INFLUENCE OF WETTING PROPERTIES ON DRYING BEHAVIOR OF HIGHLY POROUS PARTICLE AGGREGATES

摘要：

　　The influence of wetting properties on drying behavior of highly porous particle aggregates is investigated experimentally and by pore-scale simulations.X-ray microtomography has been used to track the evolution of the liquid distribution in the pore space of a model particle aggregate subjected to convective drying from top face.For the same model system,3D numerical simulations based on volume-of-fluid method have been used to calculate liquid distributions over time.Results are presented as phase distributions,indicating that the wetting property of the solid influences the liquid phase distribution over time and affects the dynamics of the receding drying front.

关键词： sintered structures capillary effects gel drying X-ray microtomography volume-of-fluid method

作者: A.Kharaghani C.Kirsch E.Tsotsas

作者单位: Thermal Process Engineering,Otto von Guericke University Magdeburg Universitaetsplatz 2,39106 Magdeb Department of Mathematics,University of North Carolina at Chapel Hill Chapel Hill,NC 27599-3250,USA

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: 1-9

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）