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Compressible Laminar Boundary Layer and Heat Transfer for Unsteady Motions of a Flat Plate

Simon Ostrach

出版	National Advisory Committee for Aeronautics, 1955
URL	http://books.google.com.hk/books?id=fWEkGwAACAAJ&hl=&source=gbs_api

註釋

The laminar compressible boundary layer and heat transfer over an isothermal semi-infinite flat plate moving with a time-dependent velocity has been analyzed. First-order deviations from the quasi-steady velocity and temperature profiles and boundary-layer characteristics have been computed. For a plate oscillating about a steady velocity, it is shown that the maxima of skin-friction coefficient and local heat-transfer rate are out of phase with the phase velocity; the skin friction leads by angles not exceeding 45 degrees for permissible values of the frequency parameter, whereas the heat transfer is almost in phase with the plate velocity for very small Mach number but depends significantly on the Mach number, plate to stream temperature ratio, and frequency for higher-speed flows.