The two-phase frictional pressure drop has a dominant effect in many industrial applications associated with the multiphase flow. This study investigated accuracy of several available methods for predicting different pipe diameters using 4124 experimental data points. It is observed that performance existing poor wide range operating conditions. Then, Artificial Neural Network models were propo...

in this paper, experimentally derived correlations of heat transfer and pressure drop are used in a pareto based multi-objective optimization (moo) approach to find the best possible combinations of heat transfer and pressure drop of tio2-water nanofluid flow in tubes fitted with multiple twisted tape inserts in different arrangement. in this study there are four independent design variables: t...

Faults-thin zones of highly localized shear deformation in the Earth-accommodate strain on a momentous range of dimensions (millimetres to hundreds of kilometres for major plate boundaries) and of time intervals (from fractions of seconds during earthquake slip, to years of slow, aseismic slip and millions of years of intermittent activity). Traditionally, brittle faults have been distinguished...

this paper addresses an experimental investigation in the hydrodynamic behavior of a modified slotted sieve tray. slotted sieve tray (push valve sieve tray) is a sieve tray that the push valves have been utilized on the tray deck to eliminate liquid gradients and non-uniformity of liquid distribution on the tray. the air-water system was used in an industrial scale experimental rig with an inte...

the effect of γ-al2o3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-al2o3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. since the properties of γ-al2o3-water nanofluids were variable, they were ...

lemon is one of the most important citrus fruit and is consumed as fresh and dry. in this study the effect of fruit moisture content on the size, sphericity, geometric mean diameters and kernel density were studied. the bulk density and porosity were also evaluated in three different arrangements. airflow resistance is a fundamental parameter for designing an efficient drying and aeration syste...

Adequately designed and positioned surface textures are recognized as a promising way to increase load-carrying capacity reduce frictional losses of journal bearings. The aim this work is analyze the local lubrication mechanisms in bearings from microflow perspective, while considering interactions between film formation whole bearing. For purpose, hydrodynamic models textured built. results sh...

The fluid flow and heat transfer in a three-dimensional microchannel filled with Al2O3- water nanofluid is numerically investigated. The hybrid scheme is used to discretize the convection terms and SIMPLER algorithm is adopted to couple the velocity and pressure field in the momentum equations. The thermal and flow fields were analyzed using different volume fractions of n...

This paper tends to investigate the performance of a separator cyclone used in cement industries in Iran. This investigation was performed using CFD modeling, which is validated by other valid studies. Separator cyclone performance includes of two important parameters as pressure drop and collection ratio. In this presented study, the pressure drop has been considered to assess the performance ...