Experimental and Computational Observation of Radiometric Forces on a Plate (Postprint)

Abstract

The radiometric force on several configurations of heated plates placed in a stagnant gas is examined experimentally on a high resolution thrust stand and numerically using the direct simulation Monte Carlo method. A wide range of pressures from 0.006Pa to 6Pa corresponding to Knudsen numbers from 20 to 0.02 is examined for nitrogen, argon, xenon, and helium test gases. It is shown that the force is maximum in the transition regime (Kn~0.1) and is heavily dependent on the plate area. It is also shown that the force is strongly correlated with the chamber size, decreasing with increasing chamber size.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 2007
Accession Number
ADA473688

Entities

People

  • A. Ketsdever
  • C. Ngalande
  • N. Selden
  • S. Gimelshein

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Astronautics
  • Experimental Data
  • Flow
  • Gas Flow
  • Geometry
  • High Resolution
  • Knudsen Number
  • Mean Free Path
  • Measurement
  • Monte Carlo Method
  • Nitrogen
  • Pressure Distribution
  • Pressure Measurement
  • Simulations
  • Temperature Gradients
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerospace Propulsion Engineering.
  • Combustion science or combustion engineering.
  • Materials Science (Mechanical Engineering).