A STUDY ON THE TURBULENT MIXING OF A CO-AXIAL ROUND JET CONSIDERING THE VARIATION OF THE EDDY REYNOLDS NUMBER

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概要

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• The turbulent mixing of a co-axial jet is studied theoretically and experimentally. The analysis is similar to that which one of the authors has ever performed for a plane jet. Namely, the variation of the mixing characteristics towards downstream from the nozzle exit is discussed from the viewpoint that the proportionality factor of Prandtl's hypothesis is equal to the reciprocal of the eddy Reynolds number based on Townsend's large-eddy hypothesis. It is found that the variation of the proportionalty factor depends not only on the excess-velocity ratio as in the case of the plane jet but also on the excess-velocity ratio at the nozzle exit. A good agreement is obtained between theory and experiment.

• 一般社団法人日本機械学会の論文

著者

• Izumi Ryotaro

  Professor

• KINOSHITA SHOJI

  Assistant, Faculty of Engineering, Nagoya University

• YAMAGUCHI SHIGEKI

  Professor, Nagoya Institute of Technology

• Yamaguchi Shigeki

  Professor

• Kinoshita Shoji

  Assistant Faculty Of Engineering Nagoya University

関連論文

• AN EXPERIMENTAL STUDY ON THE TURBULENCE CHARACTERISTICS OF A COAXIAL ROUND JET
• A STUDY ON THE TURBULENT MIXING OF A CO-AXIAL ROUND JET CONSIDERING THE VARIATION OF THE EDDY REYNOLDS NUMBER
• AN EXPERIMENTAL STUDY ON THE TURBULENCE CHARACTERISTICS OF AN OPPOSED JET ISSUED AGAINST A UNIFORM STREAM : MEASUREMENT OF TURBULENCE QUANTITIES WITH A SINGLE HOT WIRE
• An Analysis of Heat Exchanger Considering the Temperature Distribution Perpendicular to Heat Exchanger Surface
• Analysis of the Dynamic Characteristics of Cross-Flow Heat Exchangers with Both Fluids Unmixed : On the Transient Responses to a Step Change in the Inlet Temperature
• Performance of the Cross-Flow Heat Exchanger with Variable Physical Properties : 1st Report, In Case where the Overall Heat Transfer Coefficient Is Variable

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