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Wake field simulation method for cavitation water drum paddle model test

A simulation method and test technology, applied in the field of ship testing, can solve the problems of inability to conduct ship model test, simulate the three-way wake field at the stern, and limit the size of medium-sized cavitation water cylinders. low cost effect

Active Publication Date: 2021-01-29
708TH RES INST OF CSSC
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: due to the limited size of the medium-sized cavitation water tank, the whole ship model cannot be placed in the working section for testing, and the usual grid method cannot be used to simulate the three-way accompanying flow at the stern with appendages field problem

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  • Wake field simulation method for cavitation water drum paddle model test
  • Wake field simulation method for cavitation water drum paddle model test
  • Wake field simulation method for cavitation water drum paddle model test

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0031] In the embodiment of the present invention, by using the wire grid 1+attachment model 2, it is possible to more accurately simulate the three-way wake of the wake field of a ship with a stern energy-saving appendage and a double-screw ship with a shaft support. The paddle model test carried out in the field is closer to the real ship working conditions, and the test results are more reliable. The wire mesh 1 is br...

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Abstract

The invention discloses a wake field simulation method for a cavitation water drum paddle model test, and the method can accurately and conveniently simulate three-way wake of a single-paddle ship with a stern energy-saving appendage or a double-paddle ship with a shaft bracket by utilizing a grid and appendage model, the paddle model test carried out in the wake field is closer to the working condition of a real ship, and the test result is more accurate and reliable. The grids are formed by weaving a plurality of layers of metal wires and are fixed near a water flow inlet of the cavitation water drum test section; the appendage model is obtained through 3D printing and other methods, the period is short, the cost is low, and the appendage model can be conveniently installed in front of apaddle mold on a cavitation water drum test shaft. According to the method, the test capability of the medium-sized cavitation water drum is expanded, and the influence of an energy-saving appendageor a shaft bracket and the like in front of the propeller mold on the performance of the propeller can be observed more meticulously.

Description

technical field [0001] The invention relates to a method for simulating a wake field for a cavitation water cylinder propeller model test, in particular to a method for simulating a wake field generated by a stern shape with an attached body in a cavitation water cylinder, and belongs to the technical field of ship testing. Background technique [0002] The cavitation water tank is the main test facility for carrying out tests of propeller model cavitation and pulsating pressure performance. Due to the size limitation of the medium-sized cavitation water tank, the whole ship model cannot be placed in the working section for testing. In order to analyze the influence of the wake field of the hull on the propeller, a wire mesh is usually used to simulate the wake, and only the hull axis can be simulated. to the wake. This kind of simulation method is simple and mature, and the grid simulation method can meet the technical requirements for general single-screw ships. Axial wa...

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M10/00Y02T90/00
Inventor 丁举刘正浩王建强孔为平周旻
Owner 708TH RES INST OF CSSC
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