A newly developed frosting simulation method, p-VOF method, is applied to simulate the dynamic frost formation on the NACA0012 airfoil under strong convection. The p-VOF method is a pseudo VOF method of the multiphase flow simulation with phase change. By solving a simplified mass conservation equation explicitly instead of the original volume fraction equations in CFD software, the efficiency and robustness of calculation are greatly improved. This progress makes it possible to predict a long-time frost formation. The p-VOF method was successfully applied to the simulation of dynamic frosting on the two-dimensional NACA0012 airfoil under strong convection conditions with constant frost physical properties. The simulation result shows that the average thickness of the frost layer increases, and the frost bulges and flow separation appear earlier, when the airfoil surface temperature decreases or the air humidity increases. The frost bulges and flow separation appear earlier, when the air velocity is faster, the growth rate of the frost layer at the early stage is greater, but the final frost layer is thinner.

中文翻译：

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强对流下NACA0012翼型结霜的二维p-VOF法模拟

应用新开发的结霜模拟方法p-VOF法模拟强对流下NACA0012翼型的动态结霜。p-VOF 方法是具有相变的多相流模拟的伪 VOF 方法。通过显式求解简化的质量守恒方程，而不是 CFD 软件中原有的体积分数方程，大大提高了计算的效率和稳健性。这一进展使得预测长期结霜成为可能。将p-VOF方法成功应用于强对流条件下具有恒定霜冻物理特性的二维NACA0012翼型的动态霜冻模拟。模拟结果表明，霜层平均厚度增加，霜胀和流分离出现得更早，当翼型表面温度降低或空气湿度增加时。霜胀和流分离出现得更早，当风速较快时，早期霜层的增长速度较大，但最终霜层较薄。