Akademik Veri Yönetim Sistemi
Heat Transfer Research, cilt.0, sa.0, 2025 (Hakemli Dergi)
This study investigates the effects of synthetic jets on the constant surface temperature during cooling of finned and flat heat sinks. The purpose of the investigation is to increase the efficiency of two types of heat sinks using zero net mass flux synthetic jets to prevent overheating and premature failure. An experimental setup was built using plexiglass material and loudspeakers to design a special cube cavity that can produce synthetic jets. Heat sinks were heated using a silicon heater attached to a power source. Experiments were conducted on heated flat and finned surfaces using electromagnetic synthetic jets with various frequency values. The effects of the number of orifices, the ratio of height to diameter (h/d), and the number of loudspeakers on shaping synthetic jets were further examined. Applying a frequency of 200 Hz to the heated finned surface resulted in a decrease in surface temperature of approximately 57.1% with one loudspeaker and 47.1% with five loudspeakers. The effects of the amplifier on the experimental setup were investigated in the research. Moreover, at 200 Hz, the surface temperature decreased by around 44.5% when using an amplifier and by 2.5% without one. Additionally, the importance of the amplitude produced by the signal generator was examined, and a slight decrease in the heat transfer rate was observed.