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Volume 31 Issue 04
Apr.  2005
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Journal of Beijing University of Aeronautics and Astronautics  > 2005  >  31(04): 385-388.
Zhang Chong, Luo Xiang, Xu Guoqiang, et al. Experimental study of static pressure characteristics at stator surface in a rotor-stator disk cavity[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(04): 385-388. (in Chinese)
Citation: Zhang Chong, Luo Xiang, Xu Guoqiang, et al. Experimental study of static pressure characteristics at stator surface in a rotor-stator disk cavity[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(04): 385-388. (in Chinese)
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Experimental study of static pressure characteristics at stator surface in a rotor-stator disk cavity

  • School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 12 Nov 2003
  • Publish Date: 30 Apr 2005
    Abstract
  • Radial distribution of the static pressure at stator surface was measured in a rotor-stator disk cavity with centric inflow and two outflows. Cooling air enters at the center of the system and leaves through the holes in the rotor and clearance between rotor and shroud. The influences of disk rotational speed, mass flow rate of inlet and presence of the blade-cooling holes on the flow characteristics in the cavity were investigated. Results show that, within the ranges of the experiments, the static pressure on the stator firstly decreases and then increases along the radial direction. Static pressure is also increasing with the cooling air flow rate, but decreasing as the disk rotational speed and the numbers of blade-cooling holes increase. When the cooling air flow rate is greater, there is no an obvious core fluid rotation formed in the cavity.

     

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  • [1] havnani S H, Khodadadi J M, Goodling J S, et al. An experimental study of fluid flow in disk cavities [J]. Journal of Turbomachinery, 1992, 114 (2):454~461 [2] Roy R P, Xu G, Feng J. Study of main-stream gas ingestion in a rotor-stator disk cavity . AIAA 2000-3372, 2000 [3] Khilnani V I, Bhavnani S H. Sealing of gas turbine disk cavities operating in the presence of mainstream external flow [J]. Experimental Thermal and Fluid Science, 2001, 25 (3,4):163~173 [4] Gentilhomme O, Hills H J, Turner A B, et al. Measurement and analysis of ingestion through a turbine rim seal [J]. Journal of Turbomachinery, 2003, 125(3):505~512 [5] Owen J M, Phadke U P. An investigation of ingress for an air-cooled shrouded rotating disk system with radial-clearance seals [J]. Journal of Engineering for Power, Transactions ASME, 1983, 105 (1):178~183 [6] Owen J M. Air-cooled gas-turbine discs:a review of recent research .International Journal of Heat and Fluid Flow, 1988, 9 (4):354~365
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