Dynamiques transitoires de sillage dans le pinball fluidique

TL;DR

This paper investigates the transient flow dynamics around three fixed cylinders arranged in a triangle, revealing how elementary flow features influence lift and drag as the system approaches chaos.

Contribution

It introduces a detailed analysis of transient flow behaviors in a fluidic pinball system, linking elementary degrees of freedom to aerodynamic coefficients.

Findings

Transient dynamics reveal the contribution of elementary flow modes.

Flow behavior changes significantly as Reynolds number increases.

Insights into flow-induced forces near chaotic transition.

Abstract

In this work, we are interested in the transient dynamics of a fluid configuration consisting of three fixed cylinders whose axes distribute over an equilateral triangle in transverse flow << fluidic pinball >>. As the Reynolds number is increased on the route to chaos, its transient dynamics tell us about the contribution of the elementary degrees of freedom of the system to the lift and drag coefficients.