Kinetic model of condensation in a free argon expanding jet

Jiaqiang Zhong; Michael I. Zeifman; Deborah A. Levin

doi:10.2514/1.15868

Kinetic model of condensation in a free argon expanding jet

Jiaqiang Zhong, Michael I. Zeifman, Deborah A. Levin

Research output: Contribution to journal › Article › peer-review

Abstract

The direct-simulation Monte Carlo (DSMC) method has recently been developed to simulate homogeneous condensation in a free-expansion rocket plume. However, cluster-monomer and cluster-cluster collision models as well as the determination of cluster size were simplified in the previous work, and the effect on the accuracy of the numerical simulation results was not quantified. In this work, the molecular-dynamics (MD) method is used to simulate collision and sticking probabilities for argon clusters and the results are compared with the hard-sphere model. These improved models are then integrated into a DSMC code to predict the Rayleigh scattering intensity in a free-expanding argon condensation plume, and numerical results are compared with experimental data along the plume centerline.

Original language	English (US)
Pages (from-to)	41-51
Number of pages	11
Journal	Journal of thermophysics and heat transfer
Volume	20
Issue number	1
DOIs	https://doi.org/10.2514/1.15868
State	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes
Space and Planetary Science

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10.2514/1.15868

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abstract = "The direct-simulation Monte Carlo (DSMC) method has recently been developed to simulate homogeneous condensation in a free-expansion rocket plume. However, cluster-monomer and cluster-cluster collision models as well as the determination of cluster size were simplified in the previous work, and the effect on the accuracy of the numerical simulation results was not quantified. In this work, the molecular-dynamics (MD) method is used to simulate collision and sticking probabilities for argon clusters and the results are compared with the hard-sphere model. These improved models are then integrated into a DSMC code to predict the Rayleigh scattering intensity in a free-expanding argon condensation plume, and numerical results are compared with experimental data along the plume centerline.",

author = "Jiaqiang Zhong and Zeifman, {Michael I.} and Levin, {Deborah A.}",

note = "Funding Information: This work was supported by Air Force Office of Scientific Research Grant No. F49620-02-1-0104 administered by Mitat Birkan and Army Research Office Grant No. DAAD19-02-1-0196 administered by David Mann.",

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AU - Levin, Deborah A.

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Kinetic model of condensation in a free argon expanding jet

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