Multiple orifice synthetic jet for improvement in impingement heat transfer.

摘要: Abstract Synthetic jet is potentially useful for cooling of electronic components and its utility has been investigated in previous studies. will become further attractive if additional can be obtained without a corresponding increase the input power. In this context, we explore use multiple orifice single-cavity synthetic employed direct impingement mode cooling. Experiments are conducted different configurations with center surrounded by satellite orifices. The Reynolds number range 1000–2600 while normalized axial distance varied 1–30 study. maximum heat transfer coefficient approximately 12 times that natural up to 30% more as compared conventional single jet. Interestingly, average Nusselt gets maximized at two distances-the peaks comparable magnitude. appearance, location magnitude depend on orifices pitch circle radius which holes lie. It proposed transition flow behavior from multiple-jet combined-jet occurs, leads appearance peak. peak (at smaller distance) utilized design solutions compact devices. power reduces slightly multi-orifice case respect design. velocity surface also help hot-wire anemometry. does not appear have explored earlier results expected several practical applications.