Results 1 to 10 of about 290,054 (140)
Effect of Flow Velocity on Laminar Flow in Microfluidic Chips. [PDF]
Micromachines (Basel), 2023 Gel fibers prepared based on microfluidic laminar flow technology have important research value in constructing biomimetic scaffolds and tissue engineering. The key point of microfluidic laminar flow technology is to find the appropriate fluid flow rate in the micropipe. In order to explore the influence of flow rate on the laminar flow phenomenon of a
Wu C +3 more
europepmc +4 more sources
Front propagation in laminar flows [PDF]
Physical Review E, 2001 The problem of front propagation in flowing media is addressed for laminar velocity fields in two dimensions. Three representative cases are discussed: stationary cellular flow, stationary shear flow, and percolating flow. Production terms of Fisher-Kolmogorov-Petrovskii-Piskunov type and of Arrhenius type are considered under the assumption of no ...
Angelo Vulpiani +4 more
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Unified Friction Formulation from Laminar to Fully Rough Turbulent Flow [PDF]
, 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 ...
Brkić, Dejan, Praks, Pavel
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A mathematical clue to the separation phenomena on the two-dimensional Navier-Stokes equation [PDF]
, 2012 In general, before separating from a boundary, the flow moves toward reverse direction near the boundary against the laminar flow direction. Here in this paper, a clue to such reverse flow phenomena (in the mathematical sense) is observed. More precisely,
Yoneda, Tsuyoshi
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The laminar generalized Stokes layer and turbulent drag reduction [PDF]
, 2010 This paper considers plane channel flow modified by waves of spanwise velocity applied at the wall and travelling along the streamwise direction. Laminar and turbulent regimes for the streamwise flow are both studied.
Abramowitz +7 more
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Enhanced drag in pipe turbulent flow by an aqueous electrolyte: an electroviscous effect [PDF]
, 2009 Drag enhancement is reported for turbulent pipe flow of aqueous electrolyte solutions. No electroviscous effect was obtained with laminar flow. Nor was any unusual pressure drop observed for laminar or turbulent flow of non-electrolyte aqueous solutions ...
Bénard, Emmanuel +3 more
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Drag Reduction by Laminar Flow Control [PDF]
Energies, 2018 The Energy System Transition in Aviation research project of the Aeronautics Research Center Niedersachsen (NFL) searches for potentially game-changing technologies to reduce the carbon footprint of aviation by promoting and enabling new propulsion and drag reduction technologies. The greatest potential for aerodynamic drag reduction is seen in laminar
Nils Beck +5 more
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On the Stability of Laminar Flows Between Plates [PDF]
Archive for Rational Mechanics and Analysis, 2021 Consider a two-dimensional laminar flow between two plates, so that $(x_1,x_2)\in {\mathbb R} \times[-1,1]$, given by ${\mathbf v}(x_1,x_2)=(U(x_2),0)$, where $U\in C^4([-1,1])$ satisfies $U^\prime\neq0$ in $[-1,1]$. We prove that the flow is linearly stable in the large Reynolds number limit, in two different cases: $\bullet$ $\sup_{x\in[-1,1]} |U"(x)|
Yaniv Almog, Bernard Helffer
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Eos, Transactions American Geophysical Union, 1934 Laminar sheet‐flow may be defined as the flow of a thin sheet of viscous fluid under conditions such that turbulence does not occur.Direct surface‐runoff from the ground takes place initially as the flow of a thin film or sheet of water. Because some of the water is continually being absorbed by the soil and because of the roughness of the ground, the ...
Robert E. Horton +2 more
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Rheology of sediment transported by a laminar flow [PDF]
Physical Review E, 2016 Understanding the dynamics of fluid-driven sediment transport remains challenging, as it is an intermediate region between a granular material and a fluid flow. Boyer \textit{et al.}\citep{Boyer2011} proposed a local rheology unifying dense dry-granular and viscous-suspension flows, but it has been validated only for neutrally-buoyant particles in a ...
Douglas J. Jerolmack +4 more
openaire +5 more sources