Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities
Joint Authors
Zhang, Xu
Jiang, Bin
Zhang, Luhong
Xiao, Xiaoming
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-25
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
To study the effects of increasing and decreasing flow velocities on the fluid-elastic instability of tube bundles, the responses of an elastically mounted tube in a rigid parallel triangular tube bundle with a pitch-to-diameter ratio of 1.67 were tested in a water tunnel subjected to crossflow.
Aluminum and stainless steel tubes were tested, respectively.
In the in-line and transverse directions, the amplitudes, power spectrum density functions, response frequencies, added mass coefficients, and other results were obtained and compared.
Results show that the nonlinear hysteresis phenomenon occurred in both tube bundle vibrations.
When the flow velocity is decreasing, the tubes which have been in the state of fluid-elastic instability can keep on this state for a certain flow velocity range.
During this process, the response frequencies of the tubes will decrease.
Furthermore, the response frequencies of the aluminum tube can decrease much more than those of the stainless steel tube.
The fluid-elastic instability constants fitted for these experiments were obtained from experimental data.
A deeper insight into the fluid-elastic instability of tube bundles was also obtained by synthesizing the results.
This study is beneficial for designing and operating equipment with tube bundles inside, as well as for further research on the fluid-elastic instability of tube bundles.
American Psychological Association (APA)
Zhang, Xu& Jiang, Bin& Zhang, Luhong& Xiao, Xiaoming. 2016. Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities. Shock and Vibration،Vol. 2016, no. 2016, pp.1-20.
https://search.emarefa.net/detail/BIM-1118818
Modern Language Association (MLA)
Zhang, Xu…[et al.]. Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities. Shock and Vibration No. 2016 (2016), pp.1-20.
https://search.emarefa.net/detail/BIM-1118818
American Medical Association (AMA)
Zhang, Xu& Jiang, Bin& Zhang, Luhong& Xiao, Xiaoming. Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-20.
https://search.emarefa.net/detail/BIM-1118818
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118818