کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
647057 | 1457171 | 2012 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Heat transfer enhancement in micro-channel with multiple synthetic jets Heat transfer enhancement in micro-channel with multiple synthetic jets](/preview/png/647057.png)
A three-dimensional computational model has been developed to investigate the effect of multiple synthetic jets interaction with cross-flow in micro-channel on the cooling of microchip. Studies were performed with the use of two micro jets being in-phase and 180° out-of-phase at two different operating frequencies and a fixed diaphragm amplitude. The addition of one synthetic jet was shown to achieve greater mixing of flow in the micro-channel than those with single synthetic jet. Greater heat transfer enhancement was achieved with double synthetic jets. Results showed that greater cooling enhancement could be achieved with the out-of-phase flow configuration at oscillating frequency of 560 Hz compared with the in-phase flow configuration. However, the effect of the actuation phase at a frequency of 1120 Hz was found to be insignificant. With double synthetic jet actuators operating out-of-phase, a mere 0.1 K reduction was achieved in maximum silicon temperature compared with in-phase flow jets. The greater the mixing of flow in the micro-channel in either in-phase or out-of-phase flow configuration due to higher jets Reynolds number resulted in the constraint in further cooling enhancement despite having different phases of the flow configuration.
► Interaction of two synthetic jets with cross-flow in micro-channel was computationally investigated.
► Two jets were performed in-phase and 180° out-of-phase.
► Various operating frequencies were also performed.
► Greater cooling enhancement could be achieved with the out-of-phase flow configuration at oscillating frequency of 560 Hz.
Journal: Applied Thermal Engineering - Volume 48, 15 December 2012, Pages 275–288