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: http://num-meth.srcc.msu.ru/english/zhurnal/tom_2014/v15r147.html
Дата изменения: Mon Sep 22 20:11:40 2014 Дата индексирования: Sun Apr 10 03:05:49 2016 Кодировка: IBM-866 |
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"VV-exchange in direct Monte Carlo simulation of rarefied gas flows" Bondar Ye.A., Gimelshein S.F., Molchanova A.N., and Ivanov M.S. |
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A question of modeling of vibration-vibration (VV) exchange in calculation of rarefied gas flows by the direct simulation Monte Carlo method is considered. Two simple models for VV-exchange in collisions of simple harmonic oscillator molecules are proposed: a model with single-quantum transitions and an extension of the Larsen-Borgnakke model used widely for RT- and VT-exchange. Computation of vibrational relaxation is performed for homogeneous test conditions and for the conditions of an experiment on vibrational population evolution in nitrogen excited vibrationally by a laser. The numerical results obtained are in good agreement with experimental data. Keywords: direct simulation Monte Carlo method, VV-exchange, RT-exchange, VT-exchange, Larsen-Borgnakke model.
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