Calculation method for target release position of liquid drop on single object surface

Abstract

The invention is suitable for the technical field of liquid drop impact characteristic simulation, and provides a calculation method for a target release position of a liquid drop on a single object surface, and the method comprises the steps of obtaining all grid corner point information and initial impact information, wherein the distance between an initial impact point and any grid corner point is smaller than a preset distance threshold value; obtaining adjacent impact information according to the initial impact information, wherein the distance between an adjacent impact point and any adjacent grid corner point is smaller than a preset distance threshold value; marking the corresponding release position of the impact point on the single object surface as the release position in the impact domain; marking corresponding release positions, not located on the single object surface, of the impact points as impact boundary release positions; and taking the adjacent impact information as initial impact information until the release positions in all the impact information on the single object surface are marked, so as to obtain the target release position of the liquid drop on the single object surface. The target release position calculation method provided by the invention has the characteristics of simplicity, high efficiency, good robustness and high precision.

Description

technical field [0001] The invention belongs to the technical field of droplet impact characteristic simulation, and in particular relates to a method for calculating a target release position of a droplet on a single surface. Background technique [0002] Numerical simulation of icing in aircraft icing is an important means to study the characteristics of aircraft icing, and the calculation process of aircraft icing numerical calculation involves the calculation of surface droplet collection rate, and the calculation accuracy of droplet collection rate will directly affect to the accuracy of ice shape prediction results. At present, the numerical calculation models adopted for the droplet impact problem are usually divided into two categories: Lagrangian method and Euler method. [0003] In the prior art, the following two methods are usually used to improve the calculation efficiency of the three-dimensional droplet collection rate: ① describe the droplet array by establi...

AI Technical Summary

Problems solved by technology

However, in actual simulation, the distribution of droplet impact points is usually random and scattered and partly distributed on the wall, which results in uneven distribution or small number of sample points. If this is used as a calculation sample, it will greatly reduce the interpolation of the droplet collection rate The accuracy of the result, there is human intervention in the interpolation result, and it has a large unreliability

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