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Magnetotelluric simulation method and device based on non-fitting grid and storage medium

A magnetotelluric and grid technology, applied in the field of computer-readable storage media and magnetotelluric simulation devices, can solve the problems of high-quality body-fitted grid difficulty, time-consuming engineering personnel, increased calculation difficulty, etc., so as to reduce the amount of calculation. , to meet the simulation needs and improve the accuracy of the effect

Pending Publication Date: 2022-07-29
ACAD OF MATHEMATICS & SYSTEMS SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] On the one hand, geometric error is introduced when the grid is discretized, and when the geometric error is too large, it will directly affect the final calculation accuracy; on the other hand, for complex structures, it is extremely difficult to generate high-quality body-fitted grids , often consumes a lot of time for engineers; thirdly, the above method only has first-order accuracy, and for three-dimensional problems, if you want to obtain calculation results with higher accuracy, it will bring a huge amount of calculation and greatly increase the calculation time. difficulty

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[0033] The specific implementations of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0034] The terms "system" and "network" in the embodiments of the present invention may be used interchangeably. "Plurality" refers to two or more than two, and in view of this, in the embodiment of the present invention, "plurality" may also be understood as "at least two". "And / or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally in...

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Abstract

The invention discloses a magnetotelluric simulation method and device based on a non-fitting grid and a storage medium. The method comprises the steps of obtaining initial non-fitting grid information; determining a physical field with singularity; calculating and determining a de-singular physical field based on the initial non-fitting grid information; obtaining characterization information of magnetotelluric; and performing numerical calculation on the magnetotelluric characterization information based on the odd physical field and the de-odd physical field to obtain a corresponding simulation result. The calculation area of the three-dimensional earth is determined in a non-fitting grid mode, compared with a fitting grid method in the prior art, geometric errors in the calculation process can be effectively reduced, meanwhile, the calculation amount in the calculation process is reduced, and therefore the calculation efficiency is improved; and on the other hand, the geomagnetic simulation process of the three-dimensional earth is optimized and decomposed by adopting a field decomposition mode, so that the error of a numerical solution can reach the theoretical high-order precision, the accuracy of a simulation result is effectively improved, and the actual simulation requirement is met.

Description

technical field [0001] The invention relates to the technical field of geological simulation, in particular to a non-fitting grid-based magnetotelluric simulation method, a non-fitting grid-based magnetotelluric simulation device, and a computer-readable storage medium. Background technique [0002] Magnetotelluric exploration is a method of using natural changing electromagnetic fields or artificially established stable electromagnetic fields to study geological structures. For example, typical calculation methods include DC resistivity methods, which mainly generate electromagnetic field data by measuring artificially established stable current fields, based on numerical values. The calculation method can obtain the distribution law of rocks or ores with different electrical conductivity in the crust, so as to solve ore prospecting and other geological problems. [0003] In the process of application, the forward calculation of the direct current method requires solving th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23G06F2111/10
Inventor 崔涛张林波龚伟周新鑫
Owner ACAD OF MATHEMATICS & SYSTEMS SCIENCE - CHINESE ACAD OF SCI
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