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Type of Document Dissertation Author Orlov, Dmitriy Mikhailovich Author's Email Address dorlov@nd.edu URN etd-10062006-144203 Title Modelling and Simulation of Single Dielectric Barrier Discharge Plasma Actuators Degree Doctor of Philosophy Department Aerospace and Mechanical Engineering Advisory Committee
Advisor Name Title C. Lon Enloe Committee Member Eric J. Jumper Committee Member Flint O. Thomas Committee Member Thomas C. Corke Committee Member Keywords
- flow control
- computational flow dynamics
- cfd
- modelling
- single dielectric barrier discharge
- SDBD
- plasma actuators
- NACA 0021
- leading edge separation
Date of Defense 2006-10-04 Availability unrestricted Abstract This work presents the study of the single-dielectric barrier discharge aerodynamicplasma actuator. The physics of the plasma discharge was studied through
the time-resolved light intensity measurements of the plasma illumination. Plasma
characteristics were obtained and analyzed for a range of applied voltage amplitudes
and a.c. frequencies.
Based on this data, electro-static and lumped-element circuit models were
developed. The time-dependent charge distribution was used to provide boundary
conditions to the electric eld equation that was used to calculate the actuator
body force vector. Numerical
ow simulations were performed to study the e ect
of the plasma body force on the neutral
uid. The results agreed well with the
experiments.
An application of the plasma actuators to the leading-edge separation control
on the NACA 0021 airfoil was studied numerically. The results were obtained
for a range of angles of attack for uncontrolled
ow, steady and unsteady plasma
actuation. The aerodynamic stall of the airfoil was studied. Improvement in
the airfoil characteristics was observed in numerical simulations at high angles of
attack in cases with plasma actuation. The computational results corresponded
very well with experimental observations.
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