贯流风机流场的实验和数值研究

贯流风机流场的分析研究是对其进行结构调整、性能优化的前提。本文运用烟迹和闪光照相的方法对贯流风机的内部流动进行了流场显示研究，得到了瞬态流场照片，并通过多点总压和静压测量得到了速度分布。本文还对贯流风机的流场进行了数值模拟。结果表明：数值计算与实验结果符合得较好，这两者的结合是研究贯流风机流动和改进其性能的有效手段。本文最后就贯流风机的噪声进行了初步研究，得出了一些有价值的结果。

Experimental and Numerical Investigation on the Flow Field of a Cross-Flow Fan

A special device was designed to visualize the inner flow of a cross-flow fan. Smoking-tracing technique and spark photography were used. Clear photo of instantaneous flow field was obtained. Based on the measurement of total and static pressure at various locations throughout the flow field,the velocity distribution was also figured out. A numerical simulation was performed to get more imformation of the flow. The experiment and the numerical simulation were in good agreement, and it was found that the combination of experiment and numerical simulation is useful way for the investigation of cross-flow fan.