Electromagnetic Boundary Layer Flow Control Facility Development Using Conductive Particle Seeding

Abstract

A facility for electromagnetic boundary layer flow control employing conductive particle seeding is in the initial stages of development, fabrication and testing. The facility consists of three integrated components: a conductive particle seeding mechanism, an ionization plate and a Lorentz force generator plate that comprises of a series of flushmounted surface electrodes and embedded rare earth magnets. Initial bench-top testing is reported with the future intention of testing the facility in the low speed and supersonic flow regimes. An aqueous salt solution reduced the voltage required to create a corona discharge by the ionization plate. The ionization of seeded air by an electric field presents several problems, notably an increased tendency for arcing as the conductivity within the boundary layer increases. The aqueous salt solution was accelerated or decelerated by the Lorentz force generator depending on the electromagnetic configuration. The benchtests demonstrated the ability of raising the conductivity of air to enable Lorentz force actuation under normal atmospheric conditions.

Numerical Calculations and Analyses in Diagonal Type Magnetohydrodynamic Generator

“…where h, c and θ are the channel height, the electrode width and the angle of inclination to the y axis of the lines joining the equipotential electrodes, respectively, and the author assume that an imaginary current defined by In connection, the other parts of numerical calculation processes are explained in [12].…”

Transport and deposition of neutral particles in magnetohydrodynamic turbulent channel flows at low magnetic Reynolds numbers

“…For example, charged impurities are introduced in fusion plasmas due to the erosion of walls (Smirnov et al, 2007;Krasheninnikov et al, 2010). Recent drag reducing and flow control techniques rely on the release of particles into the flow in order to enhance the electric conductivity of the carrier gas and achieve a better performance by a magnetic field (Braun et al, 2008). Moreover, nonmetallic inclusions are often present in liquid-metals affecting the quality of the final product (Takahashi and Tanigushi, 2003).…”