Forced Circulation Evaporator Working Principle

Working principle of a falling film evaporator: a horizontal or vertical shell-and-tube heat exchanger or plate heat exchanger as the calandria, with flash vessel/separator arranged above the calandria, circulation pump.
video.gea.com/video/15698573/f...

[@user-omarabdelaziz]

could you tell me the software used to make this animation??? thanks in advance