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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概要

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• 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.

• 宇宙航空研究開発機構の論文

著者

• Koura Katsuhisa

  Computational Science Research Group Institute Of Aerospace Technology Japan Aerospace Exploration A

• NAKAMURA Kinuyo

  Computational Science Research Group, Institute of Aerospace Technology, Japan Aerospace Exploration

• MIZOBUCHI Yasuhiro

  Computational Science Research Group, Institute of Aerospace Technology, Japan Aerospace Exploration

• Mizobuchi Yasuhiro

  Computational Science Research Group Institute Of Aerospace Technology Japan Aerospace Exploration A

• Nakamura Kinuyo

  Computational Science Research Group Institute Of Aerospace Technology Japan Aerospace Exploration A

関連論文

• 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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