IGTC-18 / ASME-83-GTJ-8 ON THE NATURE OF JETS ISSUING FROM A ROW OF HOLES INTO A LOW REYNOLDS NUMBER MAINSTREAM FLOW(Session A-5 Heat Transfer V (Film Cooling))

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概要

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• Measurements are reported of the temperature and velocity fields above an adiabatic flat plate through which air is injected via a row of circular injection holes inclined at an angle of 35°to the surface. A mainstream flow of air over the plate is present, with Reynolds number based on stream velocity and injection tube diameter of 3.4×10^3 throughout the experiments. The boundary layer approaching the row of holes is either laminar or turbulent and either fully-developed laminar or turbulent pipe flow is present in the injection hole (in the absence of the mainstream). The jets emanate from the holes at a mass flux rate from 0.2 to 2.0 times that of the mainstream flow. Key findings are: (1) a laminar jet can penetrate into the main flow with a smaller mass flux than a turbulent jet ; and (2) a turbulent-approaching boundary layer generates a wider domain of interaction between the jets and the mainstream than a laminar-approaching boundary layer for the same blowing rate.

• 公益社団法人日本ガスタービン学会の論文

著者

• Yoshida T.

  National Aerospace Laboratory

• Goldstein R.j.

  Mech. Engr. Dept. Univ. Of Minnesota

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• IGTC-18 / ASME-83-GTJ-8 ON THE NATURE OF JETS ISSUING FROM A ROW OF HOLES INTO A LOW REYNOLDS NUMBER MAINSTREAM FLOW(Session A-5 Heat Transfer V (Film Cooling))
• IGTC-7 UNSTEADY TEMPERATURE ANALYSIS OF AIR-COOLED TURBINE VANES(Session A-2 Heat Transfer II (Unsteady))

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