Hi everyone, (I hope I'm posting it in the right place, please feel free to move this thread to the appropriate place) My high school graduation project is about the application of the theory of complex variables in physics. Specifically, I am learning about the complex potential, its existence and its use in hydrodynamical problems. I'm having a little bit of trouble understanding some of the theory behind the project. For one thing, I didn't fully understand the physical meaning of streamlines and equipotential lines - I know how to find them from the complex potential, but I don't understand what they actually mean. And the other important thing is that I don't know how to take a given physical situation and find the complex potential that describes it. Clearly there are the simple cases of pointlike sources or sinks, which are easy to describe, but is there a general method of finding a complex potential when I know the settings of the physical system? If you could answer these questions, or maybe give me some relevant textbooks or articles, that would be great. Thank you very much!