石油化工高等学校学报2024，Vol.37Issue(2)：73-80,8.DOI:10.12422/j.issn.1006-396X.2024.02.010
多孔生物弹性材料的渗流数值模拟
Numerical Simulation of Seepage Flow in Porous Bioelastic Materials
摘要
Abstract
The Biological seepage studies the seepage of biofluids in living organisms and fluids containing microorganisms in non-biological porous media.The mass transfer diffusion osmosis phenomenon of a porous bioelastomer material,poly(glycidyl sebacate)(PGS),implanted into human soft tissues was simulated.The pore structure of the PGS material was characterised by N2 adsorption-desorption and the scaffold model with different pore numbers and pore diameters was designed using the multi-physics field simulation software-COMSOL to investigate the effects of pore and pore diameter parameters on blood osmosis when the pore size was constant.COMSOL was used to design the adapted PGS stent models,numerically simulate the characteristics of the blood flow when blood flowed through the PGS stent,and analyse the kinetic viscosity and the shear rate of the blood field with the theory of fluid dynamics.Comparative analyses of seepage pressure and diffusion at different blood inlet velocities were carried out.The results show that the PGS material is a material that tends to be mesoporous.When the blood flows inside the porous scaffold,the kinetic viscosity varies with the shear rate,indicating that the blood seepage inside the scaffold is a kind of non-Newtonian fluid seepage.The diffusion speed of the blood inside the porous scaffold is different under different inlet velocities and the larger the inlet velocity is,the higher the pressure,and the faster the mass transfer diffusion speed will be.关键词
生物渗流/多孔生物弹性体/传质扩散/非牛顿流体/COMSOL数值模拟Key words
Bio-seepage/Porous bioelastomers/Mass transfer diffusion/Non-Newtonian fluids/COMSOL numerical simulation分类
化学工程引用本文复制引用
陈妙超,杨盛,郭凯旋,冯金宝,玉姣..多孔生物弹性材料的渗流数值模拟[J].石油化工高等学校学报,2024,37(2):73-80,8.基金项目
国家自然科学基金资助项目(12074160). （12074160）
