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Model for aircraft icing with consideration of property-variable rime ice

机译：考虑可变冰霜冰的飞机结冰模型

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摘要

A new one-dimensional model has been developed to describe the aircraft icing process based on the fundamental theory of solid-liquid phase change. The model assumes that there exist two modes for aircraft icing, i.e. the dry and the wet mode icing. Rime ice forms on aircraft skin during the dry mode icing, which occurs at the early icing stage, with its physical properties being affected by airflow parameters and varying with the ice thickness. Glaze ice forms on the rime ice when water film appears on the glaze ice during the wet mode icing, which takes place at the later icing stage. The uniqueness of the model is to consider the rime ice as a porous medium and assume that its effective properties are initially determined by the airflow parameters and then vary linearly with the rime ice thickness, with the properties continuing at the rime/glaze ice interface. Calculations are conducted to analyze the ice accretion characteristics, and the results are presented with comparison with those given by some classical icing models. The results suggest that the ice accretion process is affected by the airflow parameters as well as the heat conductions in the ice layer and water film, and the model with consideration of property-variable rime ice can better describe the ice accretion process.
机译：基于固液相变的基本理论，开发了一种新的一维模型来描述飞机的结冰过程。该模型假设飞机有两种结冰模式，即干式和湿式结冰。霜冰在干冰模式下结冰期间在飞机蒙皮上形成，这种情况发生在结冰初期，其物理特性受气流参数的影响并随冰层厚度的变化而变化。当在湿式结冰期间在结冰上出现水膜时，结冰上会形成结冰。该模型的唯一性是将霜冰视为一种多孔介质，并假设其有效属性最初由气流参数确定，然后随霜冰厚度线性变化，并且该属性在霜/釉冰界面处持续。进行了计算以分析积冰特征，并与一些传统的结冰模型给出的结果进行了比较，给出了结果。结果表明，结冰过程受气流参数以及冰层和水膜中的热传导的影响，并且考虑到性质可变的霜冰的模型可以更好地描述结冰过程。

著录项

  • 来源
  • 作者

    Xuan Zhang; Jingchun Min; Xiaomin Wu;

  • 作者单位

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Icing model; Property-variable rime ice; Aircraft icing; Heat transfer;

    机译：结冰模型性质可变的霜冰;飞机结冰;传播热量;

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