Control of the Secondary Crossflow Instability Using Plasma Actuators
| Autor: | Markus J. Kloker, Philipp C. Dörr |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Turbulence Laminar flow Mechanics 01 natural sciences Instability 010305 fluids & plasmas Vortex Physics::Fluid Dynamics Nonlinear system symbols.namesake Mach number 0103 physical sciences symbols Actuator Plasma actuator 0105 earth and related environmental sciences |
| Zdroj: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783319272788 |
| Popis: | Direct numerical simulations are used to investigate the fundamental applicability of plasma actuators for controlling laminar breakdown in a swept-wing-type boundary-layer flow. Localized volume forcing, modelling the actuators, is used to favourably influence the three-dimensional nonlinear disturbance state with large-amplitude crossflow vortices (CFVs). One actuator per fundamental spanwise wavelength is positioned at a selected spanwise position to alter the CFVs and the associated flow field. It is found that both forcing against and in the direction of the crossflow can weaken the secondary instability and thus delay transition to turbulence. |
| Databáze: | OpenAIRE |
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