Lifting wave-absorbing device capable of reducing side wall effect of ship towing tank

Abstract

The invention discloses a lifting wave-absorbing device capable of reducing the side wall effect of a ship towing tank, and belongs to the technical field of hydrodynamic tests of ship models. The wave-absorbing device comprises wave-absorbing plates, a lifting device, a transmission system, a wave-absorbing plate connecting frame and fixing devices. The lifting device drives a screw to rotate bythe aid of a rolling bearing through rotation of a rotating disk, and a lifting platform is in threaded connection with the screw, so that the lifting platform can move up and down; the transmission system drives a gear for transmission by a servo motor through a speed reducer, then a transmission rod is driven to rotate, meanwhile, a bevel gear is driven to rotate, and the bevel gear rotates to drive the multiple wave-absorbing plates to rotate in the same direction. When a hydrodynamic test of a ship model is performed, wave reflection is performed on Kelvin waves which can be produced by the side wall of the towing tank or a circulating tank on the ship model, reflected waves act on the ship model, and then hydrodynamic performance analysis of the test is affected. The device is specifically used for improving the accuracy of the test and is specifically used for performing wave-absorbing treatment on the Kelvin waves produced in the advancing process of the ship model.

Description

technical field [0001] The invention belongs to the technical field of ship model hydrodynamic tests, and in particular relates to a lifting wave elimination device for reducing the side wall effect of a ship towing pool. Background technique [0002] With the development of the shipbuilding industry, in order to predict the performance of the ship more accurately, it is necessary to conduct tests on the ship and then analyze the performance of the ship. Considering the huge cost of carrying out the actual ship test, the ship with a certain scale ratio is generally selected. In the ship model test, since the ship model is designed according to a certain scale ratio, there will be the influence of the scale effect. In order to reduce the influence of the scale effect, the ship model as large as possible will be selected for the test. But there will be another problem in this way. The ship model will generate Kelvin waves during the process of travel, and the width of the pool...

AI Technical Summary

Problems solved by technology

[0002] With the development of the shipbuilding industry, in order to predict the performance of the ship more accurately, it is necessary to conduct tests on the ship and then analyze the performance of the ship. Considering the huge cost of carrying out the actual ship test, the ship with a certain scale ratio is generally selected. In the ship model test, since the ship model is designed according to a certain scale ratio, there will be the influence of the scale effect. In order to reduce the influence of the scale effect, the ship model as large as possible will be selected for the test. But there will be another problem in this way. The ship model will generate Kelvin waves during the process of travel, and the width of the pool is certain. When the wave reaches the wall of the pool, it will cause wave reflection, so that the wave will act on the stern of the ship again. , the resistance of the ship model is increased, and the change of the flow field at the tail of the ship model is changed, especially for a ship with a relatively long length. The wave absorbing device can't completely eliminate the ship's traveling waves, so the waves are still reflected to the stern, so it is urgent to solve this problem

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