Near-Free-Molecule Flow Calculations-Monte Carlo Study of Skimmer Interactions

Abstract

The Monte Carlo simulation method of G. A. Bird was applied to the study of flow through a skimmer using various geometries, speed ratios, and Knudsen numbers. The computer program followed a sample of 3500 hard sphere molecules, accumulating distribution function profiles in each of 25 regions of the flowfield, the beam profile at the downstream end of the flowfield, and the mass flow through the skimmer orifice. The results show beam intensities of the order of .3 of the no skimmer interaction value at Knudsen numbers of 01 and demonstrate clearly that most of the interaction occurs from 0 to 4 mean free paths upstream of the orifice.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1971
Accession Number
AD0744508

Entities

People

  • N. A. Derzko

Organizations

  • University of Toronto

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Computations
  • Computer Programs
  • Computers
  • Distribution Functions
  • Flow
  • Geometry
  • Intensity
  • Knudsen Number
  • Mass
  • Mass Flow
  • Mean Free Path
  • Molecules
  • Monte Carlo Method
  • Probability
  • Scientific Research
  • Simulations
  • Simulators

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Marine Ecotoxicology
  • Statistical inference.