Gravitational field numerical simulation method and device based on complex terrain and computer equipment

A complex terrain and numerical simulation technology, applied in CAD numerical modeling, electrical digital data processing, design optimization/simulation, etc., can solve problems such as poor adaptability, and achieve flexible grid division
CN112800657AActive Publication Date: 2021-05-14CENT SOUTH UNIV
7 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2021-05-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a gravitational field numerical simulation method and device based on complex terrains, computer equipment and a storage medium. The method comprises the following steps: constructing a three-dimensional cuboid model containing a complex terrain and an exploration target, performing mesh generation to obtain a plurality of small cuboids, and setting spatial domain density values of the small cuboids; obtaining an offset wave number according to grid parameters of grid subdivision and preset Gaussian parameters, dividing the three-dimensional cuboid model into a lower part model and an upper part model according to topographic information, performing block superposition to calculate a frequency domain gravity anomaly field of a plurality of observation surfaces, and performing two-dimensional Gaussian Fourier inversion to obtain spatial domain gravity anomaly fields of multiple observation surfaces, and obtaining a spatial domain gravity anomaly field of the complex topographic relief surface through a spline interpolation algorithm. The vertical direction is reserved in a spatial domain, mesh generation is flexible, the method and device are suitable for simulating complex terrains and complex geologic bodies, multiple offset wave numbers are convenient for parallel calculation, and the gravity anomaly calculation efficiency is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to the technical field of computer numerical simulation, in particular to a method, device, computer equipment and storage medium for numerical simulation of gravity field based on complex terrain. Background technique

[0002] At this stage, due to the increase of gravity observation data, the memory and calculation required for gravity field forward modeling have increased sharply, which is difficult for ordinary computers to realize, and has become a difficult problem for rapid three-dimensional density imaging.

[0003] At present, the space domain method is still dominant due to its accuracy, but with the application of the standard FFT edge expansion method and NUFFT in the forward numerical simulation of gravity anomaly, the frequency domain method has become the processing method due to its simplicity, accuracy and high efficiency. The preferred method for large-scale forward modeling. Literature (Chai Y , Hinze...

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