Modern drilling fluids are non-linear viscous media with an initial shear stress. In classical scientific works on hydromechanical modeling of motion in pipes and annular channels the Shvedov – Bingham approximation Ostwald de Waale power-law model were used, which did not fully account for behavior technological a wide range rates. This article presents numerical solution mathematical fluid th...

The paper is devoted to the numerical study of two-dimensional convective motion a viscoplastic fluid in closed region under lateral heating. problem solved numerically using ANSYS Fluent software. Bulkeley-Herschel model describing behavior was chosen as non-Newtonian model. Under certain rheological parameters, this reduced Newtonian model, which also investigated limit case. Based on results...

Abstract In the paper, it is demonstrated how a Herschel–Bulkley fluid model, where parameters are selected from relevant shear rate range of flow and parametrically independent, can be used for pressure loss calculations. The model found to provide adequate predictions axial in an annulus inner cylinder does not rotate. It described one simplify slot approximation using (Founargiotakis model)....

The settlement drag coefficient of non-spherical particles (SDCNPs) is a crucial parameter in the field petroleum engineering. Accurately predicting SDCNPs fluid essential to selection and design proppant hydraulic fracturing scheme. Although many models for anticipating have been proposed, none them can be adopted non-Newtonian (NNF) Newtonian (NF). In investigation, NF NNF are studied experim...

The presence of stenosis at the wall artery lead to further cardiovascular diseases such as heart attack, stroke and many more. Treatment a stenosed includes insertion catheter through which affects blood flow solute dispersion. This present study focuses on effect radius height dispersion behavior. problem is modelled using Herschel-Bulkley fluid represent rheology, with boundary conditions. A...

A spectral element—Fourier method (SEM) for Direct Numerical Simulation (DNS) of the turbulent flow of non-Newtonian fluids is described and the particular requirements for non-Newtonian rheology are discussed. The method is implemented in parallel using the MPI message passing kernel, and execution times scale somewhat less than linearly with the number of CPUs, however this is more than compe...