刀板结构介电液体浸没射流冷却实验研究

The flow technology driven by active electric field has the inherent advantages of no moving parts, intelligent control, low power consumption and low vibration, which is very suitable for thermal management in microgravity space. In this paper, the heat transfer and flow characteristics of 25# transformer oil’s submerged jet cooling driven by electric field in asymmetric blade-plate electrode configuration are studied. The experimental results shows that the average Nusselt number of heat transfer increases with the applied electric field intensity. The effect of heat transfer enhancement is more obvious when the blade electrode is applied negative voltages. The average Nusselt number can be increased by up to 82.5%, and the power consumption of electric field is only 0.036 W. The Coulomb force is the dominant force for electric field acting on the flow and heat transfer enhancement.