摘要
对直角三角翼纵向涡旋发生元LVG(Longitudinal Vortex Generator)的强化换热进行了研究. 结果表明,在一定的雷诺数范围内,直角三角翼纵向涡旋发生元的冲击角、翼高、翼宽及宽高比等几何参数是影响传热强化的主要因素,存在最佳冲击角,宽高比只是一个形状因子,翼高或翼宽的变化会影响换热的效果.将LVG与扰流柱和矩形低肋换热表面的性能作了对比性实验, 在其他条件相同的情况下,LVG强化换热的效果优于扰流柱和矩形低肋.
This paper focuses on the study of heat transfer enhancement of a confrontingly arranged pair of delta-winglet longitudinal vortex generator(LVG). In the experimental range of Reynolds number, the effect of attack angle, the height and width of wing-let on the heat transfer performance were experimentally investigated, and the best angle of attack was obtained. The results show the aspect ratio can be taken only as a shape factor and the change of height and width can affect the heat transfer effect. Moreover, the performances of three kinds of heat transfer surfaces set by LVG, turbulent pins and low rectangular fins were compared. The results show that the heat performance of heat transfer by LVG is better than that by turbulent pins and low rectangular fins.
出处
《上海理工大学学报》
CAS
北大核心
2001年第3期283-285,共3页
Journal of University of Shanghai For Science and Technology
关键词
强化传热
纵向涡旋发生元
扰流柱
矩形低肋
heat transfer enhancement
delta-winglet longitudinal vortex generator
turbulent pins
low rectangular fins
