Interactions Between Flow Fields Induced by Surface Dielectric Barrier Discharge Arrays

TY - JOUR

T1 - Interactions Between Flow Fields Induced by Surface Dielectric Barrier Discharge Arrays

AU - Böddecker, Alexander

AU - Passmann, Maximilian

AU - Wilczek, Sebastian

AU - Schücke, Lars

AU - Korolov, Ihor

AU - Skoda, Romuald

AU - Mussenbrock, Thomas

AU - Gibson, Andrew R.

AU - Awakowicz, Peter

N1 - Publisher Copyright: © 2023, The Author(s).

PY - 2023/10/11

Y1 - 2023/10/11

N2 - This study investigates the flow field induced by a surface dielectric barrier discharge (SDBD) system, known for its efficient pollution remediation of volatile organic compounds (VOCs). We aim to understand the flow dynamics that contribute to the high conversion observed in similar systems using this specific SDBD design. Examining how the surface discharge affects the gas mixing in chemical processes is important for both understanding the fundamentals and for potential industrial applications. Experimental techniques, including schlieren imaging and particle image velocimetry (PIV), applied with high temporal resolution, were used to analyse the flow field. Complementary, fluid simulations are employed to investigate the coupling between streamer and gas dynamics. Results show distinct fluid field behaviours for different electrode configurations, which differ in geometric complexity. The fluid field analysis of the most basic electrode design revealed behaviours commonly observed in actuator studies. The simulation results indicate the local information about the electron density as well as different temporal phases of the fluid flow velocity field containing the development of the experimental found vortex structure, its direction and speed of rotation. The electrode design with mostly parallel grid line structures exhibits confined vortices near the surface. In contrast, an electrode design also used in previous studies, is shown to promote strong gas transport through extended vortex structures, enhancing gas mixing and potentially explaining the high conversion observed.

AB - This study investigates the flow field induced by a surface dielectric barrier discharge (SDBD) system, known for its efficient pollution remediation of volatile organic compounds (VOCs). We aim to understand the flow dynamics that contribute to the high conversion observed in similar systems using this specific SDBD design. Examining how the surface discharge affects the gas mixing in chemical processes is important for both understanding the fundamentals and for potential industrial applications. Experimental techniques, including schlieren imaging and particle image velocimetry (PIV), applied with high temporal resolution, were used to analyse the flow field. Complementary, fluid simulations are employed to investigate the coupling between streamer and gas dynamics. Results show distinct fluid field behaviours for different electrode configurations, which differ in geometric complexity. The fluid field analysis of the most basic electrode design revealed behaviours commonly observed in actuator studies. The simulation results indicate the local information about the electron density as well as different temporal phases of the fluid flow velocity field containing the development of the experimental found vortex structure, its direction and speed of rotation. The electrode design with mostly parallel grid line structures exhibits confined vortices near the surface. In contrast, an electrode design also used in previous studies, is shown to promote strong gas transport through extended vortex structures, enhancing gas mixing and potentially explaining the high conversion observed.

KW - Particle image velocimetry

KW - Schlieren imaging

KW - Streamer simulation

KW - Surface dielectric barrier discharge

U2 - 10.1007/s11090-023-10406-y

DO - 10.1007/s11090-023-10406-y

M3 - Article

AN - SCOPUS:85173905069

SN - 0272-4324

VL - 43

SP - 1509

EP - 1530

JO - Plasma chemistry and plasma processing

JF - Plasma chemistry and plasma processing

IS - 6

ER -