Variable-angle ship flat plate test piece flow field isolation type water tank test device

The invention discloses an angle-variable ship flat plate test piece flow field isolation type water tank test device, and belongs to the technical field of ship and ocean engineering flow. The problems that when an existing circulating water tank test device is used for adjusting a test model, a circulating water tank needs to be transformed, the process is tedious, the manufacturing cost is high, and operation is not easy are solved. A ship flat plate test piece is located in a working section of the lower water tank and installed under the silent sound box through an organ type sealing ring, a limiting plate is installed at the top end of the rear portion of the silent sound box, a first limiting long hole is formed in the limiting plate, an adjusting rod is vertically arranged, and the lower end of the adjusting rod is hinged to the top face of the rear portion of the ship flat plate test piece. The inclination angle of the ship flat plate test piece is adjusted by adjusting the position of the adjusting