C105 HEAT/MASS TRANSFER OF ARRAY IMPINGING JETS WITH PROTRUDING EFFUSION HOLES EJECTING SPENT AIR

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概要

• 論文の詳細を見る

• Flow and heat/mass transfer characteristics for the array impinging jets with effusion holes are investigated and also the effects of the effusion hole depth on heat/mass transfer characteristics using protruding effusion holes are investigated. For these purposes, a naphthalene sublimation method is employed to determine local heat/mass transfer coefficients on the target surface using a heat and mass transfer analogy. A numerical analysis using a commercial program (FLUENT) is also performed to analyze the flow characteristics. For small gap distances, heat/mass transfer coefficients without effusion holes are very non-uniform due to the strong effects of crossflow and re-entrainments of spent air. However, more uniform and higher heat/mass transfer coefficients than those without effusion holes are obtained by installing the effusion holes. With protruding effusion holes, the overall heat/mass transfer characteristics are similar to those with the simple effusion holes. But the Sh values are slightly higher than those of simple effusion holes and the average Sh increases as increasing the length of the protruding effusion holes.

• 一般社団法人日本機械学会の論文

著者

• Hwang Sang

  Dept. of Electrical Engineering, Korea University

• Hwang Sang

  Dept. Of Mechanical Eng. Yonsei University

• Rhee Dong

  Dept. of Mechanical Eng., Yonsei University

• Yoon Pil

  Machinery Research Lab. LG Cable Inc.

• Cho Hyung

  Dept. of Mechanical Eng., Yonsei University

• Rhee Dong

  Dept. Of Mechanical Eng. Yonsei University

• Cho Hyung

  Dept. Of Mechanical Eng. Yonsei University

関連論文

• A pre-emphasis output buffer control scheme for a GDDR3 SDRAM interface
• C105 HEAT/MASS TRANSFER OF ARRAY IMPINGING JETS WITH PROTRUDING EFFUSION HOLES EJECTING SPENT AIR
• Heat Transfer Characteristics in Separated Flows Controlled by Acoustic Excitation

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