IGTC-84 Hot-Wire Techniques Evaluated in the Wake of a 2-D Supersonic Compressor Cascade(Session D-6 MEASUREMENT TECHNIQUE)

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概要

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• The performance of hot-wire anemometry in supersonic flow was re-examined. In supersonic flow, the hot-wire is sensitive to mass flux and total temperature, and at least three wire temperatures are needed to resolve the turbulence information. Many workers operate the hot-wire at the highest possible temperature, thus minimizing the total temperature sensitivity. Therefore, the total temperature terms are neglected. The present study found that if the ratio of total temperature turbulence intensity to the mass flux turbulence intensity is greater than about 30%, the errors become significant in estimating the mass flux turbulence intensity. Therefore, a correction technique was developed which reduced the errors by about 85%. The data were acquired in the wake of a 2-D supersonic compressor cascade. The freestream Mach number was M=2.4.Pt_∞ and Pt_∞ were 4.5atm and 290K, respectively. The Re/cm was 4×10^5.

• 公益社団法人日本ガスタービン学会の論文

著者

• Ng W.

  Virginia Polytechnic Institute And State University

• Bowersox R.

  Virginia Polytechnic Institute and State University

• Schetz J.

  Virginia Polytechnic Institute and State University

関連論文

• IGTC-84 Hot-Wire Techniques Evaluated in the Wake of a 2-D Supersonic Compressor Cascade(Session D-6 MEASUREMENT TECHNIQUE)

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