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 nanoparticles and diffe...

In order to clarify the influence of feed rate on a hydrocyclone flow field, numerical simulation was employed model pressure velocity air column, turbulent kinetic energy, and split ratio. The results revealed that static pressure, tangential velocity, radial increased with an increase in rate. When at inlet increases from 1 m/s 5 m/s, 5.49 kPa 182.78 kPa, 1.97 11.16 0.20 1.16 demonstrating hi...

The performance of proton-exchange membrane fuel cell cooling system using coolant flow channels enhanced with baffles was numerically investigated. To do this, the maximum temperature of the cooling plate, temperature uniformity and also pressure drop along the flow channels were compared for different cases associated with number of baffles and their dimensions inside the channels. The govern...

In Oil and gas productions, the severe slug is an undesired flow regime due to negative impact on production rate facility safety. This study examines riser-induced slugs’ influence a typical separation process, consisting of 3-phase gravity separator physically linked deoiling hydrocyclone. Four inflow scenarios are compared: Uncontrolled, open-loop, feasible, infeasible closed-loop anti-slug ...

In this article, stream flow effectivness is based on hydraulic network studied in the shell-side of a shell and tube heat exchange as a case study. For an appropriate heat exchangers rating design to meet a specified duty, it's better to consider each stream flow separately. Using the hydraulic network principals, a set of the correlations for calculating different stream flow rates in the cro...

Aiming at the separation of mud and sand in natural gas hydrate, for designed built-in twisted tape hydrocyclone, numerical simulation method was used to study effects different types operating conditions on internal flow field efficiency, influence hydrate particle size distribution. The research results show that has same swirling direction as which is beneficial improving intensity, ability ...

In a polymer membrane fuel cell more than half of the chemical energy of hydrogen is converted to heat during generation of electricity. This causes an increase in the cell temperature. The Cooling field design has a significant role in cell cooling. The cell's performance and stability are reduced due to inappropriate heat dissipation. In this paper, the cooling flow and heat transfer in cooli...