C303 ENCLOSED CONVECTION WITH INTERNAL HEAT GENERATION UNDER OSCILLATING BOUNDARY WALL(Mixed convection)
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概要
- 論文の詳細を見る
Numerical studies are made of buoyant convection in a square cavity with uniformly-distributed internal heat generation q_0". Unsteady motions are generated by imposing oscillatory disturbances at the boundary walls. The two horizontal endwalls are thermally insulated, and the temperature at each sidewall is maintained to be constant. The Rayleigh number based on q_0" is large, and the Prandtl number is 7.0. The non-dimensional amplitude of the wall oscillation is of the same order-of-magnitude as the maximum velocity scale in the flow field of the basic state. Comprehensive numerical solutions to the time-dependent Navier-Stokes equations are acquired for three cases of oscillating boundary wall. The results disclose that the amplitude of the oscillating Nusselt number at the vertical centerline shows a sharp peak at the resonance frequency. Of particular interest is the effectiveness of the oscillation of boundary wall. Details of evolutionary flow and temperature fields are depicted at the resonance frequency.
- 一般社団法人日本機械学会の論文
- 2000-10-01
著者
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KIM Gi
Department of Marine Environmental Engineering, Marine Industry Institute, Gyeongsang National Unive
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Kim Sung
Department of Bioengineering and Technology, College of Engineering, Kangwon National University
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Kim Sung
Department Of Anatomy
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HYUN Jae
Department of Chemical and Biological Engineering, Korea University
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Kim Gi
Department Of Electrical Engineering Faculty Of Engineering Osaka University
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Hyun Jae
Department Of Chemical And Biological Engineering Korea University
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Kim Sung
Department Of Mechanical Engineering Korea Advanced Institute Of Science & Technology
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Kim Gi
Department Of Mechanical Engineering Korea Advanced Institute Of Science & Technology
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Kim Sung
Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of Korea
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