A new weighting scheme approach for two-phase condensation modeling

Rakesh Kumar, D. A. Levin

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this work, we develop a new species weighting scheme to reduce the computational effort associated with the study of freely expanding homogeneous condensation flows. The present work is an extension of our previous work[Kumar et al., AIAA Paper 2010-818 (2010)], in which, we developed CO2 condensation models in the statistical BGK framework to simulate the experimental data [Ramos et al., Phys. Rev. A72, 3204 (2005)] for stagnation pressures up to 5 bar. The present work is aimed at the development of a numerically efficient numerical scheme that will extend the range of applicability of the present condensation models to the more challenging flow regimes of higher stagnation pressures. The accuracy and efficiency of the new species weighting factor method is compared with simulations performed without weighting factors. Numerical results are found to be in agreement, with the new approach shown to significantly reduce the computational effort.

Original languageEnglish (US)
Title of host publication27th International Symposium on Rarefied Gas Dynamics - 2010, RGD27
Number of pages6
EditionPART 1
StatePublished - 2011
Externally publishedYes
Event27th International Symposium on Rarefied Gas Dynamics, RGD27 - Pacific Grove, CA, United States
Duration: Jul 10 2011Jul 15 2011

Publication series

NameAIP Conference Proceedings
NumberPART 1
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other27th International Symposium on Rarefied Gas Dynamics, RGD27
Country/TerritoryUnited States
CityPacific Grove, CA


  • Condensing flow
  • Statistical BGK
  • Weighting scheme

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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