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Publication
Implementation of the classical plasma–fluid model for simulation of dielectric barrier discharge (DBD) actuators in OpenFOAM
Advisor(s)
Abstract(s)
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 species and accounts for finite rate chemistry. In order to achieve maximum reliability and best
performance, we have utilized state-of-the-art numerical and theoretical approaches for the simulation
of DBD plasma actuators. In this respect, to obtain a stable and accurate solution method, we tested
and compared different existing numerical procedures, including operator-splitting algorithm, super-timestepping, and solution of the Poisson and transport equations in a semi-implicit manner. The implementation of the model is conducted in OpenFOAM. Four numerical test cases are considered in order to
validate the solvers and to investigate the drawbacks/benefits of the solution approaches. The test problems include single DBD actuator driven by positive, negative and sinusoidal voltage waveforms, similar to the ones that could be found in literature. The accuracy of the results strongly depends to the
choice of time step, grid size and discretization scheme. The results indicate that the super-time-stepping
treatment improves the computational efficiency in comparison to explicit schemes. However, the semiimplicit treatment of the Poisson and transport equations showed better performance compared to the
other tested approaches.
Description
Keywords
DBD plasma actuator Plasma–Fluid model Super-time-stepping Electric discharge OpenFOAM