Self-excited primary and secondary instability of laminar separation bubbles
The self-excited instabilities acting on laminar separation bubbles in the absence of external
forcing are studied by means of linear stability analysis and direct numerical simulation …
forcing are studied by means of linear stability analysis and direct numerical simulation …
Characteristics of geometry-and pressure-induced laminar separation bubbles at an enhanced level of free-stream turbulence
SM Aniffa, VS Caesar, V Dabaria… - Journal of Fluid …, 2023 - cambridge.org
Responses of a geometry-induced separation bubble (GISB) and a pressure-induced
separation bubble (PISB) at enhanced levels of free-stream turbulence (FST) have …
separation bubble (PISB) at enhanced levels of free-stream turbulence (FST) have …
[HTML][HTML] Numerical study of the hydrodynamic stability of a wind-turbine airfoil with a laminar separation bubble under free-stream turbulence
The interaction of several instabilities and the influence of free-stream turbulence on laminar-
turbulent transition on a 20% thick wind-turbine blade section with a laminar separation …
turbulent transition on a 20% thick wind-turbine blade section with a laminar separation …
Structure and dynamics of a laminar separation bubble near a wing root: towards reconstructing the complete LSB topology on a finite wing
CE Toppings, S Yarusevych - Journal of Fluid Mechanics, 2022 - cambridge.org
The influence of the wing root junction on the laminar separation bubble forming on the
suction surface of a semispan NACA 0018 wing cantilevered from the wind tunnel test …
suction surface of a semispan NACA 0018 wing cantilevered from the wind tunnel test …
Acoustic impedance and hydrodynamic instability of the flow through a circular aperture in a thick plate
We study the unsteady flow of a viscous fluid passing through a circular aperture in a plate
characterized by a non-zero thickness. We investigate this problem by solving the …
characterized by a non-zero thickness. We investigate this problem by solving the …
Unsteady fluidic oscillators for active controlling boundary layer separation in an ultra-high-lift low-pressure turbine
X Qu, Y Zhang, X Lu, J Zhu, Y Zhang - Aerospace Science and Technology, 2021 - Elsevier
This study used large eddy simulation (LES) to investigate the control mechanism of a fluidic
oscillator in the suppression of non-reattachment separation of a boundary layer from an …
oscillator in the suppression of non-reattachment separation of a boundary layer from an …
[HTML][HTML] Boundary layer stability on a rotating wind turbine blade section
Wall-resolved large eddy simulations of the flow on a rotating wind turbine blade section are
conducted to study the rotation effects on laminar-turbulent transition on the suction surface …
conducted to study the rotation effects on laminar-turbulent transition on the suction surface …
Absolute instability of free-falling viscoelastic liquid jets with surfactants
A Alhushaybari, J Uddin - Physics of Fluids, 2020 - pubs.aip.org
The effect of surfactants on the absolute instability of a viscoelastic liquid jet falling under
gravity is examined for axisymmetrical disturbances. In general, the inclusion of surfactants …
gravity is examined for axisymmetrical disturbances. In general, the inclusion of surfactants …
Unsteady effects of periodic wake passing frequency on aerodynamic performance of ultra-high-lift low pressure turbine cascades
X Qu, Y Zhang, X Lu, J Zhu - Physics of fluids, 2019 - pubs.aip.org
Flow losses and flow field data downstream of an ultra-high-lift aft-loaded low pressure
turbine cascade were comprehensively measured for different incoming wake passing …
turbine cascade were comprehensively measured for different incoming wake passing …
Integrated optimization of a turbine stage at a low Reynolds number via NURBS surface and machine learning
H Yuan, Y Wu, J Zhang, S Zhou, X Lu, Y Zhang - Energy, 2024 - Elsevier
As the turbine load increases, both the blade profile losses and secondary flow losses in the
endwall region cannot be ignored for turbines operating at low Reynolds numbers. To fully …
endwall region cannot be ignored for turbines operating at low Reynolds numbers. To fully …