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.

Analysis of Fluid Flow Through Fibrous Structures

Abstract: A two-dimensional Ising's model is used to study in-plane fluid flow through fibrous structures under pressure, a situation that is both general and more complicated than what is observed in the phenomenon of wicking in fibrous structures. The pressure drop between an inlet and the flow front is expressed in such mechanical energy terms as friction loss during flow, and thus the influence of pressure can be added to the total energy of the system derived from the fluid and the fibrous structure. A coefficient a is introduced and determined experimentally to denote the frictional effect of fibrous structures in the fluid flow path. A set of experiments illustrates fluid flow through a group of isotropic PET fiber mats with different fiber volume fractions and different influxes. Both experiments and simulation are in good agreement and show that the velocity of the fluid tends to decrease with the increased fiber volume fraction.

Some viscous fluid cosmological models of plane symmetry

Abstract: Two plane-symmetric cosmological models representing viscous fluid with free gravitational field of type D have been obtained. The effect of viscosity on various kinematical parameters has been discussed.

Non-newtonian power-law fluid flow past a shrinking sheet with suction

Abstract: The steady boundary-layer flow of a non-Newtonian fluid, represented by a power-law model, over a shrinking sheet is investigated. The transformed boundary-layer equation is solved numerically for some values of the power-law index n and suction parameter s. The effects of these parameters on the skin friction coefficient are analyzed and discussed. Different from those of a stretching sheet, the solutions are not unique and exist only if adequate suction on the boundary is imposed.

Using the Euler–Lagrange variational principle to obtain flow relations for generalized Newtonian fluids

Abstract: The Euler–Lagrange variational principle is used to obtain analytical and numerical flow relations in cylindrical tubes. The method is based on minimizing the total stress in theflow duct using the fluid constitutive relation between stress and rate of strain. Newtonian and non-Newtonian fluid models, which include power law, Bingham, Herschel–Bulkley, Carreau, and Cross, are used for demonstration.