This research attempts to investigate the thermal performance of solar air collectors with pin fins and turbulators. Incorporating carbon-nanotube-based turbulators in can enhance their due high conductivity, low weight, aspect ratio. In present study, numerical analyses a collector are carried out its effect on Nusselt number. The paper begins analysis conventional compares them theoretical re...

Surface texture influences friction and transfer layer formation during sliding. In the present investigation, various kinds of surface texture with varying roughness were produced on steel plates. Pins made of Mg-8Al alloy were then slid against the prepared steel plates using inclined pin-on-plate sliding tester to understand the role of surface texture of the harder surface and load on coeff...

in this paper, two-dimensional heat transfer in a semi-infinite wall with fins of rectangular profile has been investigated. the conduction equations of the wall and fins are solved simultaneously by a numerical method. the principal parameters of the problem are the fin spacing, length, and fin-to-wall conductivity ratio. in this investigation, the effect of these parameters on two-dimensional...

Plate fin-tube heat exchangers are widely used in air conditioning and refrigeration systems other industry fields. Various errors made the manufacturing process can result formation of an gap between tube fin. Several numerical simulations were carried out for a symmetric section plate exchanger to study influence on transfer under periodic flow conditions. Different locations sizes spanning 1...

THE JOURNAL OF BONE AND JOINT SURGERY alternative methods, such as epiphyseodesis by inserting a bone peg (Weiner et al. 1984). The hook-pin has eliminated the risk of lost epiphyseal grip : it cannot slide back and it is retracted in its channel with the growth of the femoral neck. Inserted in a pre-drilled hole there is only minimal trauma to the growth plate ; and as only one pin (inserted u...

The pectoral fins of Acipenseriformes possess endoskeletons with elements homologous to both the fin radials of teleosts and the limb bones of tetrapods. Here we present a study of pectoral fin development in the North American paddlefish, Polyodon spathula, and the white sturgeon, Acipenser transmontanus, which reveals that aspects of both teleost and tetrapod endoskeletal patterning mechanism...

Abstract Fins are extended surfaces to increase convection heat transfer. Conventional fins made of solid metals and alloys. Liquid such as sodium have melting points below atmospheric temperature. lower specific heats higher thermal diffusivity when compared metals. These properties can be used in enhancing In the present work, a numerical model is developed for analyzing effect capsulating li...

This paper presents a simulation of plate fin heat exchanger with the aim choosing optimized geometry and design parameters among given set using Unisim Design software. The includes an analysis effects varying on total annual cost exchanger. Results from indicate that can be used to different variants plate-fin further optimization cost, load or any other parameters. work provides useful insig...

Fractures of the proximal femur are a big challenge in traumatology. Rapid strides in implant and instrumentations in quest of ideal fixation of pertrochanteric and subtrochanteric femoral fractures have made various options available like Fixed-angled nail plate, Screw plates, Angled blade plate, Dynamic Hip Screw etc. The present study aims to study the role of standard PFN as a minimal invas...