Volume 41 Issue 3
Mar.  2026
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ZHANG Shuai, ZENG Jun, FANG Hongyi, et al. Aerodynamic and heat transfer performance measurements for double wall cooled turbine vanes in a hot cascade[J]. Journal of Aerospace Power, 2026, 41(3):20240308 doi: 10.13224/j.cnki.jasp.20240308
Citation: ZHANG Shuai, ZENG Jun, FANG Hongyi, et al. Aerodynamic and heat transfer performance measurements for double wall cooled turbine vanes in a hot cascade[J]. Journal of Aerospace Power, 2026, 41(3):20240308 doi: 10.13224/j.cnki.jasp.20240308

Aerodynamic and heat transfer performance measurements for double wall cooled turbine vanes in a hot cascade

doi: 10.13224/j.cnki.jasp.20240308
  • Received Date: 2024-05-14
    Available Online: 2026-01-04
  • A hot cascade facility equipped with an annular cascade sector of double wall impinge-ment film cooled vanes of energy effective engine (E3) high pressure turbine was used to determine the local gas side temperature and static pressure simultaneously for inlet gas temperature of 1073 K and gas pressure of 0.9 MPa. The cascade gas flow path and positioning of temperature and pressure instrumented test vanes were optimized for the validity of simultaneous measurement of airfoil surface aerodynamic and heat transfer performance in a single cooling effectiveness test and the refinement of the flow periodicity of both middle test vane and adjacent vanes. Airfoil mid-span surface isentropic Mach number was measured for vane with film cooling and non-film cooling for mass flow ratios in the range of 6.4%—10%, gas pressure ratios in the range of 1.28—2.08 and temperature ratios in the range of 1.5—2.3. The airfoil isentropic Mach number of design operating condition measured over the test vane in annular cascade sector compared very favorably with E3 high pressure turbine component test, with the difference less than 0.05. Isentropic Mach number of film cooled vane and non-film cooled vane also agreed well, with the difference of most region less than 0.03.

     

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