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Herschel–Bulkley fluid
About: Herschel–Bulkley fluid is a research topic. Over the lifetime, 1946 publications have been published within this topic receiving 49318 citations.
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TL;DR: In this paper, the yield stress of a water-based magnetic fluid was investigated using flow curves obtained from tests with and without the effect of the interaction between the magnetic field and flow vorticity.
3 citations
TL;DR: In this article, a model of the near-wall turbulent fluid flow with stress relaxation and aftereffects is proposed, and it is shown that a large reduction in the friction drag and heat transfer occurs.
Abstract: A model description of the near-wall turbulent fluid flow with stress relaxation and aftereffect is proposed. It is shown that a large reduction in the friction drag and heat transfer occurs.
3 citations
TL;DR: In this article, a new approach for predicting surge and swab pressures in open-ended pipes running in steady-state is proposed, based on the modified Bernoulli equation applied to Bingham fluid flows.
3 citations
TL;DR: In this article , the influence of the surface roughness on the velocity profile and the Darcy friction factor of a viscous non-Newtonian fluid is investigated, and it is shown that shear thinning fluids are the most sensitive to the roughness compared with Newtonian and shear thickening fluids.
Abstract: The fully developed laminar flow of a viscous non-Newtonian fluid in a rough-walled pipe is considered. The fluid rheology is described by the power–law model (covering shear thinning, Newtonian, and shear thickening fluids). The rough surface of the pipe is considered to be fractal, and the surface roughness is measured using surface fractal dimensions. The main focus of this study lies in the theoretical investigation of the influence of the pipe surface roughness on the velocity profile and the Darcy friction factor of an incompressible non-Newtonian fluid. The plotted results demonstrate that shear thinning fluids are the most sensitive to the surface roughness compared with Newtonian and shear thickening fluids. For a particular value of the surface fractal dimension, there exists an intersection point where shear thinning, Newtonian, and shear thickening fluids behave the same way regarding the amplitude of the velocity profile and the friction factor. This approach has a variety of potential applications, for instance fluid dynamics in hydrology, blood flow in the cardiovascular system, and many industrial applications.
3 citations
TL;DR: In this paper , a truncated fractional-derivative constitutive model is proposed to consider the non-locality of non-Newtonian fluids, and the results show an agreement within 2%.
3 citations