Control of cylinder wake flow and noise through a downstream porous treatment

experimental investigation of the flow control of wake cylinder by a plate with different geometrical ends

an experimental study was carried out on the wake of a cylinder on the back of which a plate is installed parallel to the fluid flow, with different terminal angles, where the reynolds number is 50000. at the end of the plate, blades with the height of 0.25 equal to the cylinder diameter and with 45, 90 and 135 degrees angle from the horizon, are installed where the cylinder diameter is equal t...

Plasma Actuators for Cylinder Flow Control and Noise Reduction

In this paper, the results of flow-control experiments using single dielectric barrier discharge plasma actuators to controlflow separation andunsteady vortex shedding froma circular cylinder in crossfloware reported. Thiswork is motivated by the need to reduce landing gear noise for commercial transport aircraft via an effective streamlining created by the actuators. The experiments are perfor...

Flow control of fluids through porous media

This paper discusses flow control of fluids through porous media, specifically related to its application in petroleum science. The flow of fluids is described by the Boussinesq equation with mixed boundary conditions; a Neumann boundary condition describes no flow at the outer boundary of the porous media and a nonlinear boundary condition describes the interaction between the porous media and...

A Methodology Based on Experimental Investigation of a DBD-Plasma Actuated Cylinder Wake for Flow Control

Feedback Control of a Cylinder Wake Low-Dimensional Model

Nomenclature Ak = time-dependent coefŽ cient of the kth proper orthogonal decompositionmode Aest k = estimation of Ak B = matrix containing the bk coefŽ cients bk = coefŽ cients associatedwith the control input ck i j = coefŽ cients of the nonlinear function gk fa = control input resulting form external forcing of the cylinder gk = nonlinear function of the time-dependent low-dimensionalmodes J...