Inertance Tube Modeling and the Effects of Temperature

Abstract

Pulse tube refrigerators (PTRs) have made dramatic improvements in reliability efficiency and usage. Inertance tube PTRs have been one of the keys to these improvements. The inertance tube is the component in the PTR that most easily affects the control of the PTR fluid dynamics. In one application in multistage cryocoolers, the performance of inertance tubes at the cryogenic temperatures is of interest. One purpose of this paper is to understand how temperature and the size of the reservoir influence the phase shift between mass flow rate and pressure at the inlet of the inertance tube. Various models including a two dimensional Computational Fluid Dynamics (CFD) will be compared to understand how these models can predict the phase shift and the acoustic power.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA575529

Entities

People

  • A. Razani
  • C. Dodson
  • Teryn R. Roberts

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Coefficients
  • Computational Fluid Dynamics
  • Conductivity
  • Cryopumping
  • Flow
  • Flow Rate
  • Fluid Dynamics
  • Fluid Flow
  • Heat Energy
  • Heat Exchangers
  • Heat Transfer
  • Mass
  • Mass Flow
  • Phase Shift
  • Physics
  • Reservoirs
  • Thermal Conductivity

Fields of Study

  • Engineering
  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Fluid Dynamics.
  • Medical or Health Care Field.