Experimental Study on Heat Transfer of Dielectric Barrier Discharge Plasma Actuator Considering Heat Conduction of Dielectric Material
Experimental Study on Heat Transfer of Dielectric Barrier Discharge Plasma Actuator Considering Heat Conduction of Dielectric Material
复制标题
考虑电介质材料热传导的介质阻挡放电等离子体驱动器传热实验研究
DOI：
10.1115/fedsm2021-64270
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Nishida Hiroyuki
中科院分区：
文献类型：
--
作者：
Hatamoto Asami;Emori Kenta;Nishida Hiroyuki
等离子体执行器是一种利用大气介质阻挡放电的主动流量控制装置。它具有许多优点，有望应用于许多流体机械，包括增强对流冷却。然而，在将等离子体作动器应用于冷却领域时，存在一个显著的问题，即作动器本身由于放电而成为发热源。虽然已经有一些研究致力于了解等离子体致动器的加热特性，但他们只讨论了表面温度，并且没有对电介质的加热量进行任何定量讨论。本研究的目的是定量地讨论等离子体作动器介电表面的传热。为此，通过将其应用于执行器内部一维热传导的理论解，估计了壁面射流的传热系数和温度。利用红外相机测量了介质表面温度随时间的变化。结果表明，在电极边缘附近的估计是合理的，但由于介电介质中较小的温升和二维热传导，在下游得到了非物理值。在未来，我们需要利用数值计算来分析考虑二维热传导的问题。
The plasma actuator is an active flow control device utilizing the atmospheric dielectric barrier discharge. It has many advantages, and it is expected to be applied to a number of fluidic machines including enhancement of convection cooling. However, there is a significant problem when we apply the plasma actuator in the field of cooling, that is the actuator itself is a heat generation source due to the discharge. Although some research efforts have been devoted to understanding the heating characteristics of the plasma actuators, they made discussions only on the surface temperature, and any quantitative discussions on the amount of heating to the dielectric were not performed. The purpose of this study is to quantitatively discuss the heat transfer to the dielectric surface of the plasma actuator. For this purpose, the heat transfer coefficient and temperature of the wall-surface jet are estimated by applying it to a theoretical solution of the one-dimensional heat conduction inside the actuator. The time variation of temperature of the dielectric surface is measured using the IR camera. As a result, the estimation was reasonable near the electrode edge, but unphysical values were obtained downstream because of the small temperature rise and two-dimensional heat conduction in the dielectric. In the future, we need to analyze considering two-dimensional heat conduction utilizing numerical calculation.