Exact Solution of the Heat Transfer Problem for a Rotating Disk under Uniform Jet Impingement |
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Authors: | I. V. Shevchuk |
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Affiliation: | (1) Institute of Aerospace Engineering, Dresden University of Technology, 01062 Dresden, Germany;(2) Institute of Fluid Mechanics, Dresden University of Technology, 01062 Dresden, Germany |
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Abstract: | An exact solution of the heat transfer problem for a uniform air stream impinging on a rotating disk is found. By introducing self-similar radial velocity and temperature profiles, the problem is reduced to a system of ordinary differential equations which are solved numerically. The Nusselt numbers are calculated for Prandtl numbers equal to 1 and 0.71 and various ratios of the free-stream velocity to the disk rotation velocity. The limits of the flow regime in which the heat transfer is determined solely by the impact jet parameters are found. The results are compared with experimental data for the stagnation point. |
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Keywords: | heat transfer boundary layer impact jet rotating disk |
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