互插式连栋温室风压分布模拟分析

以CFD理论为基础,建立了互插式连栋温室周围空气绕流的数学模型,设定了流体的边界条件,运用Fluent软件对互插式连栋温室的风压分布进行模拟分析。模拟结果表明,风力对温室作用主要是向上的升力;风压系数沿温室跨度方向分布的数值模拟结果与风洞试验结果基本吻合;上风向和下风向风压系数沿温室高度方向呈二次曲线分布,相关系数分别为0.975和0.990;最后将模拟得到的风压系数转换成相应的风载体型系数,为结构优化设计提供参考。

Simulation of Wind Pressure Distribution on Mutual Insert Multi-greenhouse

The mathematical model and boundary condition describing airflow around a mutual insert multi-greenhouse were established based on CFD theory. Wind pressure distribution was simulated and analyzed using Fluent software. The simulation results indicated that the primary effect on the greenhouse of wind was upward force. The numerical simulation results of wind pressure distribution along the greenhouse span were consistent with the wind tunnel test result. The wind pressure coefficient of windward and leeward was quadric distribution along the greenhouse's height, and correlative coefficient was 0.975 and 0.990 respectively. The simulative wind pressure coefficient was transformed to wind load shape coefficient, the coefficient provides reference for optimizing the structure of greenhouse.