Fluid flow around bluff bodies occurs in numerous fields of science and engineering, such as flows pass vehicles, cables, towers and bridges. These flows have been studied experimentally and numerically for the last several decades. The investigation of flow around high-speed trains is an important application of bluff bodies. Fluid flow, aerodynamic forces and moments, separation and wake regi...

A specific feature of three-dimensional bluff body wakes, flow bistability, is a subject of particular recent interest. This feature consists of a random flipping of the wake between two asymmetric configurations and is believed to contribute to the pressure drag of many bluff bodies. In this study we apply the modelling approach recently suggested for axisymmetric bodies by Rigas et al. (J. Fl...

Flow past a bluff body in freestream turbulence can substantially change the flow behaviour compared to that smooth inflow. This paper presents study of wake and aerodynamics an oscillating square cylinder at resonant frequency turbulence, with integral length not greater than side intensity 10%. Large eddy simulations (LES) Cartesian grid using Immersed Boundary Method (IBM) technique embedded...

In aerodynamics study, whenever there is a flat/blunt face, it will result in the maximum drag effect on flat body. these types of problems, splitter plates have found significant role reducing force. The plate separate/bifurcate flow at front face present study aims to find fluid flows over body by varying length plate. pressure and Mach number effects near surface Also, crucial for higher vel...

Abstract This paper will discuss a method of bluff body noise control that utilises the phenomenon of aerodynamic interference. This technique uses a second body (not necessarily bluff) that is placed in the wake of the bluff body whose noise we wish to control. Through proper understanding of the wake dynamics, the amplitude and phase of the noise from the downstream body can be controlled so ...

Volcanic ash is an aerial hazard to both aircraft and local populations, hence efforts monitor quantify its presence are underway in many regions, protect airspace users as a modeling tool for volcanology. One direct approach acquire in-situ samples using unmanned vehicle, but this introduces possible bias the due collector system, especially across full range of particle sizes. This work explo...

Significant developments in bridge aeroelastic analysis have been made utilizing realistic aerodynamic force modeling for bridges with bluff sections under turbulent winds. With these developments as a background, this paper highlights state-of-the-art developments in the aeroelastic analysis and identifies new frontiers in aerodynamic tailoring of long span bridges. Challenges in the aeroelast...

Elastic filamentous structures found on swimming and flying organisms are versatile in function, rendering their precise contribution to locomotion difficult to assess. We show in this Letter that a single passive filament hinged on the rear of a bluff body placed in a stream can generate a net lift force without increasing the mean drag force on the body. This is a consequence of spontaneous s...