<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A combination of the vortex method and the boundary element method is used here to predict the two-dimensional flow field around a circular cylinder. Cylindrical structures experience strong hydrodynamic loading, due to vortex detachment from the both sides of cylinder during the flow. Thus, the practical meaning of such calculation is significant particularly in offshore oil and gas engineering as well as in the bridge and hydraulic structure engineering. This paper presents the mathematical formulation of the vortex method for the velocity and vorticity field calculation. The calculated velocity and vorticity fields are then used to predict the pressure distribution on the cylinder surface by the boundary element method. The resulting pressure on the cylinder, the Strouhal number and the length of the base recirculation zone are compared with solutions of other numerical methods and experiments, and a good agreement is achieved.</p></abstract>

A combination of the vortex method and the boundary element method is used here to predict the two-dimensional flow field around a circular cylinder. Cylindrical structures experience strong hydrodynamic loading, due to vortex detachment from the both sides of cylinder during the flow. Thus, the practical meaning of such calculation is significant particularly in offshore oil and gas engineering as well as in the bridge and hydraulic structure engineering. This paper presents the mathematical formulation of the vortex method for the velocity and vorticity field calculation. The calculated velocity and vorticity fields are then used to predict the pressure distribution on the cylinder surface by the boundary element method. The resulting pressure on the cylinder, the Strouhal number and the length of the base recirculation zone are compared with solutions of other numerical methods and experiments, and a good agreement is achieved.

Random Vortex Method in Numerical Analysis of 2D Flow Around Circular Cylinder

Wrocław University of Technology, Wrocaw, Poland

Studia Geotechnica et Mechanica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Random Vortex Method in Numerical Analysis of 2D Flow Around Circular Cylinder"}

A combination of the vortex method and the boundary element method is used here to predict the two-dimensional flow field around a circular cylinder....

Random Vortex Method in Numerical Analysis of 2D Flow Around Circular Cylinder

Published Online: Feb 28, 2015

Page range: 57 - 63

DOI: https://doi.org/10.2478/sgem-2014-0036

Keywords
vorticity, vortex method, flow instability, circular cylinder, boundary element method

© 2014 Stanisław Kostecki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Random Vortex Method in Numerical Analysis of 2D Flow Around Circular Cylinder

Published Online: Feb 28, 2015

Page range: 57 - 63

DOI: https://doi.org/10.2478/sgem-2014-0036

Keywordsvorticity, vortex method, flow instability, circular cylinder, boundary element method

© 2014 Stanisław Kostecki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
vorticity, vortex method, flow instability, circular cylinder, boundary element method