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مهندسی حرارتی کاربردی
جزئیات رویداد
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  • heat transfer enhancement in micro-channel with multiple synthetic jets

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 621
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     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.

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