基于FLUENT的水下热滑翔机相变过程仿真分析

刘鸿瑨; 胡欲立; 杨 威; 郝泽花

doi:10.11993/j.issn.2096-3920.2020.05.009

基于FLUENT的水下热滑翔机相变过程仿真分析

doi: 10.11993/j.issn.2096-3920.2020.05.009

西北工业大学航海学院, 陕西西安, 710072

详细信息

作者简介:
刘鸿瑨(1995-), 男, 硕士, 主要研究方向为水下热滑翔机技术.

中图分类号: TJ630.32 TK11.4
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- 文章访问数: 156
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- 被引次数: 0
出版历程
- 收稿日期: 2020-01-10
- 修回日期: 2020-04-25
- 刊出日期: 2020-10-31

Simulation of Phase Transition Process of Underwater Thermal Glider Based on FLUENT

School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China

摘要

摘要: 固液相变过程是水下热滑翔机汲取利用海洋温差能的关键过程。固液相变过程受多种因素影响, 文中主要考虑在自然对流存在的基础上, 引入了压力对热滑翔机固液相变过程的影响。建立了水下热滑翔机换热热管中的相变换热仿真模型, 并使用ANSYS FLUENT 18.0软件对不同压力下热管换热过程进行仿真计算。研究发现, 压力会改变材料的融化温度, 进而影响材料的相变过程。随着压力的升高, 材料融化温度上升, 在相同温度下完全融化所需时间会变长, 但是凝固所需时间反而变短, 如果融点高于海水暖水层温度, 材料将无法完成相变过程, 热滑翔机将不能稳定工作。仿真结果对于水下热滑翔机相变过程研究具有积极意义。
- 水下热滑翔机 /
- 固液相变 /
- 自然对流 /
- 压力
Abstract: The solid-liquid phase transition is key to enable a thermal glider to absorb and utilize the ocean temperature difference energy. The solid-liquid phase transition process is affected by many factors. Herein, based on the existence of natural convection, the effect of pressure on the solid-liquid phase transition process of a thermal glider is introduced. The simulation model of phase-change heat transfer in the heat pipe of an underwater thermal glider is established, and the heat pipe heat-transfer process under different pressures is simulated using ANSYS FLUENT 18.0 software. It is discovered that the pressure can change the melting temperature of the material and affect the phase transformation. With the increase in pressure, the melting temperature of the material increases, and the time required to achieve complete melting under the same temperature increases however, the time required for solidification decreases. If the melting point is higher than the temperature of the warm water layer, then the phase-change material cannot complete the phase-change process, and the thermal glider will not be able to operate stably. The simulation results facilitate the study of the phase-transition process of underwater thermal gliders.
- underwater thermal glider /
- solid-liquid phase transition /
- natural convection /
- pressure

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参考文献(15)

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