The Reservoirs suction and discharge can be extended to open water like ponds, lakes, dams ... or closed tanks.

• If the Reservoirs is open the pressure is atmospheric pressure. In mecaflux if you check atm pressure in the Reservoirs, calculations will be based on the atmospheric pressure at the altitude of the reservoir, according to the suction and discharge height you entered.

• If the tanks are pressurized uncheck atm pressure in the schema and enter your pressure values. This is handy if you want to calculate the power of your pump for a given discharge pressure

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For flow calculations or operating points in networks fed by reservoirs or pumps, we must compare the curve of losses in the network with the pressure-flow curve of the pump (or tank). The Graphical analysis and other tools built into mecaflux allow this kind of calculation

Determine the operating point or flow of a network connected to a pump or reservoir.