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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, it was shown that for a broad class of problems in shell theory the fluid viscosity can be taken into account by separating the system of viscous fluid equations into two subsystems, one of which is integrated in quadratures, while the other agrees with the Helmholtz equation.
1 citations
01 Jan 2010
TL;DR: In this article, the macroscopic equations for laminar power-law fluid flow were obtained for a porous medium starting from traditional equations (Navier-Stokes), and the volume averaging was applied in traditional transport equations with the power law fluid model.
Abstract: In this paper, the macroscopic equations for laminar power-law fluid flow is obtained for a porous medium starting from traditional equations (Navier-Stokes). Then, the volume averaging is applied in traditional transport equations with the power-law fluid model. This procedure leads to macroscopic transport equations set for non- Newtonian fluid.
1 citations
TL;DR: In this article, the effect of stenosis on flow rate, resistance to flow and wall shear stress for different parameters was discussed and a two-layered mathematical model was incorporated by considering the peripheral layer as Newtonian fluid and the core layer as Bingham-plastic type non-Newtonian fluid.
Abstract: The present study discusses the effect of stenosis on flow rate, resistance to flow and wall shear stress for different parameters. A two –layered mathematical model has been incorporated here by considering the peripheral layer as Newtonian fluid and the core layer as Bingham-plastic type non-Newtonian fluid. The numerical results are presented in graphical form.
1 citations
01 Apr 1975
TL;DR: In this paper, the effects of fluid elasticity on flow were brought out by comparing the results with those obtained in case of a Newtonian fluid, limited to fluids with short memories.
Abstract: Oscillatory flow of an elastico-viscous fluid (Walters fluid B′) over a flexible surface is analysed. The study is limited to fluids with short memories. The effects of fluid elasticity on flow are brought out by comparing the results with those obtained in case of a Newtonian fluid.
1 citations
01 Jan 2012
TL;DR: In this article, the authors used the measurement of the microcantilever's dynamic spectrum to extract the hydrodynamic force exerted by the surrounding fluid on the micro cantever and consequently the rheological fluid properties.
Abstract: Silicon microcantilevers can be used to measure the rheological properties of complex fluids. In the method presented in this paper, the measurement of the microcantilever’s dynamic spectrum is used to extract the hydrodynamic force exerted by the surrounding fluid on the microcantilever and consequently the rheological fluid properties. The originality of the proposed method relies in the fact that not only may the viscosity of the fluid be measured but also the fluid’s viscoelasticity, i.e., both viscous and elastic properties, which are key parameters in the case of complex fluids. In this method the use of analytical equations allows the fluid’s complex shear modulus to be extracted and expressed as a function of the frequency. Viscoelastic spectral characteristics of fluids can be determined in analogy to rheograms recorded with standard laboratory equipment, and extend the frequencies of investigation to the range 1-100 kHz.
1 citations