Simulation and discretization method of offshore oil containment boom motion based on signed distance function

A technology of distance function and motion simulation, which is applied in the field of computer simulation, can solve problems such as inconvenient parallel processing and lack of physical realism, and achieve high physical realism, easy parallel acceleration, and easy parallel acceleration

Inactive Publication Date: 2018-12-14
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

This method is a geometry-based method that lacks physical reality, and the clipping result is a

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  • Simulation and discretization method of offshore oil containment boom motion based on signed distance function
  • Simulation and discretization method of offshore oil containment boom motion based on signed distance function
  • Simulation and discretization method of offshore oil containment boom motion based on signed distance function

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] 1. Oil boom modeling algorithm based on mass spring model

[0051] like figure 2As shown, the mass spring model of the present invention includes a spring 1 and a damper 2, and the damper 2 is connected in parallel with the spring 1. The present invention updates the force according to the position of each node of the oil boom and the force of each node. And update the position according to the momentum theorem. As shown in formula (1), the force on the node is calculated according to the length change of each node. At the same time, in order to increase the stability of the mass spring model, a damper 2 is added, and the calculation of the damping force is shown in formula (2).

[0052] The invention can control the damping force by adjusting the damping coefficient. The resultant force on each node of the oil boom can be obtained by superimposi...

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Abstract

The invention discloses a simulation and discretization method of offshore oil containment boom motion based on a signed distance function, comprising the following steps: simulation of oil containment boom motion based on a mass spring model is performed; discreteness of oil containment boom based on signed distance function. The invention adopts SDF-based method to carry out oil spill interactive simulation, which is more intuitive. When performing interactive processing, only the SDF value at the current location needs to be queried to determine whether the current location requires interactive processing. Compared with the traditional method is more convenient and more intuitive. The invention adopts the marine oil spill interaction method based on the SDF method, which has the naturalparallelism and can be transplanted into the GPU for parallel acceleration. In the process of oil containment boom SDF calculation, the calculation of each grid node can be assigned to a GPU core asneeded, which is very convenient for parallel acceleration. The invention can simulate the movement effect of the oil containment boom towing, and has higher physical reality.

Description

technical field [0001] The invention belongs to the field of computer simulation and the technical field of navigation scene simulation, and in particular relates to an interaction method between an oil boom and sea surface oil spill in a navigation simulator. Background technique [0002] In marine oil spill simulation, the interaction between marine oil spill and marine oil spill emergency equipment is particularly important. This interaction involves the containment and control of oil spills at sea by oil booms, and is usually used to simulate the containment and control of oil spills at sea by oil booms to prevent the spread of oil spills at sea. How to more realistically reflect the interaction between oil spill and oil spill equipment is a difficult point in the process of oil spill interaction. Building a marine oil spill emergency training system based on virtual reality technology can greatly improve the emergency response capabilities of trainers and reduce the co...

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Application Information

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IPC IPC(8): G06F17/50G06F9/50
CPCG06F9/5027G06F30/20G06F2119/06
Inventor 邹长军尹勇孙霄峰神和龙刘秀文任鸿翔张秀凤任俊生肖方兵丛琳刘春雷
Owner DALIAN MARITIME UNIVERSITY
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