ENDGAME - Laboratory Experiment 2022-11-29 Exp. 004 - Part 2 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air in a 2D setup obtained using 2 parallel glass sheets (3 mm thickness) separated by rubber seals and filled with a viscous fluid. The viscous fluid is obtained mixing distilled water with a hair gel (2/3 distilled water, 1/3 hair gel). The gap between the two parallel sheets is 3 mm. Air was injected into the 2D setup through a capillary tube (~2 mm diam) with constant flow rate (~13x10^-3l/s). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.采用高速相机（high speed camera）与纹影阴影摄影术（Schlieren shadow photography）开展初步试验。本次试验获取了空气注入二维实验装置的影像，该装置由两块厚度为3 mm的平行玻璃板搭建，以橡胶密封圈分隔并填充粘性流体。该粘性流体通过将蒸馏水与发胶按2/3:1/3的比例混合制备而成，其中蒸馏水占2/3、发胶占1/3。两块平行玻璃板之间的间隙为3 mm。通过一根直径约2 mm的毛细管（capillary tube）以恒定流量（约13×10^-3 升/秒）向该二维实验装置中注入空气。高速相机的帧率为250帧/秒。本次纹影装置所使用的球面镜（spherical mirror）口径为75 mm，焦距为750 mm。