At first I decided to make another fluid sim. However, I met some problems and didn’t have enough time to solve it. Therefore, I stopped the process and turned to optimize all the things that I have already done.
As I mentioned before, the explosion render color is incorrect. Therefore, I adjusted the color of the volume and exported the whole sequence again. What’s more, I remove some weired dots on the global illumination channel by using rotopaint.
Also, I realize that the water sim still has some problem. Some of the water drops flying crazy in the air, which is quite annoying. I think the result comes from the volume noise that I applied on the surface of spaceship. The flying drops can be limited if I decrease the noise.
I firstly decide to resim the whole scene. However, the time is quite limited so that I chose to remove these drops in post-process. I used rotopaint in Nuke to remove these drops frame by frame. Since I have already separate the foreground and background, this part didn’t take much time to finish.