Direct simulation Monte Carlo study of rotational relaxation of nitrogen using classical trajectory calculations and modified statistical inelastic cross-section model
利用統計を見る
nitrogen, rotational relaxation, molecular excitation, molecular dynamics, direct numerical simulation, Monte Carlo method, normal shock wave, inelastic collision, Boltzmann distribution
Japan Aerospace Exploration Agency Institute of Aerospace Technology
Japan Aerospace Exploration Agency Institute of Aerospace Technology
Japan Aerospace Exploration Agency Institute of Aerospace Technology
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発報告
雑誌名(英)
JAXA Research and Development Report
巻
JAXA-RR-07-001E
発行年
2007-07-31
抄録（英）
Direct Simulation Monte Carlo (DSMC) calculations of the rotational relaxation of nitrogen in an isothermal bath and through a normal shock wave are performed using Classical Trajectory Calculations (CTC) and an improved intermolecular potential in order to make a physically accurate database for the assessment and improvement of DSMC rotational relaxation models. The Statistical Inelastic Cross-Section (SICS) model is modified by taking the total scattering cross section as the Variable Soft Sphere (VSS) cross section and calibrated so that the rotational temperature relaxation in an isothermal bath compares reasonably with the CTC-DSMC data over an appropriate range of bath temperatures. The Modified SICS (MSICS) model is applied to the DSMC calculation of the rotational relaxation of nitrogen through a normal shock wave. Comparisons of the MSICS results with the CTC-DSMC data and experimental measurements indicate that the MSICS model improves the physical accuracy of the SICS model.
Direct simulation Monte Carlo study of rotational relaxation of nitrogen using classical trajectory calculations and modified statistical inelastic cross-section model
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