快速来流条件下低温平板常物性霜层一维干模态结霜模拟研究  

One-dimensional Simulation of Dry-model Frosting on a Cold Plate With Constant Properties Under Fast Airflow

作　　者：夏斌 徐向华[1] 梁新刚[1] XIA Bin;XU Xiang-Hua;LIANG Xin-Gang(Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,School of Aerospace Engineering,Tsinghua University,Beijing 100084,China;State Key Laboratory of Aerodynamics,China aerodynamics research and development center State,Mianyang 621000,China)

机构地区：[1]清华大学航天航空学院热科学与动力工程教育部重点实验室,北京100084 [2]中国空气动力研究与发展中心空气动力学国家重点实验室,绵阳621000

出　　处：《工程热物理学报》2022年第1期219-225,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金创新研究群体项目(No.51621062);国家数值风洞工程。

摘　　要：在快速来流条件下低温平板结霜实验观测的基础上,提出了该种结霜条件下的一维结霜模型。在准稳态的假设前提下,构建了动态结霜的能量方程和质量方程,进行了常物性霜层一维模拟,模拟结果与结霜实验结果吻合较好。进行了单因素变化的一维干模态结霜模拟分析,研究了冷板温度、来流速度、来流湿度、来流温度、霜层密度和霜层热导率等因素变化对结霜的影响规律。在所模拟的参数范围内,来流温度、霜层密度对结霜厚度的影响较小,来流速度、来流湿度、冷板温度和霜层热导率对结霜厚度的影响较大。A one-dimensional model of frosting on the cold plate under high-speed airflow was proposed,based on the experimental observation of frosting under this condition.Under the assumption of quasi-steady state,the dynamic frosting energy and mass equation were established.The onedimensional frosting simulation with constant properties was carried out,which results were in good agreement with the experiment results.The influence of single factor changes in cold plate temperature,air velocity,air humidity,air temperature,frost density and frost thermal conductivity on frost formation was analyzed by using dry-mode frosting simulation.Within the range of simulation parameters,the air temperature and frost density have little impact on the frost thickness,while the air velocity,air humidity,cold plate temperature and frost thermal conductivity have a greater impact on the frost thickness.

关 键 词：快速来流 低温平板 结霜 模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]