Measurement of Heat Transfer Coefficients for Axial Air Flow through Eccentric Annulus and Seven-Rod Cluster
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概要
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The heat transfer characteristics of non-concentric annuli with various eccentricities and also of a seven-rod cluster were experimentally determined by means of mass transfer technique. A coating of naphthalene was applied to the surface of the test rod and changes in its thickness measured. The mass transfer coefficients have been represented in terms of Colburn's <I>j</I>-factor, with which both the average and local values were analyzed. The measured average heat trans-fer <I>j</I>-factors were found to be in part equal to those for smooth round ducts, but the circumfer-ential variations of the local factors for the eccentric annulus did not agree with the theoretical prediction proposed by Dwyer & Yu. The existence of secondary flow in the seven-rod cluster is also discussed.
- 一般社団法人 日本原子力学会の論文
著者
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Oyama Akira
Department Of Space Transportation Engineering Institute Of Space And Astronautical Science Japan Ae
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Kondo Shunsuke
Department Of Applied Chemistry Graduate School Of Engineering Nagoya University
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AKIYAMA Mamoru
Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo
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AKIYAMA Mamoru
Department of Nuclear Engineering, University of Tokyo
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TACHIBANA Fujio
Department of Nuclear Engineering, University of Tokyo
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TACHIBANA Fujio
Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo
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OYAMA Akira
Department of Nuclear Engineering, Faculty of Engineering,the University of Tokyo
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OYAMA Akira
Department of Nuclear Engineering, University of Tokyo
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