School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
Opt Lett. 2013 Jun 1;38(11):1893-5. doi: 10.1364/OL.38.001893.
Quantitative application of digital in-line holography (DIH) to characterize multiphase fragmentation is demonstrated. DIH is applied to record sequential holograms of the breakup of an ethanol droplet in an aerodynamic flow field. Various stages of the breakup process are recorded, including deformation, bag growth, bag breakup, and rim breakup. A recently proposed hybrid method is applied to extract the three-dimensional (3D) location and size of secondary droplets as well as the 3D morphology of the rim. Particle matching between sequential frames is used to determine the velocity. Coincidence with the results obtained from phase Doppler anemometry measurement demonstrates the accuracy of measurement by DIH and the hybrid method.
本文展示了数字在线全息术（DIH）在多相破碎特性定量分析中的应用。DIH 用于记录乙醇液滴在空气动力学流场中破碎的连续全息图。记录了破碎过程的各个阶段，包括变形、袋状生长、袋状破裂和边缘破裂。应用最近提出的混合方法提取二次液滴的三维（3D）位置和尺寸以及边缘的 3D 形态。通过连续帧之间的粒子匹配确定速度。与相位多普勒风速仪测量结果的一致性证明了 DIH 和混合方法测量的准确性。
