DRYING OF DROPLET CONTAINING INSOLUBLE NANOSCALE PARTICLES:NUMERICAL SIMULATIONS AND PARAMETRIC STUDY

摘要：

　　To reliably predict particle microstructure during drying for industrial and academic purposes,a theoretical model of the drying process was developed.We examined various possible morphological structures of droplet/particle depending on pressure,temperature and other droplet and drying agent properties.The presented model of the droplet drying contains a qualitative description of the overall drying process and a mathematical model for the first stage of drying,including the transition period,which was validated here with good agreement to experimental measurements.The implementation and compatibility of the numerical solution using different solid diffusion coefficients is explained and compared.Moreover,the importance of choosing an appropriate solid diffusion coefficient is indicated.Handscomb?s expression for the diffusivity of nanoscale silica particles was found to be the most accurately describing the intra-droplet diffusion during the drying of silica nanosuspension droplet.

关键词： droplet drying nanoscale particle diffusion coefficient numerical simulation

作者: U.Maurice M.Mezhericher A.Levy I.Borde

作者单位: Pearlstone Centre for Aeronautical Engineering Studies Department of Mechanical Engineering,Ben-Guri Department of Mechanical Engineering,Shamoon College of Engineering Bialik/ Basel Sts.,Beer-Sheva,84

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-8

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）