Examination of a collision-limiter direct simulation Monte Carlo method for micropropulsion applications

E. Titov, A. Gallagher-Rogers, D. Levin, Brian Reed

Research output: Contribution to journalArticle

Abstract

A wide range of flow regimes occur in micronozzles, from the transitional to the continuum regime, which prevents the use of a single computational method such as direct simulation Monte Carlo or computational fluid dynamics and Navier-Stokes, A collision-limiter approach is proposed that extends the applicability of direct simulation Monte Carlo to the continuum regime and can be used to solve a wide range of microelectromechanical system flows when it is coupled with the baseline direct simulation Monte Carlo. A comparison of the results obtained with this computational technique with new experimental data and Navier-Stokes results suggests consistency between experimental and computational methods for three-dimensional microelectromechanical system micronozzles with stagnation pressures on the order of 5 atm. However, the level of agreement was found to vary with the nozzle geometry, suggesting that additional research is needed for both computations and experiments in this flow regime.

Original languageEnglish (US)
Pages (from-to)311-321
Number of pages11
JournalJournal of Propulsion and Power
Volume24
Issue number2
DOIs
StatePublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science

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