Lubricated Transport of Highly Viscous Non-newtonian Fluid as Core-annular Flow: A CFD Study
TLDR
In this article, the authors investigate core annular flow (CAF) using computational techniques for the case in which the core fluid is non-Newtonian and the annular fluid is Newtonian.About:
This article is published in Procedia IUTAM.The article was published on 2015-01-01 and is currently open access. It has received 18 citations till now. The article focuses on the topics: Pressure drop & Herschel–Bulkley fluid.read more
Citations
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On new scaling group of transformation for Prandtl-Eyring fluid model with both heat and mass transfer
TL;DR: In this paper, a short communication is structured to offer a set of scaling group of transformation for Prandtl-Eyring fluid flow yields by stretching flat porous surface, which is carried with both heat and mass transfer characteristics.
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Modeling of core-annular and plug flows of Newtonian/non-Newtonian shear-thinning fluids in pipes and capillary tubes
TL;DR: In this article, a solution for concentric core-annular laminar flows of Newtonian/non-Newtonian shear-thinning fluids in horizontal and inclined pipes is presented.
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Flow patterns and pressure gradient correlation for oil–water core–annular flow in horizontal pipes
TL;DR: In this paper, the characteristics of oil-water core-annular flow in a horizontal acrylic pipe were investigated and a pressure loss model was modified by changing the friction coefficient formula with empirical value added.
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Study on hydrodynamic characteristics of oil-water annular flow in 90° elbow
TL;DR: In this article, the stability in the development of core annular flow (CAF) by the influence of the elbow was investigated by computational fluid dynamics (CFD), which matched well with the previous experimental data and empirical correlation, indicating the reliability and practicability of the model.
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The Rise and Fall of Banana Puree: Non-Newtonian Annular Wave Formation by Transonic Self-Pulsating Flow
Danielle Wilson,Wayne Strasser +1 more
TL;DR: In this article , the authors reveal mechanisms driving pre-filming wave formation of non-Newtonian banana puree inside a twin-fluid atomizer at a steam-puree mass ratio of 2.7%.
References
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Core-annular flows
TL;DR: In this article, the authors give an overview of the issues posed by the science and technology of transporting heavy oils in a sheath of lubricating water. They touch on measures of energy efficiency, industrial experience, fouling, stability and models of levitation.
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Friction factor and holdup studies for lubricated pipelining—I. Experiments and correlations
TL;DR: In this paper, a correlation formula which estimates the holdup fraction is introduced and evaluated for all available experimental data and a simple theory is given which is based on the concentric core-annular flow model and leads to a Reynolds number and friction factor which reduce a large body of experimental data onto one curve; with the best results in the high Reynolds number flow regime.
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Review of oil water core annular flow
TL;DR: A brief review of the past studies on oil-water core annular flows is provided in this paper, including studies on hydrodynamics as well as stability of flow, and a detailed discussion of the current state of the art can be found in Section 2.1.
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Experimental Study of the Pipeline Lubrication for Heavy Oil Transport
TL;DR: In this paper, a pipeline lubrication technique based on core-annular flow regime is used for pressure drop reduction in the transport of very viscous products, where a thin water film adjacent to the internal pipe wall lubricates the internal oil core leading to a longitudinal pressure gradient reduction.
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CFD simulation of core annular flow through sudden contraction and expansion
TL;DR: In this article, a computational fluid dynamic simulation has been performed to investigate core annular flow through sudden contraction and expansion, and the model predicts that fouling can be minimized by increasing the water intake or the pipe diameter.