Thermo-Fluid Mechanic Study of Thermoacoustic Devices

Abstract

The work is articulated in three separate projects: (a) development and study of a simplified model of thermoacoustic devices; (b) visualization of oscillating temperature and flow fields; (c) numerical modeling. During the past year, in area (a), work has focused on an approximate time-domain formulation of the thermoacoustic instability and on the heat and momentum exchange modeling; in area (b), heat transfer data have been obtained by holographic interferometry and a new thermoacoustic refrigerator suitable for further experimentation has been designed; in area (c) thermal stratification effects have been fully incorporated in a new algorithm with results that are significantly different from the linear theory and compare very well with data.

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1997
Accession Number
ADA329588

Entities

People

  • A. Prosperetti
  • C. Herman
  • O. Knio

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Algorithms
  • Boundary Layer
  • Engineering
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Heat Exchangers
  • Heat Transfer
  • Interferometry
  • Isotherms
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Molecular Dynamics
  • Physics Laboratories
  • Simulations
  • Time Domain

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)
  • Thermal Physics or Thermal Science.