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下部送风是空调房间中气流组织的基本形式之一,它具有送风利用率高、节省空调能耗等一系列优点,因而近年来引起了国内外暖通界的普遍关注,并已在机理研究和工程应用上取得了一定的成果和经验。但是,过去的研究一直停留在通过实验,利用相似理论探讨其基本特征这种方法上,故得到的结论有一定的局限性。同时,对于整个流场的速度分布、温度分布缺乏全面深刻的了解,亦限制了它的推广和使用,这就提出了利用计算机对下部送风进行数值模拟的必要性。
The lower air supply is one of the basic forms of air flow in air-conditioned rooms. It has a series of advantages such as high air supply efficiency and air-conditioning energy consumption. Therefore, it has attracted widespread attention at home and abroad in the HVAC community and has been in the mechanism. Research and engineering applications have achieved certain results and experience. However, the past research has been limited to the use of similarity theory to explore the basic features of this method. Therefore, the conclusions obtained have certain limitations. At the same time, the lack of a comprehensive and profound understanding of the velocity distribution and temperature distribution of the entire flow field also limits its popularization and use. This raises the necessity of using computers for numerical simulation of the lower air supply.