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Numerical Simulation Method of Magnetic Field Gradient Tensor for Complicated Magnetic Body with Arbitrary Magnetic Susceptibility Distribution

A magnetic field gradient, numerical simulation technology, applied in CAD numerical modeling, design optimization/simulation, special data processing applications, etc. Joint inversion requirements, inability to accurately calculate the internal magnetic field of the field source, low calculation accuracy, etc., to achieve the effect of satisfying fine inversion, high calculation efficiency and calculation accuracy, and improving calculation accuracy

Active Publication Date: 2020-01-14
CENT SOUTH UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a numerical simulation method for the magnetic field gradient tensor of a complex magnetic body with arbitrary magnetic susceptibility distribution. This invention solves the problem of low calculation accuracy and long calculation time of the current magnetic field gradient tensor numerical simulation method, which cannot accurately calculate the internal magnetic field of the field source. , unable to meet the technical problems of fine inversion of large-scale observation data, human-computer interaction modeling interpretation and joint well-field inversion

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  • Numerical Simulation Method of Magnetic Field Gradient Tensor for Complicated Magnetic Body with Arbitrary Magnetic Susceptibility Distribution
  • Numerical Simulation Method of Magnetic Field Gradient Tensor for Complicated Magnetic Body with Arbitrary Magnetic Susceptibility Distribution
  • Numerical Simulation Method of Magnetic Field Gradient Tensor for Complicated Magnetic Body with Arbitrary Magnetic Susceptibility Distribution

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[0047] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0048] see figure 1 , the method for numerically simulating the magnetic field gradient tensor of any complex magnetic body with magnetic susceptibility distribution provided by the present invention comprises the following steps:

[0049] Step S100: Establish a prism model including the target area, divide the prism model into multiple prisms, set the magnetic susceptibility for each prism, and calculate the magnetization of each prism to obtain a combined prism model;

[0050] Complex magnetic body model representation: establish a regular prism model containing the target area, so that the target area (including undulating terrain) is completely embed...

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Abstract

The invention provides a numerical simulation method for a magnetic field gradient tensor of a magnetic substance with complex random magnetic susceptibility distribution. The method comprises the following steps: establishing a prism magnetic substance model; calculating the magnetic field gradient tensors of all the prisms in the prism magnetic substance model; and summing, thereby acquiring an overall magnetic field gradient tensor of the magnetic substance model. According to the method provided by the invention, the efficiency and precision of the analog computation for the magnetic field can be simultaneously guaranteed; the method can meet the requirements for large-scale data three-dimensional magnetic susceptibility fine inversion, man-machine interaction modeling and explanation; according to the invention, the accurate numerical simulation for the magnetic field gradient tensor in a field source can be realized; and the method is beneficial to the research on the exploratory well joint inversion through a magnetic method.

Description

technical field [0001] The invention relates to the technical field of a magnetic field gradient tensor numerical simulation method, in particular to a magnetic field gradient tensor numerical simulation method of a complex magnetic body with arbitrary magnetic susceptibility distribution. Background technique [0002] Magnetic prospecting is an important technical means in geophysical prospecting, and plays an important role in regional geological survey and general prospecting. This method measures the magnetic anomaly caused by the difference in magnetic susceptibility of rocks, ores, etc., inverts and interprets the measured data, and then studies the distribution laws of geological structures and mineral resources. With the continuous development of sensor technology, the magnetic field gradient tensor measurement technology is becoming more and more mature. Compared with magnetic anomalies and magnetic field three components, the magnetic field gradient tensor has hig...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20
Inventor 陈龙伟张钱江强建科戴世坤
Owner CENT SOUTH UNIV
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