Authors

Abstract

Grid independence verification was implemented to improve the reliability of CFD numerical simulation in pigsty. The effects of four different grid numbers on airflow and temperature simulation of 0.4m, 1.0m and 1.6m heights were compared. The results showed that the third method of mesh generation and the grid numbers about 2.09 million were more suitable for this pigsty model. The average relative error of airflow velocity and temperature between the simulated and the measured alues were 7.1% and 3.8% respectively, the average NMSE were 0.0012 and 0.0066 respectively. Therefore, grid independence verification is of great significance for CFD numerical simulation.

Abstract in Chinese

为了提高猪舍CFD数值模拟的可靠性，对猪舍网格独立性进行了验证。比较了四种不同网格数对0.4m、1m和1.6m高度的气流和温度场模拟的影响。结果表明,第三种网格生成的方法和大约209万的网格数量更适合该猪舍模型。气流速度、温度的模拟值和实测值的平均相对误差分别为7.1%和3.8%,均方误差分别为0.0012和0.0066。可见，网格独立性验证对提高CFD数值模拟的可靠性具有重要的意义。