Pressure field of a rotating square plate with application to windborne debris
Pressure field of a rotating square plate with application to windborne debris
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DOI：
10.12989/was.2012.15.6.509
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发表时间：
2012-11
影响因子：
1.6
通讯作者：
P. Martinez-Vazquez;Bruce Kakimpa-;M. Sterling;C. Baker;A. Quinn;P. Richards;J. Owen
中科院分区：
文献类型：
--
作者：
P. Martinez-Vazquez;Bruce Kakimpa-;M. Sterling;C. Baker;A. Quinn;P. Richards;J. Owen
传统上，关于在空气中飞行时作用在平板上的气动力和力矩系数的准定常响应是假定的。这种假设使人们能够预测风吹碎片的飞行路径，并推断出其潜在损害的迹象。为了研究这一假设的细节，一系列的物理和数值模拟有关的平板自转已进行。物理实验已经进行了使用一种新的压力采集技术，它提供了一个描述的压力分布在一个正方形板，允许自动旋转在不同的速度，通过修改的速度来流。目前的工作首次使自旋转平板表面上的特征压力信号归因于旋涡脱落。
Traditionally, a quasi steady response concerning the aerodynamic force and moment coefficients acting on a flat plate while `flying` through the air has been assumed. Such an assumption has enabled the flight paths of windborne debris to be predicted and an indication of its potential damage to be inferred. In order to investigate this assumption in detail, a series of physical and numerical simulations relating to flat plates subject to autorotation has been undertaken. The physical experiments have been carried out using a novel pressure acquisition technique which provides a description of the pressure distribution on a square plate which was allowed to auto-rotate at different speeds by modifying the velocity of the incoming flow. The current work has for the first time, enabled characteristic pressure signals on the surface of an auto-rotating flat plate to be attributed to vortex shedding.