Hello, I'm trying to find situations in which it is important or useful to look at the force generated by a difference in pressure due to an increase in velocity of a fluid. I.e, pressure changes due to Bernoulli's equation. This should be simple by itself, but I am looking for situations that involve plane surfaces (the two-dimensional analogue of a line, not the thing that flies). So far, I found out about houses. During storms the difference in pressure because of the strong wind will cause a lift force on the roof of the house, and might rip it away. A roof is more or less two plane surfaces joined together at an angle, so it is a situation involving lift forces and planes. Searches have been rather fruitless because every source just talks about birds and planes (the flying kind this time) and how airfoils work with the lift force. Thanks for answers.