ones. The velocity distributions and turbulence intensities are in good agreement with the experimental data. Further, it is clarified that Nusselt number and temperature distributions greatly depend upon the Reynolds number, though their characteristic behaviors are qualitatively well simulated.
Direct Numerical Simulation of Turbulent Separated Flow and Heat Transfer Over a Blunt Flat Plate
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division August 12, 2002; revision received April 30, 2003. Associate Editor: S. P. Vanka.
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Yanaoka, H., Yoshikawa, H., and Ota, T. (September 23, 2003). "Direct Numerical Simulation of Turbulent Separated Flow and Heat Transfer Over a Blunt Flat Plate ." ASME. J. Heat Transfer. October 2003; 125(5): 779–787. https://doi.org/10.1115/1.1597623
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