Cooling of a heated flat plate by an obliquely impinging slot jet |
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| Affiliation: | 1. Young Researchers and Elite Club, Saveh Branch, Islamic Azad University, Saveh, Iran;2. Department of Mechanical Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran;3. Mechanical Engineering Department, Amirkabir University of Technology, 424 Hafez Avenue, Tehran, Iran;4. Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai, China;5. ENN-Tongji Clean Energy Institute of Advanced Studies, Shanghai, China;1. Department of Chemical Engineering, IIT Kharagpur, 721302, India;2. Department of Mechanical Engineering, IIT Kharagpur, 721302, India;1. School of Architecture, Harbin Institute of Technology, Harbin 150090, China;2. Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China;3. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;1. Graduate school of Science and Technology, Saga Univerdity, 1 Honjo-machi, Saga-shi, Saga 840-8502, Japan;2. Institute of Ocean Engergy, Saga Univerdity, 1 Honjo-machi, Saga-shi, Saga 840-8502, Japan;3. Department of Mechanical Engineering, Bangladesh University of Engineering & Technology, Dhaka 1000, Bangladesh;4. International Research Center for Hydrogen Energy, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0935, Japan |
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| Abstract: | Experiments were conducted to determine the effects of some parameters that were crucial in the cooling of a heated flat plate by an obliquely impinging slot jet. The inclination of the jet relative to the surface was varied from 90° to 30° (90°, 60°, 45° and 30°). For Reynolds number of 5860, 8879, and 11606, the variation of local temperatures with respect to dimensionless length (z/L), were investigated. New correlations for local temperatures in terms of Reynolds number, dimensionless distance (z/L) and oblique angle (sinϕ) were developed. The displacement region of maximum heat transfer (minimum temperature point) on the plate was measured with respect to geometrical impingement point. Results of experiments indicated that for a given position this displacement increases with increasing the inclination, and the displacement was occurred on compression side of plate. |
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