Hi all, I have a practical problem at work that I need some help with please! In the ground, there is a gas pipe that runs alongside a burst water pipe. There is a hole in the gas pipe of approx 40mm in diameter, and the water is blasting the hole with constant water pressure of 4000 millibar. Any idea how to work out rate of water flow entering the hole in the gas pipe? Any help much appreciated! The only comparable problems I can find on the net are rate of water leaking out of a hole in a bucket that is full with water (bernoulli's law). Can this equation be used too? Q = A x v?