A kinetic model of condensation in a free Argon expanding jet

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

Research output: Contribution to conferencePaperpeer-review


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 languageEnglish (US)
Number of pages22
StatePublished - 2005
Externally publishedYes
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005


Conference43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV

ASJC Scopus subject areas

  • General Engineering


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