To IrascibleOne: You are right as I read in some tutorials. But in my case, I changed the domain size many times, it does not affect to the speed of fluid much. This makes me confuse about controlling speech of the fluid. I will check velocity again and the gravity too. I want to develop the viewer, because i want to show my result to other member of my team. The viewer includes cameras, which can observe the flood area in many angles. If you have tutorial for the beginner of Game engine, please let me know. thankl you very much
To SPARTAN-001: Actually, I set the resolution of 100. I wanted to set it higher 150 or 200 but errors always occurred and Belender automatically stopped running (maybe my computer's memory is not enough). I think the limitation of Bleder is that the rendering requires high spectral computer and takes long time (ex: it takes 3 hours for 4 seconds animation).