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dc.contributor.advisorSedwick, Raymonden_US
dc.contributor.authorMasati, Arberen_US
dc.date.accessioned2017-06-22T06:27:58Z
dc.date.available2017-06-22T06:27:58Z
dc.date.issued2017en_US
dc.identifierhttps://doi.org/10.13016/M2PZ8J
dc.identifier.urihttp://hdl.handle.net/1903/19502
dc.description.abstractPlasma actuators gained popularity during the change of the millennium for their ability to induce airflow and reattach stalled flow. Since then, investigations have been conducted to characterize their performance and extend their applications. Plasma actuators can be used to increase lift, decrease drag, and increase the efficiency of wind turbines. Phase locked ensemble averaging particle image velocimetry (PIV) is used to determine the induced velocity field and characterize actuator behavior and performance. However, very few studies account for particle charging from dusty plasma theory. Particle charging theories for high pressure plasmas predict a mostly linear trend between charge and particle size, with smaller particles charging less. In this work, PIV experiments were conducted with monodisperse nanoparticles for sizes ranging between 300 nm and 1250 nm. Results showed that smaller particles follow the flow more closely. PIV uncertainty quantification was performed for ensemble averaging processing. A weighted linear fit was applied to each vector and extrapolated to the 0 nm particle speed, which is taken as the true air speed. Stokes drag force fields were calculated using the known velocity difference, and using a force balance calculation the electrostatic force acting on the particles was calculated. The electrostatic force near the actuator electrode was always acting upstream, implying that particles can attain either negative or positive charge, depending on the phase.en_US
dc.language.isoenen_US
dc.titlePARTICLE CHARGING EFFECTS ON PIV MEASUREMENTS OF PLASMA ACTUATORSen_US
dc.typeDissertationen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentAerospace Engineeringen_US
dc.subject.pqcontrolledAerospace engineeringen_US
dc.subject.pqcontrolledPlasma physicsen_US
dc.subject.pquncontrolledDusty Plasmaen_US
dc.subject.pquncontrolledParticle Chargeen_US
dc.subject.pquncontrolledPIVen_US
dc.subject.pquncontrolledPlasma Actuatorsen_US


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