Swimming system current generator

A swimming system, comprising:

• a pool including a main volume adapted to contain a liquid, and a main passage having an outlet leading to the main volume;
• a primary pump having an outlet from which liquid is discharged under pressure;
• a manifold having at least one inlet communicated with the primary pump outlet and multiple outlets from which the pressurized liquid is discharged;
• multiple entrainment pumps associated with the manifold with one entrainment pump provided for each outlet, each entrainment pump having:
• a nozzle having a nozzle inlet communicating with and receiving pressurized liquid from a respective one of the manifold outlets and a nozzle outlet,
• a venturi having a passage aligned with the nozzle and through which liquid discharged from the nozzle outlet flows, the venturi having a venturi outlet from which fluid flows out of the venturi passage, and
• an entrainment inlet open to the area outboard of the manifold and communicating with the venturi passage,
• wherein the flow of liquid from the nozzle outlet into the venturi creates a pressure drop at the entrainment inlet and fluid in the area of the entrainment inlet is drawn through the entrainment inlet and entrained with the liquid in the venturi to flow through the venturi and out of the venturi outlet, each entrainment pump being arranged so that fluid that flows out of the venturi passage is directed within the main passage at least partially against the force of gravity and the direction of the fluid is changed within the main passage before the fluid exits the main passage through the main passage outlet.