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当前位置: 首页 > 文章 > 考虑内流的海洋立管动力特性和动力响应的实验研究 海洋湖沼通报 2007 (1) 49-54
Position: Home > Articles > EXPERIMENTAL STUDY ON THE DYNAMIC CHARACTERISTIC AND DYNAMIC RESPONSE OF MARINE RISER TRANSPORTING FLUID Transactions of Oceanology and Limnology 2007 (1) 49-54

考虑内流的海洋立管动力特性和动力响应的实验研究

作  者：
王法利;董晓林;邢春雷;左达晟;朱丙波;肖吉哲
单  位：
中国海洋大学规划建设处
关键词：
模型试验;立管;涡激振动;内流
摘  要：
本文考虑管内流体和管外流体的共同作用,对海洋立管进行试验研究。试验在中国海洋大学物理海洋试验室进行,通过试验得到了立管的一些有价值的规律:随着外流流速逐渐增大,立管的一阶激振频率也逐渐增大,在一定的外流速下,会激起立管的二阶激振频率甚至于三阶激振频率,由于立管的刚度较大,内流对立管的影响并不明显。但是当外流达到一定流速,这种影响就会显现出来,内流的存在会降低海洋立管的振动频率。
译  名：
EXPERIMENTAL STUDY ON THE DYNAMIC CHARACTERISTIC AND DYNAMIC RESPONSE OF MARINE RISER TRANSPORTING FLUID
作  者：
WANG Fali DONG Xiaolin XING Chunlei ZUO Dasheng ZHU Bingbo XIAO Jizhe(Ocean University of China,Qingdao 266071)
关键词：
model test;;riser;;VIV;;internal flow
摘  要：
A model experiment on the vortex-induced vibration of riser in transporting fluid was conducted in the Physical Oceanography Laboratory of Ocean University of China in 2005.The impact test and the test in the current were all conducted in the water flume.Va- rious measures were obtained from the experiments,including frequency response,the time domain tracing of in-line and cross-flow response.The experimental results analyzed by u- sing these measures exhibit several Valuable features.One of them is that effect of the inter- nal fluid on the riser is not obvious for the riser stiffness is high,but the effect will becomes obvious when the current velocity becomes high enough,and exist of internal fluid will de- crease the oscillation frequency of the riser.Another is that the first order vibration frequen- cy becomes higher as the current varied from lower speed to higher speed,while the second, even the third order will appear when the speed is high enough.

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