Numerical study of particle distribution in wake of liquid-particle flows past a circular cylinder using discrete vortex method

2006 ◽  
Vol 27 (4) ◽  
pp. 535-542 ◽  
Author(s):  
Yuan-dong Huang ◽  
Wen-quan Wu
Keyword(s):  
Circular Cylinder ◽  
Particle Distribution ◽  
Numerical Study ◽  
Vortex Method ◽  
Liquid Particle ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Particle Flows

Flows past a rotating circular cylinder by the discrete vortex method.

1989 ◽  
Vol 9 (34) ◽  
pp. 273-276
Author(s):  
Takeyoshi Kimura ◽  
Michihisa Tsutahara ◽  
Zhong-yi Wang ◽  
Hiroshi Ishii
Keyword(s):  
Circular Cylinder ◽  
Vortex Method ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Rotating Circular Cylinder

scholarly journals Effect of structural interaction on the aerodynamic properties

2020 ◽  
Vol 17 (3) ◽  
pp. 79-86
Author(s):  
R. N. Guzeev ◽  
◽  
E. S. Goloviznina ◽  
Keyword(s):  
Cross Sections ◽  
Mutual Influence ◽  
Numerical Study ◽  
Vortex Method ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Structural Interaction ◽  
Cable Stayed Bridge ◽  
Aspect Ratios ◽  
Aerodynamic Properties

Effect of structural interaction on drag coefficient is considered. Numerical study is performed using discrete vortex method. There have been obtained dependences of the mutual influence of rectangular cross sections with different aspect ratios depending on the reduced distance between the cross sections, on their aerodynamics. The effect of structural interaction of cable-stayed bridge pylon legs is investigated on the examples of Golden Bridge and Russian Bridge in Vladivostok.

Numerical study of two-airfoil arrangements by a discrete vortex method

2020 ◽  
Vol 34 (1-2) ◽  
pp. 79-103 ◽  
Author(s):  
Thierry M. Faure ◽  
Laurent Dumas ◽  
Olivier Montagnier
Keyword(s):  
Numerical Study ◽  
Vortex Method ◽  
Discrete Vortex ◽  
Discrete Vortex Method

scholarly journals Control and Suppression of Vortex Shedding from a Slightly Rough Circular Cylinder by a Discrete Vortex Method

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4481 ◽  
Author(s):  
Marcos André de Oliveira ◽  
Paulo Guimarães de Moraes ◽  
Crystianne Lilian de Andrade ◽  
Alex Mendonça Bimbato ◽  
Luiz Antonio Alcântara Pereira
Keyword(s):  
Circular Cylinder ◽  
Strouhal Number ◽  
Vortex Shedding ◽  
Vortex Method ◽  
Control Technique ◽  
Saturation State ◽  
Discrete Vortex ◽  
Discrete Vortex Method ◽  
Moving Wall ◽  
History Of

A discrete vortex method is implemented with a hybrid control technique of vortex shedding to solve the problem of the two-dimensional flow past a slightly rough circular cylinder in the vicinity of a moving wall. In the present approach, the passive control technique is inspired on the fundamental principle of surface roughness, promoting modifications on the cylinder geometry to affect the vortex shedding formation. A relative roughness size of ε*/d* = 0.001 (ε* is the average roughness and d* is the outer cylinder diameter) is chosen for the test cases. On the other hand, the active control technique uses a wall plane, which runs at the same speed as the free stream velocity to contribute with external energy affecting the fluid flow. The gap-to-diameter varies in the range from h*/d* = 0.05 to 0.80 (h* is the gap between the moving wall and the cylinder bottom). A detailed account of the time history of pressure distributions, simultaneously investigated with the time evolution of forces, Strouhal number behavior, and boundary layer separation are reported at upper-subcritical Reynolds number flows of Re = 1.0 × 105. The saturation state of the numerical simulations is demonstrated through the analysis of the Strouhal number behavior obtained from temporal history of the aerodynamic loads. The present work provides an improvement in the prediction of Strouhal number than other studies no using roughness model. The aerodynamic characteristics of the cylinder, as well as the control of intermittence and complete interruption of von Kármán-type vortex shedding have been better clarified.

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