Comparison of molecular tagging velocimetry data and direct simulation Monte Carlo simulations in supersonic micro jet flows

W. R. Lempert, M. Boehm, N. Jiang, S. Gimelshein, D. Levin

Research output: Contribution to journalArticlepeer-review

Abstract

We present results of a combined experimental computational study of free jet flow produced by a 1 mm (height) × 5 mm (span) nominally Mach 2 supersonic jet. Two-dimensional maps of ux, the component of velocity parallel to the principal flow axis, are obtained experimentally, by acetone molecular tagging velocimetry (MTV), and computationally, by the direct simulation Monte Carlo (DSMC) method, at a stagnation pressure and temperature of 10 torr and 300 K, respectively. In all cases, direct comparison of the experimental data and the predictions from DSMC showed excellent agreement, with only minor deviations which, in most cases, can be ascribed to either the inherent uncertainty in the MTV or small uncertainties in the measured wall pressures.

Original languageEnglish (US)
Pages (from-to)403-411
Number of pages9
JournalExperiments in Fluids
Volume34
Issue number3
DOIs
StatePublished - Mar 2003
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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