Results 41 to 50 of about 29,832 (302)
On the instability of shear flows and their transition to turbulence
, 1966 Over the past two decades there has been a growing interest in the field of hydrodynamic stability. To some extent this is due to the large variety of physical situations in which a discussion of stability is important to explain observed fluctuations in
C. Lin, D. Benney
semanticscholar +1 more source
Modeling the transition to turbulence in shear flows [PDF]
, 2011 One-dimensional models are presented for transitional shear flows. The models have two variables corresponding to turbulence intensity and mean shear.
D. Barkley
semanticscholar +1 more source
Influence of the inflow conditions on the dynamics of a floating wind turbine wake under harmonic surge motion [PDF]
Wind Energy ScienceFloating offshore wind turbines (FOWTs) are projected to undergo substantial expansion in the coming decades. However, the high compliance of their floating foundations, coupled with aerodynamic, hydrodynamic and mooring forces, leads to complex platform
D. A. Barile +6 more
doaj +1 more source
A visual study of turbulent shear flow
Journal of Fluid Mechanics, 1973 The outer region of a turbulent boundary layer along a flat plate was photographed and analysed; in addition, limited observations of the wall area were also made. The technique involved suspending very small solid particles in water and photographing their motion with a high-speed camera moving with the flow.The single most important event observed in
S. G. Nychas +2 more
openaire +2 more sources
Turbulence modelling for RANS CFD analyses of multi-nozzle annular jet pump swirling flows
International Journal of Heat and Fluid Flow, 2020 This study focusses on the fluid mechanic analysis and performance assessment of a one-phase swirling flow multi-nozzle annular jet pump using Reynolds-averaged Navier–Stokes simulations and experimental measurements carried out with a bespoke test rig ...
A. Morrall, S. Quayle, M. Campobasso
semanticscholar +1 more source
Topology‐Orchestrated Multi‐physical Energy Control in Turtle Shell‐Inspired Metamaterials
Advanced Materials, EarlyView.A turtle shell‐inspired lattice metamaterial efficiently manages acoustic, fluid‐thermal, and mechanical energy flows simultaneously. The unique hybrid‐coupling architecture achieves superior sound attenuation via pore‐cavity resonance, facilitates effective airflow transport, and maximizes mechanical energy absorption through multistage cell ...
Xi Wang +3 more
wiley +1 more source
Drag Reduction in Turbulent Flows by Polymer and Fiber Additives
KONA Powder and Particle Journal, 2020 This article provides a review of the recent progress in understanding and predicting additives-induced drag reduction (DR) in turbulent wall-bounded shear flows.
Cristian Marchioli, Marina Campolo
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A reinforcement‐learning approach for individual pitch control
Wind Energy, 2022 Individual pitch control has shown great capability of alleviating the oscillating loads experienced by wind turbine blades due to wind shear, atmospheric turbulence, yaw misalignment, or wake impingement.
Marion Coquelet +3 more
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Advanced Materials Technologies, EarlyView.We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger +9 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee +2 more
wiley +1 more source