Results 21 to 30 of about 18,315 (267)

Large-Scale Flow Structure in Turbulent Poiseuille Flows at Low-Reynolds Numbers

open access: yesJournal of Fluid Science and Technology, 2012
Direct numerical simulations of a spectral method are performed to study the turbulent channel flow at the low-Reynolds numbers, where the quasi-laminar and turbulent regions simultaneously appear and form the stripe pattern, which is floated downstream ...
Koji FUKUDOME, Oaki IIDA
doaj   +1 more source

Characterization of Turbulent Flow Behind a Transcatheter Aortic Valve in Different Implantation Positions

open access: yesFrontiers in Cardiovascular Medicine, 2022
The development of turbulence after transcatheter aortic valve (TAV) implantation may have detrimental effects on the long-term performance and durability of the valves.
Leonardo Pietrasanta   +5 more
doaj   +1 more source

The concept of turbulent «vortex backfill» - models and methods. Power engineering: research, equipment, technology

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2019
Models and methods for studying turbulence based on the concept of turbulent "vortex backfill" are presented. The essence of this concept is that the turbulent flow is considered as laminar, flowing through a "vortex backfill ", which creates internal ...
L. E. Melamed, G. A. Filippov
doaj   +1 more source

TEMPORO-SPECTRAL COHERENT STRUCTURE OF TURBULENCE AND PRESSURE USING FOURIER AND WAVELET TRANSFORMS

open access: yesASEAN Journal on Science and Technology for Development, 2017
Studying the spatial distribution in coherent fields such as turbulent and turbulent-induced force ones is important to model and evaluate turbulent-induced forces and response of structures on the turbulent flows. Turbulent field-based coherent function
Thai-Hoa Le, Dong-Anh Nguyen
doaj   +1 more source

On the non-local turbulent transport and non-gradient thermal diffusion phenomena in HVAC systems [PDF]

open access: yesFME Transactions, 2012
The turbulence structure investigation is essential for understanding the physics of flow-thermodynamic processes in Heating, Ventilation and Air conditioning (HVAC) systems.
Burazer Jela M.   +2 more
doaj  

Distribution of velocity and turbulent characteristics in coarse-sediment laden flows above erodible plane bed in open channel

open access: yesEPJ Web of Conferences, 2016
Extreme conditions as flash floods in steep mobile-bed streams induce flows which carry a huge amount of sediment. Typically, the flow with the intense transport of sediment is stratified with a layered structure above an erodible plane bed.
Zrostlík Štěpán   +4 more
doaj   +1 more source

Vibration analysis of hydropower house based on fluid-structure coupling numerical method

open access: yesWater Science and Engineering, 2010
By using the shear stress transport (SST) model to predict the effect of random flow motion in a fluid zone, and using the Newmark method to solve the oscillation equations in a solid zone, a coupling model of the powerhouse and its tube water was ...
Shu-he Wei, Liao-jun Zhang
doaj   +1 more source

Comparative analysis of drag reduction characteristics of two-type riblets based on numerical simulation

open access: yesXibei Gongye Daxue Xuebao, 2022
Turbulent drag reduction has always been a hot issue in fluid mechanics. Among various turbulent drag reduction methods, riblets has attracted wide attention due to its simple structure and convenient application.
DU Shuya, SANG Weimin, PANG Run
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Experimental Study on Time Evolution of Shock Wave and Turbulent Boundary Layer Interactions

open access: yesJournal of Applied Fluid Mechanics, 2020
In this paper, a test system based on the Nano-tracer Planar Laser Scattering (NPLS) technique for studying time evolution of unsteady flow structures was finished.
X. G. Lu   +4 more
doaj  

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