TECHNICAL PAPERS: Radiative Heat Transfer

Infinitesimal-Area Radiative Analysis Using Parametric Surface Representation, Through NURBS

[+] Author and Article Information
K. J. Daun, K. G. T. Hollands

University of Waterloo, Department of Mechanical Engineering, Waterloo, Ontario, Canada N2L 3G1

J. Heat Transfer 123(2), 249-256 (Oct 03, 2000) (8 pages) doi:10.1115/1.1351168 History: Received November 08, 1999; Revised October 03, 2000
Copyright © 2001 by ASME
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Treatment of enclosures with obstructions 21: (a) an enclosure with an obstruction; (b) surfaces are initially split to form sub-surfaces (a trapezoidal prism is constructed around each subsurface); (c) each trapezoidal prism is checked for ray intersection; (d) if a ray intersects a trapezoidal prism, the corresponding sub-surface is checked for ray intersection by finding u* through Newton iteration
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Parametric representation of an enclosure surface
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Geometry between two-infinitesimal areas
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Quarter cylinder representation in NURBS
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Isothermal, cylindrical enclosure analyzed by Sparrow et al. 8
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Heated cylinder with end walls at 0 [K], Usiskin and Siegel 9
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Adiabatic cylinder with end walls of different temperature, Usiskin and Siegel 9
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Enclosure treated by Hottel and Keller 6
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Grid refinement study for the problem of Fig. 8




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