| A Computational Model for Two—stage 4K—Pulse Tube Cooler：part I.Theoretical Model and Numerical Method |
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| 引用本文： | Y.L. Ju A.T.A.M. de Waele Cryogenic Laboratory,Chinese Academy of Sciences,P.O. Box 2711,Beijing 100080,China Department of Applied Physics,Eindhoven University of Technology,P.O. Box 513,NL-5600 MB Eindhoven,the Netherlands. A Computational Model for Two—stage 4K—Pulse Tube Cooler：part I.Theoretical Model and Numerical Method[J]. 热科学学报(英文版), 2001, 10(4): 342-347. DOI: 10.1007/s11630-001-0042-5 |
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| 作者姓名： | Y.L. Ju A.T.A.M. de Waele Cryogenic Laboratory Chinese Academy of Sciences P.O. Box 2711 Beijing 100080 China Department of Applied Physics Eindhoven University of Technology P.O. Box 513 NL-5600 MB Eindhoven the Netherlands |
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| 作者单位： | Y.L. Ju A.T.A.M. de Waele Cryogenic Laboratory,Chinese Academy of Sciences,P.O. Box 2711,Beijing 100080,China Department of Applied Physics,Eindhoven University of Technology,P.O. Box 513,NL-5600 MB Eindhoven,the Netherlands |
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| 摘 要： | IntroduedonThe need for ctyogenic coOling of magnehcresonance imaging (MRI), superconduchng quantUminterfernce devices (SQUIDs) and the associatedsuperconduchng devices has brought about a strOngdemand for high reliability and efficiency in coolers.SWg and GM coolers, which are very compact andreliable machines and have already commercial products,are widely used for such aPplications in the last decades.However, they have a tnoving pistOn at the cold end,which caused evidenily mechotal …
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| 关 键 词： | 冷凝器 二阶脉冲管冷凝器 理论模型 数字计算 |
A computational model for two-stage 4K-pulse tube cooler: Part I. Theoretical model and numerical method |
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| Y. L. Ju,A. T. A. M. de Waele. A computational model for two-stage 4K-pulse tube cooler: Part I. Theoretical model and numerical method[J]. Journal of Thermal Science, 2001, 10(4): 342-347. DOI: 10.1007/s11630-001-0042-5 |
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| Authors: | Y. L. Ju A. T. A. M. de Waele |
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| Affiliation: | (1) Cryogenic Laboratory, Chinese Academy of Sciences, P.O. Box 2711, 100080 Beijing, China;(2) Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, the Netherlands |
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| Abstract: | A new mixed Eulerian-Lagrangian computational model for simulating and visualizing the internal processes and the variations of dynamic parameters of a two-stage pulse tube cooler (PTC) operating at 4 K-temperature region has been developed. We use the Lagrangian method, a set of moving grids, to follow the exact tracks of gas particles as they move with pressure oscillation in the pulse tube to avoid any numerical false diffusion. The Eulerian approach, a set of fixed computational grids, is used to simulate the variations of dynamic parameters in the regenerator. A variety of physical factors, such as real thermal properties of helium, multi-layered magnetic regenerative materials, pressure drop and heat transfer in the regenerator, and heat exchangers, are taken into account in this model. The present modeling is very effective for visualizing the internal physical processes in 4 K-pulse tube coolers. |
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| Keywords: | K-pulse tube cooler two-stage computational model. |
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