Minimising flow losses within the pulse tube of a Stirling pulse tube cryocooler
Minimising flow losses within the pulse tube of a Stirling pulse tube cryocooler
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DOI：
10.1088/1757-899x/502/1/012044
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
M. A. Abolghasemi;R. Stone;M. Dadd;P. Bailey;K. Liang
中科院分区：
文献类型：
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作者：
M. A. Abolghasemi;R. Stone;M. Dadd;P. Bailey;K. Liang
斯特林脉冲管制冷机的成功运行依赖于尽量减少脉冲管内的流动混合。因此，脉冲管和两端的流动矫直器的设计必须非常小心。本文对现有斯特林脉冲管制冷机脉冲管内的流动进行了数值分析，并提出了流动矫直器的设计方案。采用有限体积Navier-Stokes求解器CONVERGE CFD进行了数值模拟。标准的k-ε RANS湍流模型被用来解释脉冲管内湍流的影响。
Successful operation of Stirling pulse tube cryocoolers relies on minimising flow mixing within the pulse tube. Hence, the pulse tube and the flow straighteners at either end must be designed with great care. In this study, the flow within the pulse tube of an existing Stirling pulse tube cryocooler is numerically analysed and alternative flow straightener designs are suggested. The numerical simulation have been carried out using CONVERGE CFD, a finite volume Navier-Stokes solver. The standard k-ε RANS turbulence model has been used to account for the effects of turbulence within the pulse tube.