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Experiment on the secondary flow of a large turn angle turbine stator with a rotating single slanted hotwire

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Abstract

Experiment measurement is adapted to study the secondary flow of turbine. The subsonic stator experiment flow tunnel is set up. Two different inlet velocities and three different stator heights are applied. The method of a rotating slanted hotwire is introduced to measure the stator outlet three-dimensional flow field. The procedure for solving the mean three-dimensional velocity component involving the least-squares technique can be accomplished via the LSQNONLIN optimization function of Matlab. Under different work conditions, the stator outlet secondary flow is more intense at higher inlet flux. Moreover, the shortest stator height will lead to the most intense secondary flow, which gains the largest axial velocity component (w) and radial velocity component (u), but the smallest circumferential velocity component (v).

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Authors and Affiliations

  1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

    Jun Li  (李 军) & Ming Su  (苏 明)

Authors
  1. Jun Li  (李 军)
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  2. Ming Su  (苏 明)
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Correspondence to Jun Li  (李 军).

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Li, J., Su, M. Experiment on the secondary flow of a large turn angle turbine stator with a rotating single slanted hotwire. J. Shanghai Jiaotong Univ. (Sci.) 14, 64–68 (2009). https://doi.org/10.1007/s12204-009-0064-9

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  • DOI: https://doi.org/10.1007/s12204-009-0064-9

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