The presence of sand close to hydrocarbons in production is most often harmful well productivity. This also leads undesired problems surface devices and equipment, as obstructions the column and, consequently, decreasing fluid flow causing severe economic losses field. objective this work study influence content pipelines through simulation using computational dynamics tools ICEM CFD ANSYS CFX ...

This study explores the numerical optimization of water turbine runner profile performance using a surface vorticity model algorithm. The is designed on laboratory scale and operates at net head 0.09 m, 400 rpm, flow rate 0.003 m3/s. initial design was optimized to minimize losses in hydrofoil. algorithm coded MATLAB software obtain optimal stagger angle that will be used design. Furthermore, v...

To analyze the influence of tapered form two upper vertices a rectangular cube placed in channel and impact insertion hollow center obstacle, three-dimensional study was executed using K-ω SST turbulence model. Different models were presented to examine features flow with Reynolds number Re=4×104. The kinetic energy, 2D 3D time-averaged streamlines, trace-lines, streamwise velocity profiles, pr...

The urgency of the paper is determined by necessity to predict results tests for determining coefficient hydraulic resistance axially symmetrical check valve DN 100-600 with operating pressure up 20 MPa and temperature from plus 50C 3500C according TS 6981-254-08847871-07. This suggests reduce volume excluding intermediate samples valves (DN 100, DN125, 200, 300, 500, 600) situated in between t...

Currently, among the most popular computational fluid dynamics software packages are commercial CFD – ANSYS CFX, Fluent, STAR-CCM+ and several others. In contrast to above-mentioned packages, there is an OpenFOAM, a non-commercial, freely distributed, integrated platform for numerical modeling of solid-state mechanics tasks (including tasks), it becoming more popular. addition being non-commerc...

Aerodynamic behaviour of an object depends on several factors, namely shape, size and flow conditions. Thus, CFD simulations are effective engineering tools that allows major contribution to understand the conditions around object. This study aims analyse effect two typesof spherical modelsthat aresphere hemisphereon aerodynamics for different Reynolds number between 100,000 ≤ Re 800,000. Geome...

At present, software products for numerical simulation of fluid dynamics problems (ANSYS Fluent, Ansys CFX, Star CCM, Comsol, etc.) are widely used. These mainly based on the solution Navier–Stokes equations, most common and computationally easy method solving, which is Reynolds averaging (RANS), further closing system using semi-empirical turbulence models. Currently, there many modeling metho...

Di- and tripeptides, as well as peptidomimetic drugs such as cephalexin (CFX), are absorbed by enterocytes via the oligopeptide transporter PepT1. We recently showed that the alpha(2)-adrenergic agonist clonidine increases CFX absorption in anaesthetized rats. Herein, we investigated whether alpha(2)-adrenergic receptors can directly affect PepT1 activity in a clone of the differentiated human ...

A novel approach of simulating hydromechanical coupling in pore-scale models of porous media is presented in this paper. Parameters of the sandstone samples, such as the stress-strain curve, Poisson's ratio, and permeability under different pore pressure and confining pressure, are tested in laboratory scale. The micro-CT scanner is employed to scan the samples for three-dimensional images, as ...