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Ship self-propulsion point numerical simulation method and device and computer equipment

A numerical simulation, self-propelled point technology, applied in computer-aided design, calculation, design optimization/simulation, etc., can solve the problems of consuming computing resources and low computing efficiency, to improve computing efficiency, high computing accuracy, and avoid manual participation. Effect

Active Publication Date: 2018-02-13
GUANGZHOU SHIPYARD INTERNATIONAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a numerical simulation method, device and computer equipment of a ship's self-propelled point to solve the problems of excessive manual interruption of calculation, low calculation efficiency, and large consumption of computing resources in the existing numerical simulation method of a ship's self-propelled point

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  • Ship self-propulsion point numerical simulation method and device and computer equipment
  • Ship self-propulsion point numerical simulation method and device and computer equipment
  • Ship self-propulsion point numerical simulation method and device and computer equipment

Examples

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Embodiment 1

[0034] figure 1 A flow chart of the steps of a method for numerically simulating a ship's self-propelled point provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of numerically simulating the self-propelled point of a ship (including a physical ship, a ship model). The method It can be executed by various computing devices, and specifically includes the following steps:

[0035] Step 101, perform numerical simulation calculation on the ship at the set speed of the propeller in the flow field;

[0036] Specifically, the self-propelled point of the ship can be divided into the self-propelled point of the physical ship (that is, the self-propelled point of the real ship) and the self-propelled point of the ship model. The point refers to the situation when the propeller thrust is exactly equal to the resistance of the ship model and the increase in resistance during the forced self-propulsion test.

[0037] When designing a ship, i...

Embodiment 2

[0074] figure 2 It is a structural block diagram of a ship self-propelled point numerical simulation device in Embodiment 2 of the present invention. The numerical simulation device in the embodiment of the present invention may specifically include:

[0075] The calculation unit 201 is used to perform numerical simulation calculation on the ship at the set speed of the propeller in the flow field;

[0076] A detection unit 202, configured to acquire the current coercive force corresponding to the set rotational speed when it is detected that the flow field parameters meet the preset steady-state conditions;

[0077] A judging unit 203, configured to judge whether the current coercive force and the preset target coercive force FD0 satisfy a preset size relationship;

[0078] The set rotational speed adjustment unit 204 is configured to obtain a new set rotational speed according to the set rotational speed, and perform numerical simulation calculation again until the current...

Embodiment 3

[0091] image 3 A schematic structural diagram of a computing device provided in Embodiment 3 of the present invention, as shown in image 3 As shown, the computing device includes a processor 30, a memory 31, an input device 32 and an output device 33; the number of processors 30 in the computing device can be one or more, image 3 Take a processor 30 as an example; the processor 30, memory 31, input device 32 and output device 33 in the computing device can be connected by bus or other methods, image 3 Take connection via bus as an example.

[0092] The memory 31, as a computer-readable storage medium, can be used to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the numerical simulation method in the embodiment of the present invention (for example, the calculation unit in the numerical simulation device 201, detection unit 202, judgment unit 203, set rotation speed adjustment unit 204). The proce...

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Abstract

The invention discloses a ship self-propulsion point numerical simulation method and device and computer equipment. In the calculation process of ship self-propulsion point numerical simulation, the magnitude of the compelling force in relatively stable flow field parameters can be obtained in advance; the obtained compelling force is compared with target compelling force; if the magnitude relation between the obtained compelling force and the target compelling force does not meet a preset magnitude relation, a propeller of a ship is corrected for the first time according to a preset correction coefficient; the magnitude of the compelling force obtained after correction is compared with that of the target compelling force so that a propeller rotation speed required by the target compellingforce can be automatically obtained through the interpolation algorithm, a self-propulsion point of the ship is quickly and precisely selected, and the calculation amount of numerical simulation calculation is reduced; besides, on the condition that high calculation precision is obtained, not many calculation resources are needed; excessive manual participation is avoided in the calculation process, and the calculation efficiency is improved.

Description

technical field [0001] Embodiments of the present invention relate to computer numerical simulation technology, in particular to a method, device and computer equipment for numerical simulation of a ship's self-propelled point. Background technique [0002] The way of selecting the self-propelled point in the existing ship numerical simulation calculation is: when the flow field reaches a stable period of time, stop the calculation, derive the forced force FD value, and calculate the average value of the FD value in the stable area Then change the propeller speed R of the ship through experience, so that the FD value can approach the target FD value, continue to calculate for a period of time at the new propeller speed R1, and stop the calculation when the flow field is stable (flow field parameters converge), and derive the forced Force FD value, find the average value of FD in this stable area After these two stop calculations, according to the initial R0 of the propell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06
Inventor 王炳亮王婷
Owner GUANGZHOU SHIPYARD INTERNATIONAL LTD