Stability of the laminar boundary layer flow encountering a row of roughness elements: Biglobal stability approach and DNS
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Cited by (31)
Nonlinear Mode Interactions in the Wake of a Medium Height Roughness Element
2015, Procedia IUTAMInstability of isolated boundary-layer streaks to spatially-developing travelling waves
2019, European Journal of Mechanics, B/FluidsCitation Excerpt :However in all cases, as the height of the surface roughness (or strength of the surface injection) is increased, the streak that is induced downstream of the disturbance region ultimately becomes unstable, leading to transition. The problem of determining the stability of streaks has been tackled via a range of approaches, for example, experimentally [7], numerically via global stability analyses and DNS [1,13], as well as local parallel theories [14], global optimal perturbations [15] and in compressible flow through bi-global eigenvalue computations and three-dimensional PSE analyses [6]. In some cases the analysis points to sinuous modes dominating the response, whilst in others varicose modes are suggested to be the most relevant.
Effects of streamwise-elongated and spanwise-periodic surface roughness elements on boundary-layer instability
2020, Journal of Fluid MechanicsStability analysis of boundary layers controlled by miniature vortex generators
2015, Journal of Fluid MechanicsBoundary layer stabilization using free-stream vortices
2014, Journal of Fluid MechanicsOn the disturbance evolution downstream of a cylindrical roughness element
2014, Journal of Fluid Mechanics
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