Journal ArticleDOI
Suppression of vortex-induced vibration of a circular cylinder using suction-based flow control
TLDR
In this paper, a flow control method is employed to mitigate vortex-induced vibration (VIV) of a circular cylinder by using a suction flow method, and the results indicate clearly that the steady suction-flow control method exhibits excellent control effectiveness and can distinctly suppress the VIV by dramatically reducing the amplitudes of cylinder vibrations, fluctuating pressure coefficients and lift coefficients of the circular cylinder model.About:
This article is published in Journal of Fluids and Structures.The article was published on 2013-10-01. It has received 173 citations till now. The article focuses on the topics: Potential flow around a circular cylinder & Flow velocity.read more
Citations
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Journal ArticleDOI
Vortex shedding suppression and wake control: A review
TL;DR: In this article, a survey of existing studies on different methods of controlling the wake destructive behavior and suppression of vortex shedding behind bluff bodies are discussed, including the very recent developments, and the effectiveness of each technique on the drag reduction.
Journal ArticleDOI
Passive jet control of flow around a circular cylinder
TL;DR: In this article, the authors used four perforated pipe designs with different numbers of suction/jet holes to create flow communicating channels between the windward and leeward stagnation points of a cylindrical test model.
Journal ArticleDOI
An experimental study on a suction flow control method to reduce the unsteadiness of the wind loads acting on a circular cylinder
TL;DR: In this article, an experimental investigation was conducted to assess the effectiveness of a suction flow control method for vortex-induced vibration (VIV) suppression, which uses a limited number of isolated suction holes to manipulate the vortex shedding in the wake behind a circular cylinder in order to reduce the unsteadiness of the dynamic wind loads acting on the cylinder.
Journal ArticleDOI
Flow around a circular cylinder with slit
TL;DR: In this paper, a cylindrical test model is modified with a slit parallel to the incoming airflow to create a flow communicating channel between the windward and leeward stagnation points.
Journal ArticleDOI
Predicting wind pressures around circular cylinders using machine learning techniques
Gang Hu,Kenny C. S Kwok +1 more
TL;DR: In this article, the authors used decision tree regressor, random forest, and gradient boosting regression trees (GBRT) to predict wind pressure around circular cylinders, and the GBRT models exhibited the best performance for predicting both mean and fluctuating pressures, and they were capable of making accurate predictions for Re ranging from 104 to 106 and Ti ranging from 0% to 15%.
References
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Journal ArticleDOI
VIVACE (Vortex Induced Vibration Aquatic Clean Energy): A New Concept in Generation of Clean and Renewable Energy From Fluid Flow
TL;DR: The vortex induced vibration aquatic clean energy (VIVACE) converter as discussed by the authors is based on the idea of maximizing rather than spoiling vortex shedding and exploiting rather than suppressing VIV.
Patent
Magnetorheological fluid dampers
TL;DR: In this article, a magnetic valve is utilized to change the flow parameters of the MR fluid and, hence, the operational characteristics of the damper, and several improved piston designs, including spool and toroidal configurations, are presented.
Proceedings ArticleDOI
Aerodynamic Flow Control Using Synthetic Jet Technology
TL;DR: In this article, the manipulation of global aerodynamic forces on bluff bodies using surface fluidic actuators based on synthetic jets technology is demonstrated in wind tunnel experiments using a 2-D cylinder model.
Journal ArticleDOI
Rain-wind induced vibrations of cables stayed bridges
Y. Hikami,Naruhito Shiraishi +1 more
TL;DR: In this paper, it is shown that the rain influence is originated by a rain water rivulet formation along the upper windward surface of cable, and with this rivule formation, an apparent cable cross section becomes aerodynamically unstable.
Journal ArticleDOI
Rain-wind induced vibration of cables of cable-stayed bridges
TL;DR: In this article, the exciting factors and mechanism of rain-wind induced vibration of polyethylene-lapped cable of cable-stayed bridges and the aerodynamic countermeasure to suppress the vibration are discussed.