摘要
采用欧拉-拉格朗日法计算空气、水滴两相流动,根据质量守恒和能量守恒计算结冰量和溢流水量,溢流水的流动方向及不同方向的流量分配由当地空气的速度矢量、网格边界的法向量计算得到。采用非稳态方法、非结构网格计算了NACA0012平直翼、截面为GLC-305的后掠翼的结冰,并与文献中的实验结果进行了对比,结果显示最大结冰厚度与实验吻合较好,预测的冰形与实验冰形发展趋势一致。计算结果表明,提出的三维结冰计算方法是有效、可行的,为三维结冰计算提供了一条可选的途径。
The Eulerian- Lagranian model was employed to simulate the air- water two phase flow. Mass and energy conservation equations established in a control volume were used to calculate ice accretion and runback water. Direction and flux of the runback water were determined by local air velocity vector and normal of grid boundary. The unsteady method and unstructured grids are used. Ice accretions on different wings are simulated using this method. The simulated maximum thickness and growth trend of the ice shapes are agreed well with the experimental in literature, the results indicate that the method is effective
出处
《航空计算技术》
2013年第1期36-39,共4页
Aeronautical Computing Technique
基金
西北工业大学基础研究基金项目资助(JC20110221)
关键词
三维结冰计算
数值模拟
溢流水
欧拉-拉格朗日方法
3D ice accretion computation
numerical simulation
runback water
eulerian-lagranian model
