空调房间气流的随机分析方法

STOCHASTIC ANALYSIS METHOD OF THE AIR VELOCITY IN THE AIR CONDITIONED ROOM

本文以随机过程理论为依据,用频谱分析和相关分析为手段,提供了一个评价空调房间气流速度的新方法。用它可以求得气流速度任频域内的频幅谱特性、能量分布特性、以及时间与空间上的相关特性和涡旋尺度等。可以较全面和深刻地描述出房间气流的紊动结构特性,为探索房间气流的紊动结构同人体热舒适、工作效率之间的关系;微尘粒子在房间气流中的漂浮与沉降规律;能量在气流中的分布、传播和耗散,提出了新的参考方法和思路。

This paper develops a new method to evaluate air velocity in air conditioned room by means of frequency spectrum analysis and correlation analysis based on random process theory,With this method.we can obtain the frequency amplitude spectrum property and energy distribution property of air velocity in frequency domain,the correlation property on time and space,the rule of eddy,etc.,Also,the turbulent structure of indoor air can be described deeply and comprehensively.It provides a new reference method and train of thought for researching the relationship between turbulent structure of indoor air and thermal comfort, work efficiency of people,revealing the floating and descending rule of fine particle in air flow,studying the distribution,propagation and dissipation of energy of indoor air.