The heat transfer enhancement of air-cooled heat sink using multiple synthetic jets is investigated experimentally. A heat sink is located inside synthetic jet actuator cavity in order to reduce space occupied by the cooling device. It has been observed that heat sink located inside the synthetic jet actuator cavity dissipates heat in a manner similar to the heat sink cooled by impinging synthetic jet. The thermal resistance of the heat sink depends on the synthetic jet Reynolds number and dimensionless stroke length. The paper presents experimental results of synthetic jet Reynolds number, dimensionless stroke length as well as the heat sink thermal resistance and coefficient of performance. The value of the heat sink thermal resistance of 0.22 K/W was measured during operation of synthetic jest cooling while the thermal resistance of the heat sink without loudspeaker was found to be 1.4 K/W. A correlation of thermal resistance as a function of Reynolds number and dimensionless stroke length based on the experimental results is presented and discussed.

实验研究了使用多个合成射流增强空气冷却散热器的传热效果。散热器位于合成射流致动器腔内，以减少冷却装置占用的空间。已经观察到，位于合成射流致动器腔体内的散热器以类似于通过撞击合成射流冷却的散热器的方式散发热量。散热器的热阻取决于合成射流雷诺数和无因次冲程长度。本文介绍了合成射流雷诺数，无量纲行程长度以及散热器的热阻和性能系数的实验结果。散热器的热阻值为0。在合成装置冷却操作期间测得22 K / W，而发现没有扬声器的散热器的热阻为1.4 K / W。基于实验结果，提出并讨论了热阻与雷诺数和无量纲行程长度之间的关系。