• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Cryogenics >CFD modeling and experimental verification of oscillating flow and heat transfer processes in the micro coaxial Stirling-type pulse tube cryocooler operating at 90-170 Hz
【24h】

CFD modeling and experimental verification of oscillating flow and heat transfer processes in the micro coaxial Stirling-type pulse tube cryocooler operating at 90-170 Hz

机译：CFD建模与实验验证在90-170Hz的微观同轴级瓣型脉冲管冷凝器中的振荡流动和传热过程

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents the CFD modeling and experimental verifications of oscillating flow and heat transfer processes in the micro coaxial Stirling-type pulse tube cryocooler (MCSPTC) operating at 90-170 Hz. It uses neither double-inlet nor multi-bypass while the inertance tube with a gas reservoir becomes the only phase shifter. The effects of the frequency on flow and heat transfer processes in the pulse tube are investigated, which indicates that a low enough frequency would lead to a strong mixing between warm and cold fluids, thereby significantly deteriorating the cooling performance, whereas a high enough frequency would produce the downward sloping streams flowing from the warm end to the axis and almost puncturing the gas displacer from the warm end, thereby creating larger temperature gradients in radial directions and thus undermining the cooling performance. The influence of the pulse tube length on the temperature and velocity when the frequencies are much higher than the optimal one are also discussed. A MCSPTC with an overall mass of 1.1 kg is worked out and tested. With an input electric power of 59 W and operating at 144 Hz, it achieves a no-load temperature of 61.4 K and a cooling capacity of 1.0 W at 77 K. The changing tendencies of tested results are in good agreement with the simulations. The above studies will help to thoroughly understand the underlying mechanism of the inertance MCSPTC operating at very high frequencies.
机译：本文介绍了在90-170Hz的微观同轴斯特林脉冲管冷凝器（MCSPTC）中的振动流量和传热过程的CFD建模和实验验证。它既不使用双口径也不是多旁路，同时具有气体储存器的惯性管成为唯一的移相器。研究了频率对脉冲管中的流动和传热过程的影响，这表明足够低的频率导致温热和冷流体之间的强搅拌，从而显着降低了冷却性能，而足够高的频率从升温到轴线的向下倾斜的倾斜流，几乎将气体置换器从暖端刺穿，从而在径向方向上产生较大的温度梯度，从而破坏冷却性能。还讨论了脉冲管长度对频率远高于最佳的温度和速度的影响。整体质量为1.1千克的MCSPTC的研磨和测试。输入电力为59W的电力和144 Hz，它实现了61.4 k的无负载温度和77 K的冷却能力为1.0W。测试结果的变化趋势与模拟良好。上述研究将有助于彻底了解在非常高的频率下运行的惰性MCSPTC的潜在机制。

著录项

  • 来源
    《Cryogenics》 |2018年第2018期|共11页
  • 作者

    Zhao Yibo; Yu Guorui; Tan Jun; Mao Xiaochen; Li Jiaqi; Zha Rui; Li Ning; Dang Haizheng;

  • 作者单位

    Shanghai Inst Measurement &

    Testing Technol 1500 Zhangheng Rd Shanghai 201203 Peoples R China;

    Shanghai Inst Measurement &

    Testing Technol 1500 Zhangheng Rd Shanghai 201203 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys 500 Yutian Rd Shanghai 200083 Peoples R China;

    Shanghai Inst Measurement &

    Testing Technol 1500 Zhangheng Rd Shanghai 201203 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys 500 Yutian Rd Shanghai 200083 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys 500 Yutian Rd Shanghai 200083 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys 500 Yutian Rd Shanghai 200083 Peoples R China;

    Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys 500 Yutian Rd Shanghai 200083 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 制冷工程;低温物理学;
  • 关键词

    CFD modeling; Oscillating flow and heat transfer; 90-170 Hz; Micro coaxial Stirling-type pulse tube cryocooler; Experimental verification;

    机译：CFD造型;振荡流动和传热;90-170 Hz;微同轴旋转型脉冲管冷冻室;实验验证;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号