Finite element and boundary element coupled sound wave two-dimensional numerical simulation method and device
A two-dimensional numerical and finite element method technology, which is applied in CAD numerical modeling, special data processing applications, design optimization/simulation, etc., can solve the problems of cumbersome solution for inhomogeneous media, complicated programming, difficult derivation, etc., and achieve a solution Forward simulation problems, the effect of flexible grid division
Active Publication Date: 2021-08-06
香港中文大学(深圳)城市地下空间及能源研究院
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, because the boundary element method is only subdivided at the boundary, it is cumbersome to solve the inhomogeneous medium; in addition, the coefficient matrix composed of the boundary element method is an asymmetric full-rank matrix, and the calculation efficiency is low when there are many mesh nodes; For complex problems, the basic solution is difficult to derive; programming is more complicated
[0005]
Therefore, the existing technology has the problems of low calculation efficiency and poor effect
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0051] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0052] The acoustic wave two-dimensional numerical simulation method of finite element and boundary element coupling provided in this application can be applied in the following application environments. Among them, the terminal implements a two-dimensional acoustic wave numerical simulation method coupled with finite elements and boundary elements. By obtaining the information of the area to be simulated, according to the information of the area to be studied and the preset two-dimensional scalar acoustic wave equation in the frequency domain, the Galerkin finite element ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a finite element and boundary element coupled sound wave two-dimensional numerical simulation method and device, computer equipment and a storage medium. The method comprises the following steps: establishing a finite element equation for a non-uniform medium and a complex terrain region through a Galerkin finite element method by acquiring information of a region to be simulated according to the information of the region to be researched and a preset frequency domain two-dimensional scalar acoustic wave equation; establishing a boundary element equation for the boundary areas of the air medium, the underground homogeneous medium and the finite element research area through a Green's formula; establishing a coupling equation set according to the finite element equation and the boundary element equation; and solving the coupling equation set to obtain a numerical simulation value of the sound wave field of the to-be-researched area. According to the finite element and boundary element coupling method, the advantages of the two methods are combined, the defects of the two methods are avoided, and the forward modeling problem of a complex wave field can be well solved.
Description
technical field [0001] The present application relates to the field of computer numerical simulation, in particular to a two-dimensional acoustic wave numerical simulation method, device, computer equipment and storage medium coupled with finite elements and boundary elements. Background technique [0002] Seismic exploration is a very widely used detection method. It is mainly based on the density and velocity differences of the underground medium, artificially stimulates seismic waves, and uses geophones to receive vibration signals from various observation points, and then conducts data analysis on the collected data. Process, interpret, and infer the lithology of underground formations and the possibility of oil and gas. Compared with other geophysical prospecting methods, seismic exploration has the advantages of detailed and accurate layering, high resolution, and large detection depth, and has been widely used in oil, natural gas, and solid resource exploration. [0...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23G06F2111/10
Inventor 张钱江熊彬陆裕国陈龙伟孙汉武黄学英
Owner 香港中文大学(深圳)城市地下空间及能源研究院