Results 31 to 40 of about 3,814,145 (201)

A finite-element algorithm for Stokes flow through oil and gas production tubing of uniform diameter

open access: yesOil & Gas Science and Technology, 2020
Stokes flow of a Newtonian fluid through oil and gas production tubing of uniform diameter is studied. Using a direct simulation on computer-aided design of discretised conduits, velocity profiles with gravitational effect and pressure fields are ...
Akanji Lateef T., Chidamoio Joao
doaj   +1 more source

Modeling a 3-D multiscale blood-flow and heat-transfer framework for realistic vascular systems

open access: yesScientific Reports, 2022
Modeling of biological domains and simulation of biophysical processes occurring in them can help inform medical procedures. However, when considering complex domains such as large regions of the human body, the complexities of blood vessel branching and
Rohan Amare   +4 more
doaj   +1 more source

Energy growth in Hagen–Poiseuille flow of Herschel–Bulkley fluid [PDF]

open access: yesJournal of Non-Newtonian Fluid Mechanics, 2017
Abstract Linear stability of Poiseuille flow of Herschel–Bulkley fluid in a cylindrical pipe is studied using modal and non-modal approaches. The first part of the present study thus deals with the classical normal mode approach in which the resulting eigenvalue problem is solved using a Chebyshev collocation method.
Hocine Bentrad   +4 more
openaire   +1 more source

A New Slip Length Model for Enhanced Water Flow Coupling Molecular Interaction, Pore Dimension, Wall Roughness, and Temperature

open access: yesAdvances in Polymer Technology, 2019
In this paper, a slip length model is proposed to analyze the enhanced flow based on the Hagen–Poiseuille equation. The model considers the multimechanisms including wall-water molecular interactions, pore dimensions, fractal roughness, and temperature ...
Lei Li   +4 more
doaj   +1 more source

Liquid viscosity determination by Coriolis flow meter [PDF]

open access: yesJournal on Processing and Energy in Agriculture, 2010
In this paper continuous measuring of water viscosity by Coriolis flow meter is analyzed. The idea of technical solution for determining fluid viscosity by Coriolis flow meter and Hagen-Poiseuille equation was elaborated.
Bikić Siniša   +5 more
doaj  

Reexamination of Hagen-Poiseuille flow: Shape dependence of the hydraulic resistance in microchannels [PDF]

open access: yesPhysical Review E, 2005
We consider pressure-driven, steady state Poiseuille flow in straight channels with various cross-sectional shapes: elliptic, rectangular, triangular, and harmonic-perturbed circles. A given shape is characterized by its perimeter P and area A which are combined into the dimensionless compactness number C = P^2/A, while the hydraulic resistance is ...
Mortensen, Asger   +2 more
openaire   +4 more sources

Linear stability of Hagen–Poiseuille flow in a chemically reacting fluid

open access: yesComputers & Mathematics with Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
SACCOMANDI, Giuseppe   +2 more
openaire   +3 more sources

Validity of a novel optical coherence tomography angiography flow index in a cohort of primary open angle glaucoma

open access: yesBMC Ophthalmology, 2023
Background Vascular mechanisms are implicated in many ocular diseases. Therefore, different vascular imaging modalities are used in management of such conditions. Optical coherence tomography angiography (OCTA) has high spatial resolution and segmentable
Ahmed Ameen Ismail   +3 more
doaj   +1 more source

Experiments on Nonlocal Fluid‐Flow Metamaterials

open access: yesAdvanced Science, EarlyView.
A nonlocal fluid‐flow metamaterial composed of standard microfluidic tubes and connectors is designed. Hence, the current of the system at one position depends on the gradient of fluid flow at many other positions, leading to unusual alternating backward and forward laminar flows of water.
Ke Wang, Yi Chen, Martin Wegener
wiley   +1 more source

Simplified models of the symmetric single-pass parallel-plate counterflow heat exchanger: a tutorial [PDF]

open access: yesRoyal Society Open Science, 2018
The heat exchanger is important in practical thermal processes, especially those of (i) the molten-salt storage schemes, (ii) compressed air energy storage schemes and (iii) other load-shifting thermal storage presumed to undergird a Smart Grid.
William F. Pickard   +1 more
doaj   +1 more source

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