说明：  2012年siggraph论文，描述了流体中的flip流体模拟方法，使流体模拟中的空隙缺陷减小到最少。从而使流体完成了整体的效果。
(2012 siggraph paper that describes a fluid simulation of fluid in the flip, so that the gap defects in the fluid simulation is reduced to a minimum. So that the fluid to complete the overall effect.)