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Digitale Medien

Stationary transport with partially reflecting boundary conditions. II (1985)

Cole, R. G. ; Protopopescu, V. ; Keyes, T.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 83 (1985), S. 2384-2389

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Details

ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: We consider the stationary monoenergetic transport equation (the Lorentz model) in a semiinfinite geometry with most general nonmultiplying boundary conditions at the wall x=0, accounting for absorption, specular, diffuse, and "selective'' reflection, or combinations thereof. Performing the numerical study of a (partially) "thermalizing'' wall, we investigate the density profile n(x), the Milne extrapolation length xM, and the space dependent diffusion coefficient D(x) as functions of the accomodation and "selection'' coefficients. The inversed density profile (equivalent to a negative diffusion coefficient) is numerically computed. As a simple analytically solvable example, a discrete velocity model is discussed in the Appendix.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.449282

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