AN EXPERIMENTAL STUDY ON THE TURBULENCE CHARACTERISTICS OF A COAXIAL ROUND JET

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概要

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• The turbulence characteristics of a coaxial round jet are studied experimentally. Measurement is made of the turbulence intensities and Reynolds shear stress for various excess-velocity ratios. The investigation is performed considering that the character of the jet varies towards downstream. It is found that the self-preservation does not apply for this flow field. The turbulence structure varies gradually with a progressing homogeneity of the intensity to the downstream and approaches asymptotically to an axisymmetric wake. The process of variation depends strongly on the initial condition and on the local excess-velocity ratio. Experimental results confirm the theoretical assumption which the authors made in the previous paper.

• 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

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• 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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