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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 article, a mathematical model of a granular medium saturated with a viscous homogeneous fluid is constructed and the steady-state one-dimensional oscillations of cylindrical granules and an incompressible fluid under the action of a plane sonic wave whose length is significantly greater than the cell dimensions are investigated.
Abstract: A mathematical model of a granular medium saturated with a viscous homogeneous fluid is constructed. The steady-state one-dimensional oscillations of cylindrical granules and an incompressible fluid under the action of a plane sonic wave whose length is significantly greater than the cell dimensions are investigated. The steady-state flow of the medium across the cell cross-section and the mean fluid velocity (Darcy’s law) are determined by means of passages to the limits with respect to the frequency and granule mass. The expressions obtained for the soil permeability coefficient under the action of a gravitational hydraulic head are compared with the representations of other authors.
1 citations
TL;DR: In this paper, a viscoelastic fluid is contained in the annular region between two infinitely long coaxial circular cylinders, and the relation between shearing stress and the history of the rate of shear in the fluid is assumed to be linear.
Abstract: A viscoelastic fluid is contained in the annular region between two infinitely long coaxial circular cylinders. The relation between shearing stress and the history of the rate of shear in the fluid is assumed to be linear. At some instant of time the inner cylinder is given an angular velocity which is subsequently held constant. The resulting angular velocity and stress fields are calculated.
1 citations
1 citations
TL;DR: In this paper , the boundary-layer flow of a Herschel-Bulkley fluid due to a moving plate was studied. But the authors assumed that the fluid was assumed to be Carbopol, which has similar properties to cement.
Abstract: In this paper, we study the boundary-layer flow of a Herschel–Bulkley fluid due to a moving plate; this problem has been experimentally investigated by others, where the fluid was assumed to be Carbopol, which has similar properties to cement. The computational fluid dynamics finite volume method from the open-source toolbox/library OpenFOAM is used on structured quad grids to solve the mass and the linear momentum conservation equations using the solver “overInterDyMFoam” customized with non-Newtonian viscosity libraries. The governing equations are solved numerically by using regularization methods in the context of the overset meshing technique. The results indicate that there is a good comparison between the experimental data and the simulations. The boundary layer thicknesses are predicted within the uncertainties of the measurements. The simulations indicate strong sensitivities to the rheological properties of the fluid.
1 citations
1 citations