【作者】 许登科；

【导师】 吕品；

【作者基本信息】 安徽理工大学 ， 安全技术及工程， 2006， 硕士

【摘要】 通过查阅大量的科技文献，深入了解国内外高大空间分层空调技术的应用和研究状况。以某市体育馆高大空间分层空调设计现状为对象，先对现有分层空调系统运行工况下的气流组织分布进行实测，然后选用κ-ε双方程湍流模型对运行工况下的气流组织进行数值模拟，对比两种结果的符合程度来验证模拟所采用数学模型的可靠性。以验证后的数学模型为理论基础，某市体育馆高大空间为实际条件，设计出5种模拟方案，研究分层空调中送风高度对工作区温度和速度的影响情况；送风速度对工作区气流速度的影响情况；送风速度的大小对分层空调中形成稳定气流隔断面的影响情况。模拟的结果及其分析表明，送风高度和送风速度对高大空间分层空调工作区的温度分布和速度分布有很明显的影响，送风速度的大小对形成稳定的气流隔断面有直接的影响。最后，总结出对分层空调设计有指导意义的一些定性和定量的结论。更多还原

【Abstract】 By consulting large numbers of scientific literature, applying and researching status about large space stratified air conditioning technique has been thoroughly gained. In this paper,The object about large space stratified air conditioning design status is performed.Airflow form distribution is measured actually.and then k - e turbulence model is choosed to simulate stratified air conditioning system airflow form numerically on condition of operating.The reliability of using numerical model is proved though the comparision of results.Based on numerical model validated and large space of the gymnasium is as actual condition,five schemes is designed.The effects on temperature field and velocity field of workaround involved in the height of supplying air in stratified air conditioning is researched; The effects on airflow velocity of workaround involved in velocity magnitude of supplying air is researched; The effects on stable airflow-cutting produced by supplying velocity magnitude in stratified air conditioning is researched;The researching results showed that firstly the height and magnitude of supplying air affects the distribution of temperature field and velocity field evidently and secondly the magnitude of supplying air velocity affects forming of stable airflow-cutting directly.At last, some qualitative and quantitative conclusion that guide the design of stratified air conditioning is drawn.更多还原