[jarekk91]

hi

i simulate the folw of water in a large tank (cylinder). Model is 2d, axisymetric. The tank have one input(velocity-inlet) and one output (negative velocity-inlet). At the beginning the tank is filled with water (313K) to a certain level (picture), then at the inlet we have water at 371 K and at the outlet is water of the same mass. The mass of water in tank does not change. I have problem because in 2d simulation i can't define mass flow. I must have the same flow mass in inlet and outlet. When i define the same velocity the mass of water in tank is change, because i set the density of water a polynomial. Can i set the velocity at the outlet depending on the velocity at the inlet?

https://i.imgur.com/WJptdVB.png