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GPU acceleration-based pollutant transport high-resolution numerical simulation method

A high-resolution, numerical simulation technology, applied in the field of numerical simulation acceleration, can solve the problems of numerical model operation efficiency and poor accuracy

Pending Publication Date: 2021-01-22
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-resolution numerical simulation method for pollutant transport based on GPU acceleration, which solves the problem of poor operating efficiency and accuracy of the numerical model for studying the law of movement of pollutants in water bodies in the prior art

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  • GPU acceleration-based pollutant transport high-resolution numerical simulation method
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  • GPU acceleration-based pollutant transport high-resolution numerical simulation method

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Embodiment Construction

[0068] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0069] A high-resolution numerical simulation method for pollutant transport based on GPU acceleration, characterized in that it is specifically implemented according to the following steps:

[0070] Step 1, read the DEM terrain file composed of high-resolution unit grids, and obtain the assigned variables;

[0071] Step 2, read the initial conditions and boundary conditions, and use the finite volume method space discrete control equation to swap the variables from the CPU to the GPU;

[0072] The spatially discrete governing equations of the finite volume method include two-dimensional shallow water equations and pollutant transport equations, and the vector form of the coupling conservation format is expressed as follows:

[0073]

[0074] in,

[0075]

[0076] In formulas (1) and (2): t is time; x and y are horizontal and vertical...

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Abstract

The invention discloses a GPU acceleration-based pollutant transport high-resolution numerical simulation method, which comprises the steps of reading a DEM terrain file composed of high-resolution unit grids to obtain an assigned variable; reading an initial condition and a boundary condition, and adopting a finite volume method space discrete control equation to exchange and store a variable from a CPU to a GPU; dividing a dry-wet calculation area, and calculating flux on a unit grid interface on the GPU by adopting an HLLC approximate Riemann solver; calculating a control equation source item on the GPU; calculating the time step length of iterative updating according to the library Random number; obtaining hydraulic elements and concentration information of all the unit grids; and copying the hydraulic elements and the concentration information from the GPU video memory to a host memory and outputting the hydraulic elements and the concentration information. The problem that in theprior art, a numerical model for researching the migration movement law of water pollutants is poor in operation efficiency and precision is solved.

Description

technical field [0001] The invention belongs to the technical field of numerical simulation acceleration, and in particular relates to a high-resolution numerical simulation method for pollutant transport based on GPU acceleration. Background technique [0002] In recent years, many severe flash flood events have been reported around the world. For example, in March 2019, severe flash floods occurred in different parts of the Indonesian province of Papua, where massive flooding claimed 63 lives. In July 2012, a catastrophic rainstorm killed 79 people in Beijing, China. Due to the ferocity and unpredictability of flash floods, it poses a great threat to human life and property. Floods also had a profound impact on the city. In cities, large floods can damage sewage treatment plants or other facilities that release pollutants, and can also pose significant risks to public health and the local economy. Therefore, mastering the transport process of pollutants has important g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06T17/05G06F111/10
CPCG06F30/23G06T17/05G06F2111/10
Inventor 石宝山侯精明康永德王俊珲郭敏鹏纪亚星石佳李钰茜高徐军张兆安苏锋王兴桦杨露杨霄白岗岗杨少雄
Owner XIAN UNIV OF TECH
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