Kinetic study of the effects of boundary geometry on rarefied vapor flow

Karol Waichman

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The effect of boundary geometry on the properties of a rarefied vapor flow emerging from a narrow and infinitely long source was studied. The boundary consisted of walls, along both sides of the source which were parallel to the bulk velocity direction and of a collimator which plane was perpendicular to this direction. Two-dimensional numerical solutions for the flow field were obtained based on the Bhatnagar-Gross-Krook model. It was found that the rarefied flow is affected mainly by the size of the collimator aperture and by the walls separation. The streamwise length of the walls and the location of the collimator have a minor influence on the far field density.

Original languageEnglish
Pages (from-to)1321-1329
Number of pages9
JournalPhysics of Fluids
Issue number5
StatePublished - 1 Jan 1996
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


Dive into the research topics of 'Kinetic study of the effects of boundary geometry on rarefied vapor flow'. Together they form a unique fingerprint.

Cite this