改进的电热除冰系统仿真

Improved simulation of electrothermal de-icing system

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要: 建立了电热除冰系统矩形微段的二维简化物理模型,采用焓法模型建立相变导热问题的微分控制方程,用控制容积法对该模型的控制方程及其边界、初始条件进行离散,使用块修正技术对原有的离散方程组的求解方法进行了改进,得到各个时刻的温度分布及冰的融解情况.计算结果与文献实验结果吻合,验证了改进的算法和程序的正确性.并计算分析了时间步长的选择、网格的划分对计算结果的影响.
- 电热除冰 /
- 数值仿真 /
- 焓法 /
- 块修正技术
Abstract: A two-dimensional rectangular geometry used to simulate the electro-thermal de-icing system was modeled.The enthalpy method was appliled to establish heat conduction governing equations considering the phase chang.The control volume method was adopted to discretize the governing equations,as well as initial and boundary conditions.The block-correction technique was used to improve the solving of the difference equations system.Comparison was made with previous studies of foreign paper and excellent agreement was achieved,documenting the validity of the improved numerical codes.The effects of time step and grid on the results of the simulation were analyzed.
- electrothermal de-icing /
- numerical simulation /
- enthalpy method /
- block-correction technique

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