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Unified Friction Formulation from Laminar to Fully Rough Turbulent Flow [PDF]

open access: yesApplied Sciences, 2018
This paper provides a new unified formula for Newtonian fluids valid for all pipe flow regimes from laminar to fully rough turbulent flow. This includes laminar flow; the unstable sharp jump from laminar to turbulent flow; and all types of turbulent ...
Dejan Brkić, Pavel Praks
doaj   +6 more sources

Turbulent flow interacting with flexible trawl net structure including simulation catch in flume tank [PDF]

open access: yesScientific Reports, 2023
The interaction between fluid and the midwater trawl with stocked catches is extremely complex, but essential to improve the understanding of the drag force acting on the trawl, the behavior of the fishing structure during a trawling process, and to ...
Bruno Thierry Nyatchouba Nsangue   +4 more
doaj   +2 more sources

Turbulent flow-based habitat complexity metrics around instream boulders in support of river restoration [PDF]

open access: yesScientific Reports
Instream boulder placement has been commonly used to restore degraded streams by enhancing instream complexity and ecological value. Boulder-induced variations in turbulent flow characteristics affect the quality and availability of aquatic habitats in ...
Naima Reggad   +4 more
doaj   +2 more sources

Numerical analysis of turbulent flow characteristics with the influence of speed ratio in a double-sided cavity [PDF]

open access: yesMethodsX
The present study numerically investigates the two-dimensional steady incompressible turbulent flow characteristics in an enclosed cavity. The finite volume method (FVM) is used to discretize the governing equations, and k-ε turbulence models are adopted
Manogaran Gnanasekaran   +1 more
doaj   +2 more sources

Experimental research of incipient turbulent flow frequency spectra in hydrodynamic unsteadiness [PDF]

open access: yesINCAS Bulletin, 2021
Hydraulic and heat transfer processes play a very important role in the design and prototyping of aerospace technology. Unsteady conditions are the peculiarity of mostly aerospace systems.
Viacheslav KRAEV
doaj   +1 more source

Experimental research of turbulent flow frequency spectra [PDF]

open access: yesINCAS Bulletin, 2020
Hydraulic and heat transfer processes play a very important role in the design and prototyping of aerospace technology. In most cases this technique works under non-isothermal conditions.
Viacheslav KRAEV
doaj   +1 more source

Intra-aneurysmal thrombosis and turbulent flow on MRI of large and giant internal carotid artery aneurysms

open access: yesNeuroscience Informatics, 2021
Objective: Large and giant intracranial aneurysms are vascular pathologies associated with high morbidity and mortality. The purpose of this study was to assess large and giant internal carotid artery (ICA) aneurysms and their intra-aneurysm thrombosis ...
Huachen Zhang, Shikai Liang, Xianli Lv
doaj   +1 more source

A General Approach for Flow Optimization and Drag Reduction in Turbulent Pipe Flows [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Flow optimization and drag reduction are of great importance in industrial applications. However, most of the structural optimization and drag reduction in pipe flows are based on industrial experience or a large number of experiments, and there is a ...
J. Guo, K. Luo, Z. He, S. Wu, J. Fan
doaj   +1 more source

Vane Angle Influence on the Flow Pattern around a Circular Pier

open access: yesU.Porto Journal of Engineering, 2022
This paper intends to numerically analyze the hydrodynamic characteristics of the flow pattern that surrounds the circular pier near the vane angle. These include flow velocity, turbulent intensity, and pressure. A computational fluid dynamic is proposed
tahseen jabbar   +2 more
doaj   +1 more source

Experimental research on flow regime and transitional criterion of slug to churn-turbulent and churn-turbulent to annular flow in rectangular channels

open access: yesNuclear Engineering and Technology, 2023
As for two-phase flow in rectangular channels, the flow regimes especially like churn-turbulent and annular flow are significant for the physical problem like Countercurrent Flow Limitation (CCFL).
Qingche He   +4 more
doaj   +1 more source

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