4 documents found, page 1 of 1
Comparison of DBD plasma actuators flow control authority in different modes of...
Abdollahzadehsangroudi, Mohammadmahdi; Páscoa, J.C.; Oliveira, P.J.The principal mechanisms by which DBD plasma actuators influence flow characteristics, and are thus able to control that flow, depend strongly on their modes of actuation. Here two different modes based on steady and unsteady actuation are compared and investigated. A simple sinusoidal voltage distribution and a duty cycled sinusoidal voltage were considered for these purposes. Leading edge separation around a ...
Reduced-stress method for efficient computation of time-dependent viscoelastic ...
Oliveira, P.J.Most calculation procedures for time-dependent viscoelastic flows require iteration within the time step used to advance the solution, in order to satisfy simultaneously the momentum and the constitutive equations for each stress component. We have devised a way of reformulating the constitutive equation for the FENE-P model, or models described by similar equations expressed in terms of the stress tensor, whic...
Implementation of the classical plasma–fluid model for simulation of dielectric...
Abdollahzadehsangroudi, Mohammadmahdi; Páscoa, J.C.; Oliveira, P.J.To simulate the coupled plasma and fluid flow physics of dielectric-barrier discharge, a plasma–fluid model is utilized in conjunction with a compressible flow solver. The flow solver is responsible for determining the bulk flow kinetics of dominant neutral background species including mole fractions, gas temperature, pressure and velocity. The plasma solver determines the kinetics and energetics of the plasma ...
The Finite Volume Method in Computational Rheology
Afonso, AM; Mónica S. N. Oliveira; Oliveira, P.J.; Alves, MA; F. T. Pinho