Direct numerical simulation of drag reduction by spanwise oscillating dielectric barrier discharge plasma force
Artikel i vetenskaplig tidskrift, 2020

DBD (dielectric barrier discharge) plasma actuators have in recent years become increasingly attractive in studies of flow control due to their light structures and easy implementation, but the design of a series of actuators enabling drag reduction depends on many parameters (e.g., the length of the actuator, the space between actuators, and voltage applied) and remains a significant issue to address. In this study, velocities created by the DBD plasma actuators in stagnant flow obtained by the numerical model are compared with experimental results. Then, a DNS study is carried on, and spanwise oscillated DBD plasma actuators are examined to obtain a drag reduction in a fully developed turbulent channel flow. This study connects the conventional spanwise oscillated force in drag reduction studies with DBD plasma actuators. While the former is one of the most successful applications for the drag reduction, the latter is a most promising tool with its light and feasible structure.

Författare

Atilla Altintas

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Lars Davidson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Peng Shia-Hui

Totalförsvarets forskningsinstitut (FOI)

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Physics of Fluids

1070-6631 (ISSN) 1089-7666 (eISSN)

Vol. 32 7

Drag Reduction in Turbulent Boundary Layer via Flow Control (DRAGY)

Europeiska kommissionen (EU), 2016-04-01 -- 2019-03-31.

Ämneskategorier

Rymd- och flygteknik

Strömningsmekanik och akustik

Fusion, plasma och rymdfysik

Styrkeområden

Energi

DOI

10.1063/5.0007103

Mer information

Senast uppdaterat

2020-09-28