PORE-SCALE COMPARISON OF LIQUID DISTRIBUTIONS BETWEEN PORE NETWORK DRYING SIMULATIONS AND X-RAY TOMOGRAPHY
For better understanding of micro-scale transport phenomena in porous media,convective drying experiment has been performed for dense particle packing and observed by X-ray tomography.Liquid distribution evolution during drying has been tracked after image processing of reconstructed 3D images.Based on center coordinates and radii of particles extracted from these images,a 3D irregular pore network with cylindrical pores has been generated by Voronoi tessellation and a node merging algorithm.The pore network drying model accounting for boundary layer,gravity and viscosity is applied to this network.The results of simulation and experiment are compared not only at the global level as evolution of liquid phase distribution and drying curve but also at voxel scale as saturation states of individual pores.
X-ray tomography irregular pore network model particle packings pore level convective drying
Y.J.Wang A.Kharaghani E.Tsotsas
Thermal Process Engineering,Otto von Guericke University Magdeburg P.O.Box 4102,39106 Magdeburg,Germany
国际会议
The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))
厦门
英文
1-8
2012-01-11（万方平台首次上网日期，不代表论文的发表时间）