Thermal Analysis and Calculating Study of Low-Temperature Optical Mechanical Device

WU Shanshan; WANG Jue; ZHANG Hengcheng; LIU Huiming; HUANG Chuanjun; HUANG Rongjin; LI Laifeng; ZHOU Yuan

doi:10.7652/xjtuxb202304013

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Thermal Analysis and Calculating Study of Low-Temperature Optical Mechanical Device

更新时间：2025-07-09

- Thermal Analysis and Calculating Study of Low-Temperature Optical Mechanical Device
- Vol. 57, Issue 4, Pages: 122-132(2023)
- 作者机构：
  
  1. 中国科学院理化技术研究所航天低温推进剂技术国家重点实验室,北京,100190
  2. 中国科学院大学,北京,100049
  3. 航天科工空间工程发展有限公司,北京,100854
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202304013
  CLC： TB65
- Online First：10 April 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
WU Shanshan, WANG Jue, ZHANG Hengcheng, et al. Thermal Analysis and Calculating Study of Low-Temperature Optical Mechanical Device[J]. 2023, 57(4): 122-132.
DOI：

WU Shanshan, WANG Jue, ZHANG Hengcheng, et al. Thermal Analysis and Calculating Study of Low-Temperature Optical Mechanical Device[J]. 2023, 57(4): 122-132. DOI： 10.7652/xjtuxb202304013.

摘要

为优化干冷式宽温域低温可视化力学测量装置的内部传热特性

降低装置传导和辐射漏热

提高样品的温度均匀性

基于Sage、COMSOL研究了不同尺寸试样的温度场分布

对比了两种计算方法的一致性。研究了试样表面发射率、窗口表面发射率以及窗口尺寸对试样温度的影响。结果表明:Sage、COMSOL两种方法计算的试样最低温度分别为4.211 5、4.219 4 K

温度基本一致

且Sage一维计算方法可以更直观地分析低温装置内各个传热节点的参数; 当试样尺寸为3 mm×30 mm×2.5 mm的小规格尺寸

试样表面发射率低至0.01时

试样自身温度最为均匀

两端温差仅为0.005 K; 降低窗口的表面发射率、减小窗口的辐射面积均有利于试样温度的均匀分布; 小尺寸试样的温度分布几乎不受材料表面发射率和窗口参数的影响

自身温差始终保持最小。

Abstract

To optimize the internal heat transfer characteristics of dry-cooled wide-temperature range low-temperature visualization mechanical measuring device

reduce the conduction and radiation heat leakage of the device

and improve the temperature uniformity of specimens

the temperature distribution of specimens of different sizes was studied based on Sage and COMSOL

and the consistency of the two calculation methods was compared. The effects of the surface emissivity of the specimens

the surface emissivity of the windows and the window size on the specimen temperature were studied. The results showed that the lowest temperatures of the specimens calculated by Sage and COMSOL were 4.211 5 K and 4.219 4 K

respectively. The results were basically consistent

and the Sage calculation method could analyze the parameters of each heat transfer node in the cryogenic device more intuitively. When the specimen's dimensions were 3 mm×30 mm×2.5 mm and the surface emissivity of the specimen was 0.01

the temperature of the specimen was the most uniform

with the temperature difference between the two ends being only 0.005 K. In addition

lowering the surface emissivity of the window and reducing the radiation area of the window were conducive to the uniform temperature distribution on the specimen. The temperature distribution of small-sized specimens is almost independent of the material surface emissivity and window parameters

and the temperature difference is maintained at a minimum level.

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