径向旋转热管的数值模拟方法

李果; 许源; 张雨辰; 张国华; 丁水汀

doi:10.13224/j.cnki.jasp.20210639

径向旋转热管的数值模拟方法

doi: 10.13224/j.cnki.jasp.20210639

李果^1,,
许源^1,*, ,,
张雨辰¹,
张国华²,
丁水汀³

1.
北京航空航天大学能源与动力工程学院，北京 100191
2.
北京航空航天大学航空发动机研究院，北京 100191
3.
中国民航大学，天津 300300

详细信息

作者简介:
李果（1983-），男，教授、博士生导师，博士，主要从事航空发动机安全性与适航方面的研究。E-mail：lg666@buaa.edu.cn

通讯作者:
许源（1996-），男，硕士，主要从事热管涡轮盘方面的研究。E-mail：xuyuan0817@163.com

中图分类号: V232.3
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出版历程
- 收稿日期: 2021-11-08
- 网络出版日期: 2023-05-29

Numerical simulation method of radial rotating heat pipe

1.
School of Energy and Power Engineering， Beihang University，Beijing 100191，China
2.
Research Institute of Aero-Engine， Beihang University，Beijing 100191，China
3.
Civil Aviation University of China，Tianjin 300300，China

摘要

摘要:
为了推动热管涡轮盘进入实用阶段，对热管内部的流动、相变及传热机理进行了数值模拟研究，采用流体体积（VOF）两相流模型，通过用户自定义函数（UDF）编程将Sun等提出的相变模型应用于重力热管及径向旋转热管，编程实现了相变界面网格捕捉方法以及质量守恒控制方法。重力热管的数值模拟结果与实验吻合较好，温度场的误差小于2%，将该方法推广至径向旋转热管后可观测到，离心力增大会使热管整体温度升高10%以上，内部工质流动加速超过2 m/s。以上结果说明，该方法适用于热管的数值模拟，而旋转离心力会对热管的温度场、流场产生较大影响。该工作为热管涡轮盘的数值模拟奠定了基础。
- 涡轮盘 /
- 径向旋转热管 /
- 热管模拟 /
- 相变传热 /
- 两相流动
Abstract:
In order to promote the heat pipe turbine disk into the practical stage, the flow, phase change and heat transfer mechanism inside the heat pipe were numerically simulated. The volume of fluid (VOF) two-phase flow model was adopted, and the phase change model proposed by Sun et al was applied to gravity heat pipe and radially rotating heat pipe for the first time through user-defined function (UDF) programming. The phase change interface grid capture method and mass conservation control method were realized by programming. The numerical simulation results of the gravity heat pipe were in good agreement with experiment, and the error of temperature field was less than 2%. After this the method was extended to the radially rotating heat pipe. It can be observed that the increase of centrifugal force increased the overall temperature of the heat pipe more than 10% and accelerated the flow velocity of the internal working fluid more than 2 m/s. The above results show that this method is suitable for the numerical simulation of heat pipe, and the rotating centrifugal force will have a greater impact on the temperature field and flow field of the heat pipe. This work has laid a foundation for the numerical simulation of the heat pipe turbine disk.
- turbine disk /
- radial rotating heat pipe /
- heat pipe simulation /
- phase change heat transfer /
- two-phase flow

HTML

图 1 重力热管边界条件

Figure 1. Boundary conditions of gravity heat pipe

下载: 全尺寸图片幻灯片

图 2 径向热管边界条件

Figure 2. Boundary conditions of radially rotating heat pipe

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图 3 计算网格

Figure 3. Computational grid

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图 4 模拟与实验结果对比

Figure 4. Comparison between simulation and experimental results

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图 5 热管的内部相分布

Figure 5. Phase distribution in heat pipe

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图 6 不同转速下热管内壁面的温度分布

Figure 6. Temperature distribution on inner surface of heat pipe under different rotational speeds

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图 7 不同转速下的热阻分布

Figure 7. Thermal resistance distribution under different rotational speeds

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图 8 不同转速下热管中心的温度分布

Figure 8. Temperature distribution on center of heat pipe under different rotational speeds

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图 9 不同转速热管中心的轴向速度分布

Figure 9. Axial velocity distribution on center of heat pipe under different rotational speeds

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表 1 网格无关性验证

Table 1. Grid independence verification

网格数量最大温差/K

82500 50.28
99000 42.73
132000 42.25

下载: 导出CSV

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