Experiments were conducted to determine the turbulent heat transfer and flow characteristics of an oblique impinging circular jet within closely confined walls using air as a working fluid. The local temperature distribution on the impingement surface was obtained in detail by a thermocamera using a liquid crystal sheet. A correction to the heat flux was evaluated by using the detailed temperature distribution and solving numerically the three-dimensional equation of heat conduction in the heated section. Two-dimensional profiles of the local Nusselt numbers and temperatures changed with jet angle and Reynolds number. These showed a peak shift toward the minor flow region and a plateau of the local heat transfer coefficients in the major flow region. The local velocity and turbulent intensity in the gap between the confined insulated wall and impingement surface were also obtained in detail by a thermal anemometer.
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Heat Transfer and Flow Characteristics of an Oblique Turbulent Impinging Jet Within Confined Walls
K. Ichimiya
K. Ichimiya
Department of Mechanical System Engineering, Yamanashi University, Takeda-4, Kofu, Yamanashi, 400 Japan
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K. Ichimiya
Department of Mechanical System Engineering, Yamanashi University, Takeda-4, Kofu, Yamanashi, 400 Japan
J. Heat Transfer. May 1995, 117(2): 316-322 (7 pages)
Published Online: May 1, 1995
Article history
Received:
October 1, 1993
Revised:
April 1, 1994
Online:
December 5, 2007
Citation
Ichimiya, K. (May 1, 1995). "Heat Transfer and Flow Characteristics of an Oblique Turbulent Impinging Jet Within Confined Walls." ASME. J. Heat Transfer. May 1995; 117(2): 316–322. https://doi.org/10.1115/1.2822523
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