Journal ArticleDOI
Effects of splitter plates and Reynolds number on the aerodynamic loads acting on a circular cylinder
TLDR
In this paper, a circular cylinder with splitter plates has been used to investigate the aerodynamic differences between a bare cylinder and a semi-cylindrical roof, and it was found that a frontal splitter plate, with plate length to cylinder diameter ratio of L / D = 3, has produced a postcritical flow at relatively low Reynolds numbers by the generated disturbances in the approaching flow.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 2014-04-01. It has received 55 citations till now. The article focuses on the topics: Splitter plate & Reynolds number.read more
Citations
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Journal ArticleDOI
Flow-induced vibration of a circular cylinder with splitter plates placed upstream and downstream individually and simultaneously
TL;DR: In this article, the effects of the downstream plate length and the arrangement of plates on the hydrodynamic forces, vibration response and flow wake were examined using the direct numerical simulation (DNS).
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%.
Journal ArticleDOI
Numerical investigation of flow-induced rotary oscillation of circular cylinder with rigid splitter plate
TL;DR: In this paper, the fluid flow over a rotationally oscillating circular cylinder with splitter plate is treated as a coupled dynamic system by fully considering the structural inertia, stiffness, and damping.
Journal ArticleDOI
Unsteady forced convection over cylinder with radial fins in cross flow
TL;DR: In this paper, the effect of adding straight fins on thermal and hydraulic characteristics of transient heat and fluid flow over a circular cylinder is investigated using the OpenFOAM toolbox, and the fin effectiveness has been calculated for cylinder with different number and heights of fins in various Reynolds numbers, and it is concluded that the best number of fins with the highest effectiveness for all Reynolds numbers is equal to 4.
Posted Content
Predicting wind pressures around circular cylinders using machine learning techniques
Gang Hu,Kenny C. S Kwok +1 more
TL;DR: It is believed that the GBRT models provide very efficient and economical alternative to traditional wind tunnel tests and computational fluid dynamic simulations for determining wind pressures around smooth circular cylinders within the studied Re and Ti range.
References
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Journal ArticleDOI
Experiments on the flow past a circular cylinder at very high Reynolds number
TL;DR: For R > 3.5 × 10^6, definite vortex shedding occurs, with Strouhal number 0.27 as discussed by the authors, while for R > 0.7, the vortex shedding rate becomes constant.
DissertationDOI
On the development of turbulent wakes from vortex streets
TL;DR: In this article, the authors investigated the wake development behind circular cylinders at Reynolds numbers from 40 to 10,000 in a low-speed wind tunnel and found that in the stable range the vortex street has a periodic spanwise structure.
Journal ArticleDOI
The mechanics of the formation region of vortices behind bluff bodies
TL;DR: In this article, the authors examined the characteristic lengths of the oscillating wakes of bluff bodies and concluded that these are equivalent at high Reynolds number, leading to the conclusion that there are two simultaneous characteristic lengths; the scale of the formation region and the width to which the free shear layers diffuse.
On the drag and shedding frequency of two-dimensional bluff bodies
TL;DR: In this paper, a semi-empirical study of the bluff body problem is presented, where interference elements in the wake close behind a cylinder demonstrate the need for considering that region in any complete theory.
Book
Wind Loading of Structures
TL;DR: In this article, the authors discuss the nature of windstorms and wind-induced damage, and the prediction of design wind speeds and structural safety, as well as the effective static load distribution.
Related Papers (5)
The effects of wake splitter plates on the flow past a circular cylinder in the range 10 4 < R <5×10 4
Reduction of flow-induced forces on a circular cylinder using a detached splitter plate
Control of laminar vortex shedding behind a circular cylinder using splitter plates
Kiyoung Kwon,Haecheon Choi +1 more