Shear Force in Radiometric Flows

Abstract

The impact of the radiometer vane thickness and edge geometrical shape on the total radiometric force is examined numerically solving the ES BGK model kinetic equation. The flow of argon over a single vane and a multi-vane configurations is considered in the range of Knudsen numbers from 0.02 to 1. The shear force is found to reduce the total radiometric force for most vane configurations. It is shown that the change in the vane shape may offset the losses due to the shear force in the multi-vane geometry.

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Document Details

Document Type
Technical Report
Publication Date
Jun 16, 2010
Accession Number
ADA524438

Entities

People

  • Andrew D. Ketsdever
  • Natalia E. Gimelshein
  • Nathaniel P. Selden
  • Sergey F. Gimelshein

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Boltzmann Equation
  • Computational Fluid Dynamics
  • Computational Science
  • Equations
  • Flow
  • Gas Flow
  • Gases
  • Geometry
  • Kinetic Theory
  • Knudsen Number
  • Monte Carlo Method
  • Numerical Analysis
  • Radiometers
  • Temperature Gradients
  • Thickness

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Fluid Dynamics.