An underwater bionic fin submerged propulsion test device and method

Abstract

The invention discloses an underwater bionic fin submerged propulsion test device and a test method. The test device includes a water tank and a circulating waterway body. The body is placed in the water tank. The middle part of the body is divided into a water-driven waterway area and a test observation waterway area by setting a middle partition in the middle of the body. The right end is equipped with a propeller, the left end of the test observation channel area is equipped with a square honeycomb flow stabilization screen, the right end is equipped with a barrier grid, and the left side of the body is equidistantly equipped with several semicircular deflectors with different radii. A flow meter is arranged in the center; a circulating water driving motor is arranged on the outside of the right end of the water tank, and the motor is connected to a propeller; a bionic fin waterproof driving motor is arranged on the top of the test observation channel area, and the bionic fin waterproof driving motor is connected with a Bionic fin coupling, connecting shaft II, load cell, connecting shaft I and bionic fin. The invention has the advantages of simple structure, controllable water flow and accurate test.

Description

technical field [0001] The invention relates to an underwater bionic fin submerged propulsion testing device and method, belonging to the research field of hydrodynamics and experimental fluid mechanics. Background technique [0002] Fish have extraordinary underwater mobility. By observing the swimming posture of live fish, biogeometric and kinematic characteristics can be provided for the design of bionic fin structures. The experimental device used for live fish observation and bionic fin performance testing is live fish. It is an important means of attitude recording and performance analysis of bionic structures, especially important. [0003] Existing experimental devices for testing the performance of fish-shaped bionic fin structures are mostly placed in an open static water environment. The application number is: CN201610128151.4, the invention patent introduces a six-dimensional test platform for underwater equipment water tunnel experiment. It is a cantilever rail...

AI Technical Summary

Problems solved by technology

The application number is: 201720002509.9 invention patent, which introduces a horizontal circulating water tank with diversion and rectification device. The diversion and rectification are segmented structures, which can effectively reduce the influence of lateral circulation on the experimental results. The invention cannot eliminate the influence of the eddy current caused by the propeller, and the propeller needs to push the water flow in the entire pipeline, which consumes a lot of energy and has low efficiency. At the same time, it is difficult to ensure that the water medium fills the entire pipeline

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