PDMS-环己烷体系中起泡脱挥气泡场全息记录与再现

Dynamic Bubble Characteristics for FoamDV in PDMSCyclohexane the Holographic Record and Reconstruction

ＰＤＭＳ－环己烷体系中起泡脱挥气泡场全息记录与再现鲁阳谢建军潘勤敏潘祖仁（浙江大学力学系，杭州３１００２７）（浙江大学高分子科学与工程研究所）关键词起泡脱挥气泡场象平面全息１前言化学工程中多相流粒子场（气泡、液滴、固体粒子）特性研究多采用普通摄影或...

The holographic record and reconstruction (a laser reconstruction and a white light reconstruction) of the dynamic bubble character for foam devolatilization (FoamDV) in polydimethylsioxane (PDMS)cyclohexane system are studied. The results are as follows. Photos obtained by the reconstructing methods have the similar information. The bubbles are spherical. They move up almost straightly and grow continuously. The bubbles and their size distributions change with vacuum and initial cyclohexane concentration. When a hologram is reconstructed, there is a bright spot in the center of the bubble image on a focal plane. Otherwise, there is no any bright point in the bubble center out of the facal plane. The difference between the laser reconstruction and the white light reconstruction is that the bubbles for the different focal plane can not be reconstructed for the latter.The affecting factors are all discussed on a hologram quality, the diffraction efficiency, and a hologram reconstruction, the particle density limitations for inline and offline holography