The advances of many future engineering applications rely on effective cooling techniques. Beyond the traditional thermal management solutions, design potential unsteady impingement is still under-explored. As a combined experimental and numerical study, this paper reports new findings high-amplitude intermittent with controlled patterns. Specifical attention was paid flow close time ratio. wor...

Leading edge cooling cavities in modern gas turbine airfoils play an important role in maintaining the leading edge temperature at levels consistent with airfoil design life. These cavities often have a complex cross-sectional shape to be compatible with the external contour of the blade at the leading edge. Furthermore, to enhance the heat transfer coefficient in these cavities, they are often...

This research is an effort to demonstrate the applicability of miniaturized synthetic jet (microjet) technology to the area of thermal management of microelectronic devices. Synthetic jets are jets which are formed from entrainment and expulsion of the fluid in which they are embedded. Design issues of microjet cooling devices are discussed along with characterization of excitation elements and...

This paper reports an investigation into the use of CFD methods for modelling the combined fluid flow and heat transfer in a generic combustor heatshield geometry typical of current aeroengine designs. The study describes the development and testing of a conjugate heat transfer methodology, to allow the CFD code to predict the heat exchange in both fluid and solid regions of the solution domain...

conclusions in 88% of primary osteoarthritis cases we found fai morphology on the ap pelvic radiograph, similarly to those found in the bibliography, and we considered naming primary osteoarthritis, secondary osteoarthritis caused by fai. in the majority of cases, early diagnosis with simple, cheap and easily accessible ap pelvic radiograph with low dose of radiation may also be warranted backg...

Experiments were performed to investigate single-phase heat transfer from a smooth 12.1'x 12.7 mm simulated chip to a two-dimensional jet of dielectric Fluorinert FC-72 liquid issuing from a thin rectangular slot into a channel confined between the chip surface and nozzle plate. The effects of jet width, confinement channel height, and impingement velocity have been examined. Channel height had...