Dimension increasing type computing fluid grid generation method based on line and plane body

Abstract

The invention discloses a dimension increasing type computing fluid grid generation method based on a line and plane body, which comprises the following steps: firstly, carrying out geometrical characteristic analysis on a calculation domain and a model, obtaining a fine structure needing refining processing, and sequentially setting grid parameters according to a dimension increasing sequence ofthe line, the plane and the body under the condition of finishing global grid setting. After the generation of the shell grid is completed, the grid quality of the shell grid is checked for the firsttime, if the grid quality does not meet the preset requirement, lines and the shell grid are reset and drawn, and if the grid quality meets the requirement, volume grid division is carried out. According to the method disclosed by the invention, under the condition that the number of grids is not greatly increased, the grid quality at local details of the geometry can be improved, so that computerresources can be saved, and the timeliness of CFD simulation is improved.

Description

technical field [0001] The present invention relates to a calculation fluid simulation method, more specifically, to a dimension-increasing calculation fluid grid generation method based on a linehedron. Background technique [0002] The rapid development of computer technology provides good development opportunities for ocean engineering and computational fluid dynamics. One of the important issues is how to generate meshes around complex shapes. The hull surface meshing methods continue to emerge, and the existing technologies typically include the following two methods: [0003] 1. First, according to the known value data, the half-section profile line of each station is constructed into a cubic parametric spline curve with cumulative chord length, and then the equal chord length division method is adopted. The corresponding parametric coordinates of the interpolation nodes are calculated according to the input vertical grid number of the half-section of each station, a...

AI Technical Summary

Problems solved by technology

[0005] In addition to the above defects, the above two methods have a large amount of calculation. In the case of relatively insufficient computing resources, it is difficult to ensure the accuracy of grid division, which affects the simulation effect and credibility.

Images