期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：2
页码：186-194
DOI：10.12913/22998624/106243
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：An experimental study on the incident flow angle effects on the vibration behavior was carried out on aluminum tubein parallel triangular tube bundle with P/D ratio of 1.375. Fluid elastic instability is the most fatal mechanism fromall the vibration mechanisms and therefore must be dealt with a lot of attention. Experiments were performed on lowspeed water tunnel with the velocity of water ranges from 0.3 m/s to 0.7 m/s. The experiments were designed in aunique way to study the effects of incident flow angle on the vibration behavior. The monitored tube was mountedflexibly in an array of rigid tubes. The experiments were conducted on a flexible tube for different velocities rangingfrom 0.3 m/s to 0.7 m/s with different array rotated angles (0 to 90 degrees). It was observed that the vibration levelwas signifcantly high at 75 degree confguration as compared to other rotated angle confgurations. It was also observed that the damping response is dispersed with all positive values, indicating that there is no instability in the tube.
