Among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. In this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation efficiency and pressure drop ratio have been investigated along the hydrocyclone body. Al...

Wall-to-bed (or wall-to-fluid) heat transfer issues in trickle bed reactors (TBR) has an important impact on operation and efficiency in this category of reactors. In this study, the hydrodynamic and thermal behavior of trickle bed reactors was simulated by means of computational fluid dynamics (CFD) technique. The multiphase behavior of trickle bed reactor was studied by the implementation of ...

The present study aims at study on combined effect of zinc oxide nanoparticles (ZnO) with common agricultural fungicides. Nanoparticles were synthesized using chemical reduction process and characterized by UV-Visible spectroscopy, X-ray diffraction (XRD), Dynamic Light Scattering (DLS) and Transmission Electron Microscopy (TEM). Synthesized nanoparticles were observed to be in size range of 12...

The behavior of a particle mixture composed short fibers and silicon carbide powder in variable proportions has been experimentally investigated. study shows that the hydrodynamic bed initially is affected as soon few percent are added. minimum fluidization velocity (Umf) globally lowered intrinsic properties porous medium (equivalent diameter, porosity, flow coefficients…) altered. Several equ...

Efficient infrared lumophores are urgently needed in a host of biological sensing applications.1 Such applications demand light emitters that meet a number of requirements simultaneously. First, the light-emitting species must be stable and bright (quantum yield >10%) under biologically relevant conditions including buffered conditions. In addition, emission in the near-IR (NIR) and shortwavele...

objective(s):iron oxide nanoparticles have found prevalent applications in various fields including drug delivery, cell separation and as contrast agents. super paramagnetic iron oxide (spio) nanoparticles allow researchers and clinicians to enhance the tissue contrast of an area of interest by increasing the relaxation rate of water. in this study, we evaluate the dependency of hydrodynamic si...

Recently, the diameters and construction water depths of pile foundations planned newly built sea-crossing bridges have been increasing greatly. Hydrodynamic loads are key control factors in design super-large-diameter piles. However, most previous studies focused on inline force with a small diameter, there were few cases to consider impact transverse hydrodynamic load under wave-current actio...

In the current analysis, effects of circumferential scratches along inner surface a 170ᵒ -arc partial journal bearing has been numerically investigated. Their impact on thermo-elasto-hydrodynamic performance characteristics, including maximum pressure, temperature, deformation, and stress, examined thoroughly. The ANSYS Fluent CFD commercial code was employed to tackle iterative solution flow h...