Optimal Grid Design system and Method for computational fluid dynamics model for buildings

摘要

An optimal grid design system for a building-customized computational fluid dynamics model is disclosed. The disclosed grid design system includes: a shape information input module for extracting shape information for a target space from an input building shape, and calculating a characteristic length based on the extracted shape information; a turbulence parameter setting module for calculating turbulence energy (k) based on the input wind speed information and calculating a turbulence energy extinction rate based on the characteristic length received from the shape information input module and the turbulence energy; a grid design module for designing a grid model based on the characteristic length and grid resolution, and designing each grid model for each grid resolution; An airflow analysis simulation to which the turbulence energy and the turbulence energy extinction rate are applied is performed on each grid model for each grid resolution transmitted from the grid design module, and flow velocity data for each coordinate at predetermined intervals for each grid model for each grid resolution is performed. simulation module to extract; The optimal grid resolution is selected by calculating and evaluating the flow velocity trend and the relative error rate for each grid model for each grid resolution based on the flow velocity data for each coordinate for each grid model for each resolution transmitted from the simulation module. and an optimal grid determination module for calculating an optimal grid size through resolution.