Experiments have been carried out on free-to-rotate parallel plates fitted to a rigid section of circular cylinder to investigate the effect of plate length on the stability of this type of VIV (vortex-induced vibration) suppressor. Measurements of the dynamic response and trajectories are presented for models with low mass and damping which are free to respond in the cross-flow and streamwise directions. It is shown that, depending on a combination of geometric and strucutral parameters, parallel plates might not be able to completely suppress VIV for the whole range of reduced velocities investigated. Plates with length between 1.0 and 2.0 diameters showed instabilities and induced high-amplitude vibrations for some specific reduced velocities. Rotational friction was increased for a second run and all plates stabilised and suppressed VIV for the whole range of reduced velocities tested. An undesirable steady lateral force was also observed to occur for all configurations. Experiments with a plain cylinder in the Reynolds number range from 1,000 to 20,000 have been performed to serve as reference.
Skip Nav Destination
ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
July 1–6, 2012
Rio de Janeiro, Brazil
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4492-2
PROCEEDINGS PAPER
The Effect of Plate Length on the Behaviour of Free-to-Rotate VIV Suppressors With Parallel Plates
Gustavo R. S. Assi,
Gustavo R. S. Assi
University of São Paulo, São Paulo, SP, Brazil
Search for other works by this author on:
Julia R. H. Rodrigues,
Julia R. H. Rodrigues
University of São Paulo, São Paulo, SP, Brazil
Search for other works by this author on:
Cesar M. Freire
Cesar M. Freire
University of São Paulo, São Paulo, SP, Brazil
Search for other works by this author on:
Gustavo R. S. Assi
University of São Paulo, São Paulo, SP, Brazil
Julia R. H. Rodrigues
University of São Paulo, São Paulo, SP, Brazil
Cesar M. Freire
University of São Paulo, São Paulo, SP, Brazil
Paper No:
OMAE2012-83625, pp. 791-798; 8 pages
Published Online:
August 23, 2013
Citation
Assi, GRS, Rodrigues, JRH, & Freire, CM. "The Effect of Plate Length on the Behaviour of Free-to-Rotate VIV Suppressors With Parallel Plates." Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Ocean Engineering; CFD and VIV. Rio de Janeiro, Brazil. July 1–6, 2012. pp. 791-798. ASME. https://doi.org/10.1115/OMAE2012-83625
Download citation file:
7
Views
0
Citations
Related Proceedings Papers
Related Articles
Investigation on the Stability of Parallel and Oblique Plates as Suppressors of Vortex-Induced Vibration of a Circular Cylinder
J. Offshore Mech. Arct. Eng (August,2014)
A New Type of Muffler Based on Microperforated Tubes
J. Vib. Acoust (June,2011)
Modeling perforates in mufflers using two-ports
J. Vib. Acoust (December,2010)
Related Chapters
Analysis and Cauculation of Preparative Plane Transient Voltage Suppressor Diode
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Glioma Biology
Nanoparticles and Brain Tumor Treatment
Pulsation and Vibration Analysis of Compression and Pumping Systems
Pipeline Pumping and Compression System: A Practical Approach, Third Edition