Marine pump operation environment simulation system and method

Abstract

The invention provides a marine pump operation environment simulation system and method, and belongs to the field of fluid machinery numerical calculation. The system mainly comprises a model acquisition module, a motion law acquisition module and a model setting module. The motion law acquisition module acquires a marine pump swing law and a fluid medium impeller rotating shaft position change law according to the three-dimensional model established by the model acquisition module; the model setting module imports grid data obtained after the motion law and the three-dimensional model are subjected to grid division into a fluid analysis unit for processing, and simulates and builds a complete marine pump operation environment. The periodic angular displacement motion law of swinging of the marine pump is loaded into the fluid medium in a function form, so that the fluid medium and the marine pump are kept consistent in motion, and the design reasonability and the operation stability of the marine pump are improved; the dependence on a land pump design method in the marine pump design process can be reduced.

Description

technical field [0001] The invention belongs to the field of numerical calculation of fluid machinery, in particular to a system and method for simulating the operating environment of a marine pump. Background technique [0002] Marine pumps are machines used on ships to increase the pressure or potential energy of liquids and liquid materials to make them flow. They are widely used in various systems such as power, fire protection, ballast, drainage, drainage and sanitation of ships. Because the ship will sway and tilt under the action of wind, sea waves and other factors, the medium in the marine pump and its pipeline will generate additional acceleration and inertia force, which will cause periodic fluctuations in the working fluid, affecting the unsteady characteristics of the flow and At the same time, the force change when the marine pump operates in a swaying environment will also reduce the hydraulic performance of the marine pump, aggravate vibration and noise, etc....

AI Technical Summary

Problems solved by technology

Because the ship will sway and tilt under the action of wind, sea waves and other factors, the medium in the marine pump and its pipeline will generate additional acceleration and inertia force, which will cause periodic fluctuations in the working fluid, affecting the unsteady characteristics of the flow and Dynamic response characteristics, at the same time, the force change of the marine pump when it is operating in a swaying environment will also reduce the hydraulic performance of the marine pump, aggravate vibration and noise, etc.

[0003] At present, most domestic marine pumps in my country adopt semi-theoretical and semi-empirical design methods based on land-use pump design, which is difficult to fully meet the multi-objective design requirements of marine pump performance parameters, reliability, and environmental conditions.

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