Vol. 23 No. 1 (2020) Cover Image
Vol. 23 No. 1 (2020)

Published: March 31, 2020

Pages: 61-67

Articles

Experimental Investigation for The Flow Induced Vibration for Pipe Inside Water

Haitham Mohsin Salman 1 Ansam Adel Mohammed 2
1 Mechanical Department, Al-Nahrian University, Baghdad, Iraq.
2 College of Engineering, Al-Nahrain University
History
  • Received: October 30, 2019
  • Revised: December 8, 2019
  • Accepted: January 29, 2020
  • Available Online: March 20, 2020
DOI

https://doi.org/10.29194/NJES.23010061

Abstract

Forced vibration has been experimentally investigated on a model consists of circular pipe with1.6m length. The pipe built in tank (1.2m length, 0.6m height and 0.6m width) horizontally at 0.4m height with two different diameters d=15mm and d=35mm. The pipe conveying laminar flow in the fully developed region, of Reynolds number equals 2000. The experimental results of span pipe conveying water at five stations of forced excitation vibration were studied. The harmonic forced vibration with two different excitation frequencies (10 Hz and 15 Hz) are imposed at all of the five locations. The distance between two stations is (0.2m). Two conditions of pipe environment have been applied, the first in air and the other was immersed in water. It is concluded that the effect of flow induced vibration due to the pipe conveying fluid increases the maximum deflection when the fluid speed increases. The water surrounds the pipes reduce the effect of excitation vibration about (33 – 46%). The effect difference between the excitation frequencies was about (4 – 7%).

Keywords

References

  1. H. Ashley & G. Havilland, "Bending Vibrations of a Pipe Line Containing Flowing Fluid ", Journal of Applied Mechanic, Vol.17, pp.229-232, 1950.
  2. G. W. Housner, "Bending Vibrations of a Pipe Line Containing Flowing fluid ", Journal of Applied Mechanic, Vol.19, pp.205-208, 1952
  3. F. I. N. Niordson, "Vibrations of a Cylindrical Tube Containing Flowing Fluid", K. Tek. Högsk. Handl, No.2, 1953
  4. Mohsen J. Jweeg, Albert E. Yousif and Mahmud R. Ismail” Experimental Estimation of Critical Buckling Velocities for Conservative Pipes Conveying Fluid” Al-Khwarizmi Engineering Journal, Vol. 7, No.4, PP 17 -26 (2011)
  5. Hongjun Zhu, Yue Gao and Honglei Zhao “Experimental investigation on the flow-induced vibration of a free-hanging flexible riser by internal unstable hydrodynamic slug flow” Ocean Engineering, Volume 164, Pages 488-507. 2018
  6. Dayang Wang, Chengqing Wu and Wencheng Huang, “Vibration investigation on fluid-structure interaction of AP1000 shield building subjected to multi earthquake excitations” Annals of Nuclear Energy 126:312-329 · January 2019
  7. Sally M. Smith, Matthew J. Rhodes, Brent S. Taft, and Emil V. Ardelean. "Experimental Investigation of Flow-Induced Vibrations of an Oscillating Heat Pipe", Journal of Thermophysics and Heat Transfer, Vol. 31, pp. 871-877. https://doi.org/10.2514/1.T5020 ,2017
  8. S. M. Khot, P. Khaire and Abhishek S. Naik “Experimental and simulation study of flow induced vibration through straight pipes” International Conference on Nascent Technologies in Engineering (ICNTE) ieeexplore.ieee.org/abstract/document/7947938 ,2017
  9. Y. Soe, G. Bethany, and P. Robert, "Vibration Analysis of a Sinusoidally Driven System" University of Pennsylvania, www.seas.upenn.edu, 1997
  10. S. I. Lee and J. Chung "New Non-Linear Modelling for Vibration Analysis of a Straight Pipe Conveying Fluid" Journal of Sound and Vibration, Vol.254, No.2, pp. 313-325, 2002.
  11. X. Wang and F. Bloom "Stability Issues of Concentric Pipes Containing Steady and Pulsatile Flows" Journal of Fluids and Structures, Vol.17, pp.1-16, 2001.
  12. Adrian Bejan "Convection Heat Transfer" 3rd edition, 2004.
  13. Ansam A. Mohammed “The Effect of Induced Vibration on the Flow Properties in a Pipe Fitted with an Orifice”, Ph.D. Thesis, Al-Nahrain University, 2006.