Numerical simulation test method for impacting flat solid surface by double liquid drops based on VOF and dynamic grid self-adaption

A dynamic mesh and solid surface technology, applied in design optimization/simulation, CAD numerical modeling, electrical digital data processing, etc., can solve the problem that millimeter-scale double droplets hit flat solid surfaces with less research

Inactive Publication Date: 2020-05-12
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Application Information

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Problems solved by technology

However, there are few studies on millimeter-scale double droplet impacting flat solid surfaces.

Method used

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  • Numerical simulation test method for impacting flat solid surface by double liquid drops based on VOF and dynamic grid self-adaption
  • Numerical simulation test method for impacting flat solid surface by double liquid drops based on VOF and dynamic grid self-adaption
  • Numerical simulation test method for impacting flat solid surface by double liquid drops based on VOF and dynamic grid self-adaption

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] The present invention provides a numerical simulation test method based on VOF and dynamic grid self-adaptation of double droplet impacting flat solid surface, using VOF interface tracking and grid dynamic self-adaptive technology to simulate the flow process of double droplet impacting flat solid surface , which provides an accurate numerical simulation method for simulating the flow process of double droplets hitting a flat solid surface, and obtaining its flow law and flow characteristics. Such as figure 1 Shown is the program flow chart of gerris-based application of VOF interface tracking and grid dynamic adaptive technology to simulate double droplet impact on flat solid surface.

[0031] A numerical simulation test method for double droplet impacting a flat solid surface based on VOF and dynamic mesh adaptation, including the following steps:

[0032] 1...

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Abstract

The invention discloses a numerical simulation test method for impacting a flat solid surface by double liquid drops based on VOF and dynamic grid self-adaptation. The method comprises the steps thatfirstly, an ideal computational domain size is defined in gerris software, and boundary conditions of a computational domain are determined; secondly, importing a solid boundary and defining a solid boundary condition; secondly, assigning an initial condition, and giving an initialization grid; furthermore, a Cartesian grid dynamic self-adaptive refining function is used; then, resolving the wholecalculation domain, and outputting a corresponding calculation result; and finally, importing the output calculation result into the simulation result of the visualized gerris in the text. Accordingto the method, the numerical simulation method for impacting the flat solid surface by the double liquid drops based on VOF and dynamic grid self-adaptation is achieved, the flowing process of impacting the flat solid surface by the double liquid drops is obtained, and an accurate numerical calculation method is provided for analyzing the flowing rule and flow state characteristics of the flat solid surface by the double liquid drops.

Description

technical field [0001] The invention relates to the technical field of droplet wetting, in particular to a numerical simulation test method for a double droplet impacting a flat solid surface based on VOF and dynamic grid self-adaptation. Background technique [0002] The process of droplet impacting the wall and its motion and shape evolution on the wall is called the process of droplet impacting the wall, which is a typical free surface flow problem in gas-liquid two-phase flow. The mechanism of droplet impact on the wall is widely used in industry, agriculture, electronics manufacturing and other related fields, such as falling film evaporation, fuel spray, pesticide spraying and shot peening deposition. For the study of the motion, shape and dynamics of droplets hitting the wall, not only can we scientifically understand the mechanism of deposition, splashing and fragmentation in the process of droplet hitting the wall, but also obtain the critical criteria of the dynami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F113/08G06F111/10
Inventor 尹宗军苏蓉王清清许星月汪帆
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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