Radiative heat transfer in finite cylindrical homogeneous and nonhomogeneous scattering media exposed to collimated radiation
- Florida Inst. of Tech., Melbourne, FL (United States)
- National Cheng Kung Univ., Tainan (Taiwan, Province of China). Dept. of Mechanical Engineering
In recent years, many thermal engineering applications, for example, combustor and furnace designs, heat transfer in propellant plumes, thermal insulation, and scattering vapor formed by laser irradiation, require better understanding of radiative heat transfer to improve the processes or designs. Here, radiative heat transfer is studied in a finite axisymmetrical cylindrical enclosure exposed to collimated radiation. The integral equations for radiative transfer are solved by the YIX method and the quadrature method for comparison. Integrated intensity and radiative heat flux are presented in homogeneous and nonhomogeneous scattering media exposed to both uniform and Gaussian distributions of normal collimated incident radiation. The effects of aspect ratio, different incident radiation, and anisotropic scattering phase function as well as nonhomogeneous property distribution are discussed. Ray effects appear in the YIX solution for the case of a nonhomogeneous step change in the extinction coefficient. In order to eliminate the ray effect, an adaptive angular quadrature scheme is described and applied.
- OSTI ID:
- 355630
- Journal Information:
- Numerical Heat Transfer. Part A, Applications, Vol. 35, Issue 6; Other Information: PBD: 14 May 1999
- Country of Publication:
- United States
- Language:
- English
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