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Three-dimensional thunder-and-lightning fractal structure numerical simulation method applicable to numerical weather mode

A numerical weather and fractal structure technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not simulating fractal structure, and achieve the effect of improving lightning forecast accuracy and simulation ability.

Inactive Publication Date: 2016-06-08
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

The parameterization scheme is implemented by introducing a random fractal algorithm based on MacGorman's parameterization scheme, but it does not simulate the fractal structure in the actual lightning process

Method used

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  • Three-dimensional thunder-and-lightning fractal structure numerical simulation method applicable to numerical weather mode
  • Three-dimensional thunder-and-lightning fractal structure numerical simulation method applicable to numerical weather mode
  • Three-dimensional thunder-and-lightning fractal structure numerical simulation method applicable to numerical weather mode

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] In recent decades, with the advancement of lightning detection technology and numerical simulation level, people have done a lot of research on the electrical process in thunderstorm clouds. What is the process of electrification in a thunderstorm cloud? What factors affect the properties of lightning? Some achievements have been made in the research on these basic problems of thunderstorm electricity at home and abroad, but there are still many places that have not been studied clearly. Due to the randomness, complexity and high danger of lightning, the actual observation and research of lightning encounter many problems. With the development of electronic information technology, it has become possible to use numerical simulation to study the lightning process in thunderstorm clouds. The parameterized model of lightning in thunderstorm clouds is no...

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Abstract

The present invention provides a three-dimensional thunder-and-lightning fractal structure numerical simulation method applicable to a numerical weather mode. The method comprises the following steps: (1) setting a lightning start breakdown threshold; (2) enabling a lightning to bidirectionally propagate after the lightning is triggered at a start breakdown point, so as to form a lightning propagation channel; (3) determining the type of the lightning; and (4) allocating space charges again. The method provided by the present invention implements numerical simulation of a three-dimensional thunder-and-lightning structure, is capable of simulating a fractal structure similar to natural intracloud flashes and cloud-to-ground, and is capable of simulating a reducing effect of a lightning process on intracloud electric fields.

Description

technical field [0001] The invention relates to a three-dimensional lightning numerical simulation method, in particular to a three-dimensional lightning fractal structure numerical simulation method suitable for numerical weather models. Background technique [0002] Most of the early lightning numerical models did not simulate the lightning channel, but only artificially and quantitatively reduced the electric field or the net charge concentration was greater than a given threshold [0003] The charge in the area of ​​, does not consider the propagation process of the lightning channel, and considers the neutralization effect of lightning on the charge of the thunderstorm cloud as a whole. Such schemes are simple and easy to implement, but lack physical basis. A number of proposals that have subsequently emerged have considered the development of Lightning channels. For the first time, Helsdon et al. applied the two-way leader concept proposed by Kasemir in the two-dimen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 王昊亮刘玉宝冯双磊王勃靳双龙马振强胡菊宋宗朋王伟胜刘纯杨红英车建峰王铮姜文玲卢静张菲赵艳青
Owner CHINA ELECTRIC POWER RES INST
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