Maximizing ion-driven gas flows
Maximizing ion-driven gas flows
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DOI：
10.1016/j.elstat.2005.09.005
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发表时间：
2006-06-01
影响因子：
1.8
通讯作者：
Carleton, Fred
中科院分区：
文献类型：
--
作者：
Rickard, Matthew;Dunn-Rankin, Derek;Carleton, Fred
当电场中有组织的离子流引发中性分子的离子驱动风时，会产生中等速度的气流。当周围空气中的针被充电到足以在其尖端附近产生电晕放电的电势时，可以在环形或其他可渗透的电晕电极的下游利用这种气流。鉴于此类设备的潜在实际应用，因为它们代表没有移动部件的鼓风机，我们从理论上和实验上研究了提高其流速的方法。评估的参数包括电场线的发散，避免第二电极上的高曲率区域，控制大气湿度，以及使用线性阵列的阶段，终止于收敛喷嘴。我们发现，离子风力发电机的行为类似于风扇，我们的修改已经增加了一倍以上的最大离子驱动的风速以前报道。(c)2005 Elsevier B.V.保留所有权利。
Gas flows of modest velocities are generated when an organized ion flux in an electric field initiates an ion-driven wind of neutral molecules. When a needle in ambient air is electrically charged to a potential sufficient to produce a corona discharge near its tip, such a gas flow can be utilized downstream of a ring-shaped or other permeable earthed electrode. In view of the potential practical applications of such devices, as they represent blowers with no moving parts, we investigate methodologies for increasing their flow velocities, both theoretically and by experiments. The parameters evaluated include divergence of electric field lines, avoidance of regions of high curvature on the second electrode, control of atmospheric humidity, and the use of linear arrays of stages, terminating in a converging nozzle. We find that the behavior of ionic wind generators is analogous to that of fans and our modifications have more than doubled the maximum previously reported ion-driven wind velocities. (c) 2005 Elsevier B.V. All rights reserved.