CAJ | 학술논문

采用压汞试验获得实际多孔介质的微观结构参数.以冻干马铃薯为例计算了孔隙分形维数,结果表明冻干马铃薯结构具有显著的分形特性.运用位似变换理论、分形理论、Voronoi图以及马铃薯的特征参数等,构建出与马铃薯结构参数相对应的二维分形孔道网络模型.构建的网络模型考虑了影响多孔介质干燥的孔道微细结构特征,模型参数能够很好地反映多孔物料的微观结构.且获得了合理的分形维数.
채용압홍시험획득실제다공개질적미관결구삼수.이동간마령서위례계산료공극분형유수,결과표명동간마령서결구구유현저적분형특성.운용위사변환이론、분형이론、Voronoi도이급마령서적특정삼수등,구건출여마령서결구삼수상대응적이유분형공도망락모형.구건적망락모형고필료영향다공개질간조적공도미세결구특정,모형삼수능구흔호지반영다공물료적미관결구.차획득료합리적분형유수.
The micro-structure parameters of the actual porous media through mercury intrusion experiment were obtained, and the fractal dimension of pore distribution was calculated, taking frozen-dried potato for example. The result showed that the pores in the freeze-dried potato presented the remarkably fractal properties. A two-dimensional fractal pore network model of porous media was constructed based on the theories of homothetic reduction, fractal geometry, Voronoi diagram, along with the structural parameter of potato. Since pore microstructure characteristic was considered into the model, the parameter of network model can well reflect the microstructure of porous materials, and the reasonable fractal dimension was obtained.