冰晶颗粒的浮升融化过程

doi:10.16183/j.cnki.jsjtu.2020.05.004

上海交通大学学报 ›› 2020, Vol. 54 ›› Issue (5): 473-480.doi: 10.16183/j.cnki.jsjtu.2020.05.004

冰晶颗粒的浮升融化过程

张雨龙，张鹏，马非

上海交通大学制冷与低温工程研究所，上海 200240

发布日期:2020-06-02
通讯作者: 张鹏，男，教授，博士生导师，电话（Tel.）:021-34205505; E-mail: zhangp@sjtu.edu.cn.
作者简介:张雨龙（1994-），男，湖北省荆州市人，硕士生，研究领域为相变浆体的流动与传热传质.
基金资助:
国家自然科学基金资助项目(51676122)

Floating and Melting Process of an Ice Particle

ZHANG Yulong，ZHANG Peng，MA Fei

Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China

Published:2020-06-02

摘要/Abstract

摘要： 为了更好地理解相变浆体的流动与热质传递过程，对冰晶颗粒在水中的浮升融化过程进行了数值计算研究.计算模型考虑了多种作用力下冰晶颗粒的自由浮升过程，并通过焓-多孔介质法对颗粒浮升中伴随的融化过程进行了描述.利用该模型研究了流体与颗粒的换热温差以及颗粒内部过冷对其非均匀浮升融化过程的影响，获得了颗粒浮升融化过程中的形态变化以及涉及到的流动与传热特性.计算结果表明，冰晶颗粒内部的过冷度对颗粒的融化有极大的阻碍作用.

关键词: 冰晶颗粒；过冷；自由浮升；非均匀融化

Abstract: In order to understand the flow and heat transfer characteristics of phase change slurry, the floating and melting process of an ice particle in water is numerically studied. The free-floating process of an ice particle under various forces is numerically modelled, and the melting process of solid particle is described by enthalpy-porous method. The model is implemented to study the floating and non-uniform melting process of an ice particle at different temperature variations and internal supercooling degrees. The morphological change of ice particle and the thermo-fluidic characteristics during floating and melting process are obtained. It is found that the internal supercooling degree of ice particle delays the melting of ice particle.

Key words: ice particle; supercooling; free-floating; non-uniform melting

中图分类号:

TB 61
TK 02

张雨龙，张鹏，马非. 冰晶颗粒的浮升融化过程[J]. 上海交通大学学报, 2020, 54(5): 473-480.

ZHANG Yulong，ZHANG Peng，MA Fei. Floating and Melting Process of an Ice Particle[J]. Journal of Shanghai Jiaotong University, 2020, 54(5): 473-480.

参考文献

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冰晶颗粒的浮升融化过程

Floating and Melting Process of an Ice Particle

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