低温送风空调系统的数值模拟分析

Numerical Simulation Analysis of Cold Air Distribution System

利用流体数值模拟软件Fluent,对一空调形式为低温送风空调系统的实际工程进行研究。利用Fluent建模软件以实际工程相应尺寸建立一个三维物理模型,并对物理模型进行简化,选择合适的湍流模型、建立合适的风口模型、选择合适的边界条件。然后利用数值模拟方法对该模型的室内气流组织进行模拟,得到工作区内温度场、速度场、污染物浓度场的分布情况,并对工作区的舒适性和空气品质进行了评价。通过数值模拟表明采用低温送风空调系统可以满足室内热舒适要求,具有较好的室内空气品质,对工程实际有一定的指导意义。

Based on an actual project,the application of cold air distribution system is expounded by using the numerical simulation method. The Fluent software is applied to establish a three-dimensional physical model,simplify the physical model,establish proper tuyere model,choose the appropriate turbulence model,select the appropriate boundary conditions. Then the indoor airflow organization is simulated,getting the distribution of temperature field,the distribution of velocity field and the distribution of pollutant concentration field in the working area,and the degree of comfort and air quality in the working area is evaluated. The numerical simulation shows that the cold air distribution system could meet the requirements of indoor thermal comfort and good indoor air quality,with certain guiding significance for engineering practice.