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Bidimensional numerical simulations of the flow around arrays of four fixed cylinders
Daniela Miwa Uemura Kawaguti, Alessandro Alberto de Lima, Guilherme Rosa Franzini, Giovanni Aiosa do Amaral

Last modified: 2018-04-21

Abstract


The flow around an array of cylinders is a classical and quite complex problem on fluid mechanics. The flow around a single cylinder is a well-known phenomenon, however, in the presence of other bluff bodies, interference effects may appear. Among the technological applications, we highlight the flow around the columns of a floating offshore wind turbine (FOWT).  In these structures, the columns may vary in many ways such as number, length, diameter, type and spacial distribution.

This paper aims to contribute in the theme, being an early approach for the complex flow around a fixed FOWT. Bidimensional numerical simulations of the flow around arrays of four cylinders will be carried out for different configurations of the cylinders. Focus will be put not only on the influence of the distance between the cylinders that represent the columns but also on its special distribution. The analysis methodology will include both the characterization of the flow around the cylinders and the analysis of forces time-histories in each cylinder.

Keywords


computational fluid dynamics; bidimensional numerical simulation; flow around an array of cylinders

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