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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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4 citations
TL;DR: In this article, the stagnation flow of a micropolar fluid towards a vertical permeable surface with two cases, Newtonian fluid and non-Newtonian fluid (K = 0) were studied in presence of suction and injection.
Abstract: In this paper, stagnation flow of a micropolar fluid towards a vertical permeable surface with two cases, Newtonian fluid (K = 0) and non-Newtonian fluid (K = 1) are studied in presence of suction and injection. The transformed non-linear equations are solved analytically by homotopy analysis method and some results are compared with numerical solutions for validity. Analytical results for the velocity profiles, the temperature profiles, the skin friction coefficient and the local Nusselt number are presented for various values of the flow parameters and also these results demonstrate obvious effect of suction and injection on temperature profiles on investigation of such flows, particularly for non-Newtonian fluid.
4 citations
TL;DR: In this paper , the mass and momentum equations are non-dimensionalized and simplified using lubrication approximation theory (LAT), and the results are obtained for the velocity, pressure gradient, flow rate and shear stress, while coating thickness, maximum pressure, separating point, roll separating force and roll-transmitted power are found by Simpson's 3/8 rule.
Abstract: In this paper, the incompressible and isothermal flow of Sutterby fluid is investigated during the forward roll coating process. The mass and momentum equations are non-dimensionalized and simplified using lubrication approximation theory (LAT). Perturbative results are obtained for the velocity, pressure gradient, flow rate, and shear stress, while coating thickness, maximum pressure, separating point, roll separating force and roll-transmitted power are found by Simpson’s 3/8 rule. Outcomes exhibit that velocity, pressure gradient and coating thickness are substantially influenced by the non-Newtonian fluid parameter, which may increase the coating efficiency. Also, power input and roll separating force is directly proportional to the non-Newtonian parameter.
4 citations
TL;DR: In this article, the steady flow past a rigid sphere of a linear, homogeneous weakly anisotropic viscous incompressible fluid is studied in the Stokes approximation, and the solution is sought using the perturbation method and has the form of an expansion in particular solutions of the Laplace equation in Cartesian coordinates.
4 citations
TL;DR: In this paper, the velocity field and the adequate shear stress corresponding to the unsteady flow of a fractional Maxwell fluid due to a constantly accelerating circular cylinder have been determined by means of the Laplace and finite Hankel transforms.
Abstract: In this note the velocity field and the adequate shear stress corresponding to the unsteady flow of a fractional Maxwell fluid due to a constantly accelerating circular cylinder have been determined by means of the Laplace and finite Hankel transforms. The obtained solutions satisfy all imposed initial and boundary conditions. They can easily be reduced to give similar solutions for ordinary Maxwell and Newtonian fluids. Finally, the influence of pertinent parameters on the fluid motion, as well as a comparison between models, is underlined by graphical illustrations.
4 citations