Development of A New Flow Visualization Technique for External Flows

小行星9411980 本文提出了一种新的大尺度流动结构显示技术，特别适用于湍流涡流。 该方法包括在产生可视化流体细丝，特定密度接近统一，然后使用它们作为示踪剂。 关键问题是保持丝的连贯性和直径。 长链聚合物溶液和特别制备的表面活性剂溶液将用于长丝。 双曝光照片，定量评价局部流动结构。 该方法简单，成本效益高，一旦确定了长丝的最佳组成，就可以很容易地应用。 ***

9411980 Hoyt A novel flow visualization technique for large scale flow structures, with particular application to turbulent eddy flows, is proposed. The method consists in generating visualizing fluid filaments, of specific density close to unity, and then using them as tracers. The essential issue is maintaining the filament coherence and diameter. Long-chain polymer solutions and specially prepared surfactant solutions will be used for filaments. Dual exposure photographs, with quantitatively evaluate local flow structures. The method is simple, cost effective and can be easily applied once the best composition of the filament has been established. ***