Passive control of a swept-wing boundary layer using ring-type plasma actuators
(English)In: Journal of Fluid Mechanics, ISSN 0022-1120, E-ISSN 1469-7645Article in journal (Refereed) Submitted
Application of the ring-type plasma actuators for passive control of laminar- turbulent transition in a swept-wing boundary layer is investigated thorough direct numerical simulations. These actuators induce a wall-normal jet in the boundary layer and can act as virtual roughness elements. The flow configuration resembles experiments of Kim et al. (2016). The actuators are modelled by the volume forces computed from the experimentally measured induced velocity filed at the quiescent air condition. The natural surface roughness and unsteady perturbations are also included in the simulations. The interaction of generated vortices by the actuators with these perturbations is investigated in details. It is found that for a successful transition control the power of the actuator should be increased to generate a jet velocity one order of magnitude higher than that in the considered experiments.
Place, publisher, year, edition, pages
Cambridge University Press.
boundary layer control, boundary layer receptivity, ring-type plasma actuators, crossflow vortices
Mechanical Engineering Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-196876OAI: oai:DiVA.org:kth-196876DiVA: diva2:1049481
QC 201611252016-11-242016-11-242016-11-25Bibliographically approved