Two-dimensional simulation of frost formation on the NACA0012 airfoil under strong convection by using the p-VOF method

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