变折射率介质相变过程辐射导热耦合换热RKPM模拟

发布时间：2018-03-26 08:14

  本文选题：无网格法　切入点：辐射传输　出处：《工程热物理学报》2016年07期

【摘要】：基于无网格再生核粒子法(RKMP),采用等效热容法处理相变潜热的吸收和释放,通过求解梯度折射率辐射传输方程处理变折射率问题,建立半透明材料相变过程的辐射导热耦合统一的计算方法。计算了一维晶体和非晶体半透明材料凝固过程温度响应特性,考虑了折射率变化对相变过程的影响,通过和文献值对比,验证了RKPM能够模拟含有相变过程的辐射传输问题,且具有良好的精度。
[Abstract]:Based on the meshless reproducing kernel particle method (RKMPN), the absorption and release of latent heat of phase transition are treated by equivalent heat capacity method, and the problem of variable refractive index is solved by solving the gradient index radiation transfer equation. In this paper, a unified calculation method of radiation heat conduction coupling for phase transition process of translucent material is established. The temperature response characteristics of one-dimensional crystal and amorphous semi-transparent material during solidification process are calculated, and the effect of refractive index change on phase transition process is considered. By comparing with the literature, it is proved that RKPM can simulate the radiation transfer problem with phase change process and has good accuracy.
【作者单位】： 哈尔滨工业大学能源科学与工程学院;试验物理与计算数学国家重点实验室;
【基金】：国家自然科学基金资助项目(No.51576054)
【分类号】：TK124
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本文编号：1667129