Accession Number : AD1046037


Title :   Direct Simulation Monte Carlo Application of the Three Dimensional Forced Harmonic Oscillator Model


Descriptive Note : Journal Article - Open Access


Corporate Author : Air Force Research Laboratory (AFMC) AFRL/RQRC Edwards AFB United States


Personal Author(s) : Gimelshein, Sergey F ; Wysong,Ingrid J ; Adamovich,Igor V


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1046037.pdf


Report Date : 07 Dec 2017


Pagination or Media Count : 11


Abstract : An implementation of the three-dimensional forced harmonic oscillator model of vibration translation energy transfer in atom-diatom and diatom-diatom collisions is proposed. The implementation employs precalculated lookup tables for transition probabilities and is suitable for the direct simulation Monte Carlo method. It takes into account the microscopic reversibility between the excitation and deexcitation processes, and it satisfies the detailed balance requirement at equilibrium. The implementation is verified for oxygen and nitrogen thermal heat baths and validated for aftershock relaxation of oxygen in argon. Comparison with the one-dimensional forced harmonic oscillator model shows large differences in macroparameters for high-temperature bath relaxation and moderate-to-large differences in realistic oxygen shock conditions.


Descriptors :   Oscillators , simulation , monte carlo method , MOLECULE MOLECULE INTERACTIONS , energy transfer


Subject Categories : Electrical and Electronic Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE