Experimental device and method for researching relation between double-ship distance and hydrodynamic interference characteristics

The invention discloses an experimental device for studying the relation between the distance between two ships and hydrodynamic interference characteristics. The experimental device comprises an upper supporting frame, two single ships, a clamping device, a spring tension meter, a wave height meter and a small observation ball. The upper supporting frame comprises a fixed frame, movable trusses and a fixed truss, the two single ships are arranged below the two movable trusses, and each single ship is connected with the corresponding movable truss through a spring tension meter; the clamping device is arranged at the joint of the movable truss and the bottom cross brace and used for locking or loosening the movable truss, and the movable truss can transversely move in the loosening state to achieve adjustment of the distance between the two ships; the wave height meter is installed on the fixed truss and used for measuring the wave height of the wave surface of the slit between the two ships. The observation