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A Method for Simulating Bleeding and Handling Acceleration in Smooth Particle Hydrodynamics

A technology of fluid dynamics and smooth particles, which is applied in the fields of fluid dynamics and medical imaging, can solve the problems of unsatisfactory real-time performance and simulation effect, and large amount of blood calculation, so as to improve the calculation of blood generation and clearance, and increase the calculation speed , the effect of reducing the amount of calculation

Active Publication Date: 2021-05-18
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] In order to solve the problem of unsatisfactory real-time and simulation effects caused by the large amount of blood calculation in the existing system, the present invention uses the CUDA instruction set as a GPU acceleration technology to improve the calculation speed

Method used

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  • A Method for Simulating Bleeding and Handling Acceleration in Smooth Particle Hydrodynamics
  • A Method for Simulating Bleeding and Handling Acceleration in Smooth Particle Hydrodynamics
  • A Method for Simulating Bleeding and Handling Acceleration in Smooth Particle Hydrodynamics

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Embodiment Construction

[0090] The present invention will be further described below in conjunction with accompanying drawing.

[0091] refer to figure 1 and figure 2 , a method for accelerating the entire process of hemorrhage and blood clearance for smoothed particle hydrodynamic simulations, comprising the following steps:

[0092] For simulation of bleeding:

[0093] Step 1, using the PCISPH method to model particles, the process is as follows:

[0094] 1.1 The high simulation of bleeding simulation depends on the force of the particles in the bleeding system, so it is necessary to analyze the force of each particle, and the properties of a single particle will "diffuse" to the surroundings, and gradually decrease as the distance decreases . We use flat and normalized kernels because they enable second-order-accurate interpolation. We designed the following kernel functions:

[0095]

[0096]

[0097]

[0098] 1.2 The forces experienced by a single particle are respectively, where...

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Abstract

A method for smooth particle fluid dynamics simulation of bleeding and processing acceleration, using a simulation method based on GPU acceleration to simulate bleeding in virtual surgery and the effect of using the siphon principle to suck out blood; at the same time, using the grid method to divide the problem in real time Area, create a space grid with the support domain as the side length, search the nearest neighbor particles through the adjacent grid, and complete the solution of the particle control equation and the calculation of the interaction between blood and solids through the parallel computing architecture (CUDA) multi-threaded parallel acceleration technology , greatly improving the computing efficiency, thereby improving the real-time performance of surgical training. In addition; an improved moving cube algorithm (marching cube) is used for the rendering of fluid surfaces, which greatly improves the realism of surgical training.

Description

technical field [0001] The invention relates to the fields of medical imaging and fluid dynamics under computer graphics, in particular to a GPU-accelerated fluid generation and a simulation analysis method for oozing blood by using the siphon principle when erasing is required. Background technique [0002] With the development of computer hardware and the advancement of medical imaging technology, virtual reality has an increasing influence in the medical field. Having advanced virtual reality technology is an indispensable symbol of this era. Virtual reality technology is a technology that highly simulates reality through computer graphics and other disciplines. In the medical field, it is currently being widely used in the research of medical simulation training. The simulation fidelity of virtual reality technology mainly depends on the simulation effect of the model and the fluency of operation. The simulation of blood in virtual training systems traditionally employs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06T1/20G06T17/30
Inventor 冯远静唐良甫张弛肖昌盛朱珂权曾庆润曹喆文
Owner ZHEJIANG UNIV OF TECH
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