A kinetic model of condensation in a free Argon expanding jet

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

doi:10.2514/6.2005-767

A kinetic model of condensation in a free Argon expanding jet

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

Research output: Contribution to conference › Paper › 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 which may greatly impact the accuracy of numerical simulation results. In this work, the molecular dynamics (MD) method is used to simulate collision and sticking probability for Ar clusters. The Ashrigz-Poo model is used to predict the outcome of cluster-cluster collisions. 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	3063-3084
Number of pages	22
DOIs	https://doi.org/10.2514/6.2005-767
State	Published - 2005
Externally published	Yes
Event	43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 10 2005 → Jan 13 2005

Conference

Conference	43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/Territory	United States
City	Reno, NV
Period	1/10/05 → 1/13/05

ASJC Scopus subject areas

General Engineering

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10.2514/6.2005-767

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AU - Zeifman, Michael I.

AU - Levin, Deborah A.

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AB - 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 which may greatly impact the accuracy of numerical simulation results. In this work, the molecular dynamics (MD) method is used to simulate collision and sticking probability for Ar clusters. The Ashrigz-Poo model is used to predict the outcome of cluster-cluster collisions. 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.

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A kinetic model of condensation in a free Argon expanding jet

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