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    Theoretical Analysis of a Pulse Tube Regenerator (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: A theoretical analysis of the behavior of a typical pulse tube regenerator has been carried out. Assuming simple sinusoidal oscillations, the static and oscillatory pressures, velocities and temperatures have been determined for a model that includes a compressible gas and imperfect thermal contact between the gas and the regenerator matrix. For realistic material parameters, the analysis reveals that the pressure and, velocity oscillations are largely independent of details of the thermal contact between the gas and the solid matrix. Only the temperature oscillations depend on this contact. Suggestions for optimizing the design of a regenerator are given.
    Keywords: Mechanical Engineering
    Type: 1995 Cryogenic Engineering Conference; Jul 17, 1995 - Jul 21, 1995; Columbus, OH; United States
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Useful Scaling Parameters for the Pulse Tube (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: A set of eight non-dimensional scaling parameters for use in evaluating the performance of Pulse Tube Refrigerators is presented. The parameters result after scaling the mass, momentum and energy conservation equations for an axisymmetric, two-dimensional system. The physical interpretation of the parameters are described, and their usefulness is outlined for the enthalpy flow tube (open tube of the pulse tube). The scaling parameters allow the experimentalist to characterize three types of transport: enthalpy flow, mass streaming and heat transfer between the gas and the tube. Also reported are the results from a flow visualization experiment in which steady mass streaming in compressible oscillating flow is observed.
    Keywords: Mechanical Engineering
    Type: Cryogenics Engineering Conference; Jul 17, 1995 - Jul 21, 1995; Columbus, OH; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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