Abstract Two entire Inertance Tube Pulse Tube Refrigerator (ITPTR) systems operating under a variety of thermal boundary conditions were modeled using a Computational Fluid Dynamics (CFD) code. Each simulated ITPTRs included a compressor, an after cooler, a regenerator, a pulse tube, cold and hot heat exchangers, an inertance tube, and a reservoir. The simulations represented fully coupled systems operating in steady-periodic mode. The objectives were to ascertain the suitability of CFD methods for ITPTRs and to examine the extent of multidimensional flow effects in various ITPTR components. The results confirmed that CFD simulations are capable of elucidating complex periodic processes in ITPTRs. The results also showed that a one-dimensional modeling is appropriate only when all the components in the system have large length-to-diameter (L/D) ratios. Significant multi-dimensional flow effects occur at the vicinity of component-to-component junctions, and secondary-flow recirculation patterns develop when one or more components have small L/D ratios.
CFD Simulation of Multi-Dimensional Effects in an Inertance Tube Pulse Tube Refrigerator
Cryocoolers 13 ; 285-292
2005-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
Computational Fluid Dynamics , Computational Fluid Dynamics Simulation , Pulse Tube , Entropy Generation Rate , Computational Fluid Dynamics Package Physics , Extraterrestrial Physics, Space Sciences , Strongly Correlated Systems, Superconductivity , Optics, Optoelectronics, Plasmonics and Optical Devices , Imaging / Radiology , Automotive Engineering
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