[zhihuawan]

Originally Posted by ghorrocks

If I understand correctly, you are only interested in the fully developed flow. You have previously stated that you know the fully developed velocity profile and fluid depth. So don't you know everything about the fully developed flow then? What is the point of the CFD model?

Yes ,you are right,I want to study the fully developed flow,and my purpose is to verify the model in the article(in the image),in the article ,the author has use this method to simulate the falling film progress, I think this method is very useful for my research in the future,because my research is familar to this model in the article,only to solve the periodic condition can I simulate the film flowing character and heat transfer character.Thank you.