Comparison of MTK and MOLFLUX models for molecular transport among multiple surface nodes

Michael C. Fong; Aleck L. Lee; Chien W. Chang

doi:10.1117/12.328497

27 October 1998 Comparison of MTK and MOLFLUX models for molecular transport among multiple surface nodes

Michael C. Fong, Aleck L. Lee, Chien W. Chang

Proceedings Volume 3427, Optical Systems Contamination and Degradation; (1998) https://doi.org/10.1117/12.328497
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

This paper discusses a comparison of molecular transport predictions between the Molecular Transfer Kinetics (MTK) model based on Gebhart's enclosure theory for thermal radiation and the Molecular Flux (MOLFLUX) model based on the ray-tracing concept. The analysis has shown that the two molecular transport models are equivalent if the 'infinite number of molecular reflections' condition is imposed on MOLFLUX calculations. The general multi-node molecular transport expressions for MTK and MOLFLUX are derived, followed by proving hue MTK/MOLFLUX equivalence through comparisons of the MTK and MOLFLUX solutions for a two-node problem and a special three-node problem. Finally, the MTK/MOLFLUX equivalence is demonstrated by numerical solutions for a 169-node satellite configuration using the two models.

Citation Download Citation

Michael C. Fong, Aleck L. Lee, and Chien W. Chang "Comparison of MTK and MOLFLUX models for molecular transport among multiple surface nodes", Proc. SPIE 3427, Optical Systems Contamination and Degradation, (27 October 1998); https://doi.org/10.1117/12.328497

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