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Two dimensional oscillatory flow analysis in the pulse tubes

Saidi, M. H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2008-68428
  3. Publisher: 2009
  4. Abstract:
  5. Recently a great attention has been given to the oscillatory flow modeling in the pulse tube cryocoolers. In this paper multi dimensioning effects of the fluid flow in the pulse tube are investigated. A complete system of governing equations is solved to report the flow field, friction coefficient and Nusselt number in the pulse tube. Harmonic approximation technique is employed to derive an analytical solution. In this respect, mass, momentum and energy balance equations as well as the equation of state for ideal gas are transformed by implementing the harmonic approximation technique. The present model is able to predict the behavior of the two dimensional compressible oscillatory flow in the tube section of the regenerative cryocoolers. Based on the proposed analytical model, friction coefficient and complex Nusselt number is reported. Copyright © 2008 by ASME
  6. Keywords:
  7. Friction coefficient ; Nusselt number ; Oscillatory flow ; Pulse tube ; Analytical model ; Analytical solutions ; Complete system ; Cryocoolers ; Energy balance equations ; Equation of state ; Fluid flow ; Friction coefficient ; Governing equations ; Harmonic approximation ; Ideal gas ; Oscillatory flows ; Pulse tube ; Pulse tube cryocoolers ; Pulse tubes ; Computational fluid dynamics ; Cooling ; Cryogenic equipment ; Cryogenics ; Equations of state of gases ; Friction ; Mechanical engineering ; Tribology ; Tubes (components) ; Two dimensional ; Flow of fluids
  8. Source: 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008, Boston, MA, 31 October 2008 through 6 November 2008 ; Volume 10, Issue PART A , 2009 , Pages 685-690 ; 9780791848715 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2008/48715/685/332159