Co-current flow type deepwater current generation system and method

The invention relates to a parallel flow deepwater current system and relative method used in ship and sea project. The invention comprises: six layers of current devices, while each one is formed by driving water pump, a inlet tube and a outlet tube, while the inlet and outlet tubes connect two ends of water pool; six layers are vertically arranged around the water pool. The method comprises: arranging connecting channels at the top two layers and the bottom two layers; via adjusting the valve of tube, the energy of driving pump that driving water is distributed between the vertical layers to produce variable section currents. The invention can simulate variable deepwater sections demanded by tests and reduce cost and save energy. And since the upper and lower layers are connected, the water pool can generate ascending and descending currents.