Volume 30 Issue 11
Nov.  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(11): 2623-2629
CHEN Hao, DENG Hong-wu, CHENG Jun-hua, LI Yang, TIAN Shu-qing. Realization and verification of the flow characteristic experiment in rotating two-pass square duct with smooth walls[J]. Journal of Aerospace Power, 2015, 30(11): 2623-2629. doi: 10.13224/j.cnki.jasp.2015.11.009
Citation: CHEN Hao, DENG Hong-wu, CHENG Jun-hua, LI Yang, TIAN Shu-qing. Realization and verification of the flow characteristic experiment in rotating two-pass square duct with smooth walls[J]. Journal of Aerospace Power, 2015, 30(11): 2623-2629. doi: 10.13224/j.cnki.jasp.2015.11.009
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Realization and verification of the flow characteristic experiment in rotating two-pass square duct with smooth walls

doi: 10.13224/j.cnki.jasp.2015.11.009

  • 1. National Key Laboratory of Science and Technology on Aero-EngineAero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. China Aviation Powerplant Research Institute, Aviation Industry Corporation of China, Zhuzhou Hunan 412002, China;

  • 3. Research and Developing Center, Commercial Aircraft Engine Company Limited, Aviation Industry Corporation of China, Shanghai 201108, China;

  • 4. Collaborative Innovation Center for Advanced Aero-Engine, Beijing 100191, China

  • Received Date: 2014-04-16
  • Publish Date: 2015-11-28
    Abstract
  • In order to investigate the pressure and flow characteristics of the rotating channels, a new measurement system was invested and implemented in National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics of Beijing University of Aeronautics and Astronautics. The new measurement system with high measurement accuracy and plural air channels could reach high Rotation numbers by increasing the back pressure of test section. The Reynolds and Rotation numbers ranged from 20000 to 70000 and 0 to 1.025 respectively. The investigation used different temperature ratio conditions to investigate the pressure and flow characteristics of the rotating two-pass square duct with smooth walls. The results proved the reliability and superiority of the measurement system by comparing with similar experiments in foreign countries. The result showed that the static flow resistance increased with the increasing Reynold number, and decreased when the Reynold number was high enough. In cold conditions, the flow resistance increased with the increasing Rotation number. In thermal state, the flow resistance showed no obvious change in low Rotation number, and increased significantly with the increasing Rotation number in high Rotation number.

     

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