In this paper, film thickness and pressure distribution of EHL in line contacts for four kinds of greases and one type of oil are calculated under a series of rolling velocities by wing an inverse solution method. The Herschel-Bulkley model is wed for the rheological characteristics of the grease. Based on the theoretical analysis and numerical calculation, the following influences on film thic...

We consider the rheology of soft-core frictionless disks in two dimensions in the neighborhood of the athermal jamming transition. From numerical simulations of bidisperse, overdamped, particles, we argue that the divergence of the viscosity below jamming is characteristic of the hard-core limit, independent of the particular soft-core interaction. We develop a mapping from soft-core to hardcor...

In this study, predictive capabilities of apparent viscosity of oil-based drilling fluids which is used in National Iranian South Oilfields Company (NISOC) were evaluated using Newtonian and non-Newtonian models to drive a new suitable equation. The non-Newtonian models include Bingham plastic, Power law, Herschel-Bulkley, Casson, and Robertson-Stiff. To validate the results, the calculated vis...

Material extrusion, a filament-based three-dimensional (3D) bioprinting technique, is commonly adopted to fabricate many complex constructs for its high efficiency, compatibility with variety of biomaterials, and easy realization. During extrusion bioprinting, the morphology (including shape size) extruded filaments great interest since are basic building blocks printed 3D structures filament d...

The aim of this research is to investigate the effects rheological models shear-thinning fluids and their estimated parameters on predictions laminar, transitional, turbulent flow. investigation was carried out through experimental computational fluid dynamics (CFD) studies in horizontal pipes (diameters 19.1 mm 76.2 mm). Six using Reynolds averaged Navier–Stokes equations CFD_ANSYS Fluent 19.0...

The evolution of a submarine landslide is very complicated process due to slurry–water interactions. Most previous studies have focused on debris flows or turbidity currents independently. Little research has been conducted the processes transformation from into currents. Moreover, underlying mechanical mechanisms these are not well understood. In this study, we aimed better understand by simul...