Velocity-information-based force-term estimation of dielectric-barrier discharge plasma actuators
Velocity-information-based force-term estimation of dielectric-barrier discharge plasma actuators
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DOI：
10.1088/0022-3727/46/5/055202
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发表时间：
2013-01
期刊：
影响因子：
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通讯作者：
J. Kriegseis;C. Schwarz;C. Tropea;S. Grundmann
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文献类型：
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作者：
J. Kriegseis;C. Schwarz;C. Tropea;S. Grundmann
在介质阻挡放电等离子体致动器附近进行粒子图像测速测量，以量化等离子体向周围空气流的动量传递。基于这些数据的比较分析，现有的六种方法来估计诱导体积力。积分方法基于动量平衡方程计算致动器力的积分值。洞察力的空间分布的体积力是由微分方法，这是基于Navier-Stokes方程或涡量方程。结果表明，随着操作功率水平的增加，力的强度以及域增加。重点也放在自诱导阻力的问题。结果表明，30%的诱导动量被壁面摩擦消耗。所有的结果与先前获得的平衡力数据和光度分析相同的致动器进行了验证。
Particle image velocimetry measurements in close proximity to dielectric-barrier discharge plasma actuators are conducted to quantify the momentum transfer of the plasma to the surrounding air flow. Based on these data a comparative analysis of six existing approaches to estimate the induced body force is presented. Integral methods calculate an integral value for the actuator force based on the momentum-balance equation. Insight into the spatial distribution of the body force is provided by differential methods, which are based either on the Navier–Stokes equations or on the vorticity equation. It is demonstrated that the intensity as well as the domain of the force increase with increasing operating power levels. Emphasis is also placed on the issue of self-induced drag. It is shown that 30% of the induced momentum is consumed by wall friction. All results are validated with previously obtained balance force data and luminosity analysis of identical actuators.