为研究液滴撞击不同润湿性加热表面的传热传质问题，基于体积分数（volume of fluid, VOF）方法，分析了壁面润湿性和表面温度对液滴形态及传热特性的作用机理，结果表明：亲水壁面有利于液滴的铺展，疏水壁面则有利于液滴的反弹，随着接触角的增大，液滴最大铺展因子减小，达最大铺展因子的时间缩短，壁面平均热流密度减小。表面温度对液滴铺展阶段的影响较小，随着表面温度的升高，液滴相变速率加快，壁面平均热流密度增大，表面温度超过临界温度时，产生Leidenfrost现象。

In order to investigate the heat and mass transfer of liquid droplet impinging on a heated surface with different wettability, VOF(volume of fluid) numerical simulation method was used to analyzed the mechanisms of wall wettability and surface temperature on droplet morphology and heat transfer characteristics. The results show that the hydrophilic wall is favorable for droplet spreading, while the hydrophobic wall is favorable for droplet rebound. With the increase of contact angle, the maximum spreading factor of droplets decreases, the time to reach the maximum spreading factor is shortened, and the average heat flux of the wall surface decreases. Surface temperature has less influence on the droplet spreading stage, with the increase of surface temperature, the droplet phase transition rate accelerates, the average heat flux of the wall surface increases, and the Leidenfrost phenomenon occurs when the surface temperature exceeds the critical temperature.