Multidimensional numerical simulation of thermodynamic and oscillating gas flow processes of a Gifford-McMahon cryocooler

Panda, D and Satapathy, AK and Sarangi, SK and Behera, U (2023) Multidimensional numerical simulation of thermodynamic and oscillating gas flow processes of a Gifford-McMahon cryocooler. In: Journal of Non-Equilibrium Thermodynamics .

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Abstract

The Gifford-McMahon cryocoolers are considered to be prominent candidates for the cooling of high-temperature superconducting magnets, liquefaction of permanent gases, helium recondensation in magnetic resonance imaging machines, cooling of superconducting quantum interference device, etc. In this paper, multi-dimensional numerical simulation is performed to visualize the oscillating heat and fluid flow processes that happen in a mechanically driven GM cryocooler. Influence of the ideal gas equation and real gas equation of states on the cooling behaviour is explained. The minimum achievable refrigeration temperature of a uniform mesh regenerator is compared with a multi-mesh regenerator. It is noticed that a multi-mesh regenerator produces a lower refrigeration temperature as compared to a uniform mesh regenerator. In addition to this, a one-dimensional simulation is conducted and results are compared with multi-dimensional numerical simulation. The no-load temperature value calculated by the one-dimensional model and multi-dimensional model with ideal gas is lower than that of real gas equations. Additionally, the refrigerating capacity calculated by the one-dimensional model and multi-dimensional model with the ideal gas equation is higher than those of the real gas equation of state. © 2023 Walter de Gruyter GmbH, Berlin/Boston 2023.

Item Type:	Journal Article
Publication:	Journal of Non-Equilibrium Thermodynamics
Publisher:	Walter de Gruyter GmbH
Additional Information:	The copyright for this article belongs to Walter de Gruyter GmbH.
Keywords:	Computational fluid dynamics; Cryogenic equipment; Flow of gases; High temperature superconductors; Liquefied gases; Magnetic resonance imaging; Mesh generation; Numerical models; Quantum interference devices; Refrigerators; Regenerators; Superconducting magnets; Temperature; Thermoanalysis, Ansys fluent; CFD simulation;; CFD simulations; Cryocoolers; Dynamic meshing; Fluents; Real gas; Real gas equation;; Refrigeration cycles; Thermo dynamic analysis, Gases
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology
Date Deposited:	04 Mar 2024 09:37
Last Modified:	04 Mar 2024 09:37
URI:	https://eprints.iisc.ac.in/id/eprint/84372

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