Heat transfer enhancement from tube bank in cross flow with air can be achieved for energy saving by enhancing the turbulence nature. Adding splitter plates (SPs) to tubes? trailing edges, besides, increasing heat surface?s roughness are proposed options enhance turbulence. However, few literatures available discuss this, moreover, almost all Computational Fluid Dynamics (CFD) models employ Reynolds-Averaged Navier-Stokes (RANS) and away using Large Eddy Simulation (LES). Accordingly, this...

This paper intentions to study the effect of using different tapered longitudinal section manifolds rather than uniform one, in a Z shaped flat plate solar collector on; uniformity flow distribution, pressure drop, and consequently temperature profile. To this end, 3D CFD model is planned mimic parallel piping network configuration. Considering both fluid body domains, moreover, inlet outlet junctions, that would affect resulted system drop. The has following specifications: header diameter...

The current study represents a numerical investigation of the pin fin heat sink performance with different angles wings. Five ranging from 0° to 90° have been represented and studied under inline staggered arrangements fins. Reynolds numbers range 13,500 37500. highest Nusselt number has achieved by angle-0° arrangement while it angle-22.5° arrangement. On other hand, maximum friction factor both is angle-0°. thermohydraulic for case without wings gives Using in shows significant effect on...

Time-dependent measurements are essential to describe the temperature and heat transfer coefficient development lead understanding unsteady nature of tunnel kiln behavior during cooling. The present paper introduces experimental investigations in a brick equipped with U-shape guide vane monitor its transient thermal behavior. test rig scale 1:4 has been fabricated for this purpose. Three vanes have attack angles (θ = 120°, 135°, 150°) positioned flow direction used direct confined zone among...

Many options are devoted to enhancing heat transfer alongside lowering the pressure drop inside tube banks in cross flow with air. Among these, is attaching splitter plates (SPs) trailing edges of tubes as extended surfaces. That already proved from literature its effective use. Another proposed option increase surface's roughness, limited available data literature. Thus, present research was established study effect using different surface roughness a staggered tube-bank air on transferred...

Numerical simulation has been used in the current work to investigate improving cool-down of electronic parts cubical form involving dummy within a rectangular duct. Three working fluids (air, CO2, and helium) were cool 12 electrical chip arrays The investigates effects cooling fluid type shifting hot element placements on whole functioning at various Reynolds numbers. Also, impact distance among is researched. This accomplished by moving heat sources while leaving other components their...

This paper discusses the transport of granular materials through flighted rotary drums operated at optimum loading. A mathematical model is derived from force balance acting on a single traveling particle, to predict mean residence time transportation. Based available parameters height falling curtains and final discharge angle, this can be helpful estimate appropriate solid feeding rate. Two steps were followed implement use model. Firstly, experiments carried out batch drum obtain needed...

The higher the process efficiency, lower fuel consumption, and less impact carbon emissions have on environment. flow characteristics around brick settings are an important field of investigation to acquire control over energy intake production process. current work is a numerical CFD demonstrate fluid characterization inside cooling zone in tunnel kiln for lattice (the number bricks each layer identical). Four different were examined, three validated with published experimental data...

In this work, numerical simulation has been done to study the cooling enhancement of electronic components cubical shapes including dummy elements inside a rectangular duct. The 12 chips (3 ? 4 array) dimensions (50 mm 50 10 mm) are tested in an air duct (350 3500 60 mm). aim is influence changing positions hot on overall performance at different Reynolds numbers. Moreover, effect spacing between studied. This achieved by position heat sources while keeping other as dummies keep flow...

The study of energy savings in ventilation systems within buildings is crucial. Impinging jet (IJV) have garnered significant interest from researchers. identification the appropriate location for IJV reveals a gap existing literature. This research was conducted to address by examining impact on and thermal comfort. A comprehensive three-dimensional CFD model examined accurately simulate real environment an office room (3 × 3 2.9 m3) during cooling mode, without application symmetrical...

The present paper goal is to compile a comprehensive database of data on the pressure drop and flow distribution uniformity utilizing CFD in network parallel tubes arranged Z configuration adopted for flat plate solar collectors. A 3-D model implemented simulate such system as market, including two domains: tube materials fluid, besides entering, exiting prolonged ports. specifications are disposition uniform inlet outlet headers diameter (D = 20 mm), length 1150 mm, 1780 mm. investigated...

In this work, numerical simulation has been done to study the cooling enhancement of electronic components cubical shapes including dummy elements inside a rectangular duct. 12 chips (3 x 4 array) dimensions (50 mm 50 10 mm) are tested in an air duct (350 3500 60 mm). The aim is influence changing positions hot on overall performance at different Reynolds numbers. Moreover, effect spacing between studied. This achieved by position heat sources while keeping other as dummies keep flow...