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国际计算热科学期刊
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN 打印: 1940-2503
ISSN 在线: 1940-2554

国际计算热科学期刊

DOI: 10.1615/ComputThermalScien.2011003213
pages 521-530

SIMULTANEOUS CONTROL OF FRICTION DRAG REDUCTION AND HEAT TRANSFER AUGMENTATION BY TRAVELING WAVE-LIKE BLOWING/SUCTION

Kosuke Higashi
Department of Mechanical Engineering, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522,Japan
Hiroya Mamori
Department of Mechanical Engineering, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522,Japan; Department of Mechanical Systems Engineering Tokyo University of Agriculture and Technology 2-24-16 Koganei City Naka Town Tokyo; Tokyo University of Science,6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
Koji Fukagata
Department of Mechanical Engineering, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522,Japan

ABSTRACT

The possibility of simultaneous control of skin-friction drag reduction and heat transfer augmentation by traveling wave-like blowing/suction is explored for laminar channel flow. In addition to the constant temperature difference condition, uniform heat generation is considered for the temperature field so that the boundary condition similar to that in a velocity field holds. Friction drag reduction and heat transfer augmentation are simultaneously achieved when the wave travels in the upstream direction. The global phases of streamwise velocity and temperature fluctuations are found to oppose each other, which eventually leads to dissimilarity between the friction drag and heat transfer. Direct numerical simulation confirms that this dissimilar control effect also can be obtained in a turbulent channel flow.


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