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Irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation

A mapping method and temperature field technology, applied in the field of grid mapping, can solve the problems of grid subdivision accuracy and different shape requirements, and achieve the effect of improving calculation time and accuracy and reducing the number of grids

Active Publication Date: 2014-03-05
CHINA THREE GORGES UNIV
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a special-shaped grid mapping method in the electromagnetic field-flow field-temperature field coupling calculation, and propose a special-shaped grid mapping method to deal with the data transfer problem between the inconsistent grids of the overall model in the coupling field analysis , to solve the problem that different physical fields have different requirements for grid subdivision accuracy and shape, and can realize data transfer between different physical fields using different types of grids, greatly reducing the number of grids, and improving calculation time and accuracy

Method used

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  • Irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation
  • Irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation
  • Irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation

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Embodiment Construction

[0030] Such as figure 1 Shown, the inventive method is made up of following steps:

[0031] 1) Establish the geometric model (field model) of the research object in the calculation of the flow field-temperature field, and discretize the model into a quadrilateral finite element grid according to the characteristics of fluid motion in the theory of fluid mechanics;

[0032] 2) Read the coordinate values ​​(x, y) of each node of each discrete grid in the model in counterclockwise order, and save them in file A (A.txt);

[0033] 3) Re-establish the geometric model of the research object in the calculation of the electromagnetic field (that is, the field model), and discretize the model into a triangular finite element grid according to the characteristics of the magnetic field distribution in the electromagnetic field theory;

[0034] 4) Perform numerical calculations on the following electromagnetic field equations (1), (2):

[0035]

[0036] ▿ × ...

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Abstract

An irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation comprises the following steps of 1 establishing a flow field-temperature field calculation model; 2 reading node coordinate values of discrete units of the model; 3 re-establishing a geometric model of a research object in the electromagnetic field calculation, performing model discrete to form a triangular finite element mesh and performing electromagnetic field value calculation; 4 mapping power consumption onto units in a temperature field; 5 obtaining a mapping correction factor; using power consumption densities of the units as loads to be loaded into the temperature field for solution and calculation, and obtaining a temperature result; accordingly obtaining the power consumptions of the units in the temperature field. By adopting the irregular mesh mapping method used in the electromagnetic field-flow field-temperature field coupling calculation, data transfer of different types of meshes can be adopted in different physical fields, the mesh number is greatly decreased, and the calculation time and the calculation accuracy are shortened and improved.

Description

technical field [0001] The invention relates to a grid mapping method, in particular to a special-shaped grid mapping method in electromagnetic field-flow field-temperature field coupling calculation. Background technique [0002] The most prominent contradiction in the multi-physics field coupling system is the different characteristic requirements of each physics field for grid discretization and the data mapping between grids. The traditional processing methods are divided into two types. When solving each physical field separately, if different finite element models are established according to their respective characteristic methods, it is impossible to directly read the calculation results of the units or nodes in a one-to-one correspondence during coupling. Using the average load loading method, especially for the real-time solution of time-domain transient multi-physics field coupling problems (especially containing medium motion, fluid flow, etc.), this loading meth...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张宇娇李杰黄雄峰
Owner CHINA THREE GORGES UNIV
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