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Virtual medium method, device and equipment applied to low-voltage interface processing

A technology of interface processing and interface, which is applied in the field of computational fluid dynamics, can solve the problems of large calculation amount and long calculation time, and achieve the effect of improving calculation speed

Pending Publication Date: 2020-10-16
三多(杭州)科技有限公司
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  • Application Information

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Problems solved by technology

[0004] The present application provides a virtual medium method, device and equipment applied to low-pressure interface processing to solve the problems of large amount of calculation and long calculation time in the existing virtual medium method for the low-pressure area near the water-solid interface

Method used

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  • Virtual medium method, device and equipment applied to low-voltage interface processing
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  • Virtual medium method, device and equipment applied to low-voltage interface processing

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Embodiment

[0056] see figure 1 , figure 1 It is a schematic flow chart of a virtual medium method applied to low-pressure interface processing provided by the embodiment of the present application, and the method is used to simulate the compressible flow problem of multiphase and multimedia. Such as figure 1 As shown, the method includes the following steps:

[0057] S101: Obtain the flow field state value of the previous time step as an initial value, where the flow field state value includes density, velocity, pressure and total energy;

[0058] Specifically, in this embodiment, when simulating the flow field, it is usually carried out in a computer, and the initial conditions of the flow field are set (input) by the user, including the respective densities, velocities, pressures, and total energies of various media, Then based on the set conditions, when all the parameter values ​​of a certain time step are known, the flow field state value of the next time step can be calculated b...

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Abstract

The invention relates to a virtual medium method, device and equipment applied to low-pressure interface processing, which are used for simulating the problem of compressible flow of multi-phase multi-media. The method comprises the following steps: acquiring a flow field state value of a previous time step as an initial value; initializing the flow field based on the initial value; based on a control equation of the compressible fluid in the Euler coordinate system in the two-dimensional general problem, calculating a flow field state value far away from the material interface position; and if the pressure in the flow field state value of the material interface position in the previous time step is smaller than a preset pressure threshold, calculating the flow field state value of the material interface in the current time step based on an explicit algorithm. Through the arrangement, compared with a traditional interface iterative algorithm (implicit algorithm), on the premise that enough calculation precision is guaranteed, the calculation speed can be effectively increased, and therefore the method can be well applied to actual engineering problems.

Description

technical field [0001] The present application relates to the technical field of computational fluid dynamics, in particular to a virtual medium method, device and equipment applied to low-pressure interface processing. Background technique [0002] With the development of computers, an interdisciplinary subject between mathematics, fluid mechanics and computers has emerged, namely computational fluid dynamics. The main research content of this subject is to solve the control equations of fluid mechanics through computer and numerical methods. Mechanical problems are simulated and analyzed. For example, the hydrodynamic parameters in the process of underwater blasting are simulated by computer, so as to facilitate the improvement and optimization of the actual operation process of blasting. [0003] The ghost fluid method (Ghost Fluid Method, GFM) has been considered to be the most successful method for dealing with multi-media compressible fluid-substance interfaces. The k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F2119/14G06F2113/08Y02T90/00
Inventor 谢文锋
Owner 三多(杭州)科技有限公司
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