For applications requiring high local heat transfer rates, recent research has shown that impinging synthetic jets perform comparably to continuous jets, yet without needing external mass flow input. In spite of recent attention, the understanding of synthetic jet heat transfer mechanisms remains incomplete. The heat transfer performance strongly depends on flow conditions (e.g. Reynolds number, stroke length), geometric parameters (e.g. jet-to-surface distance, orifice shape). Furthermore, vortex trains of adjacent synthetic jets can interact to establish flow vectoring and significant heat transfer enhancements. Most parameters (stroke length, jet-to-surface distance, phase lag between adjacent jets) have a highly non-monotonic influence on heat transfer performance. 丹迪激光多普勒測速儀 Dantec LDA/LDV 丹迪激光多普勒測速儀 Dantec LDA/LDV（Laser Doppler Anemometer）