肺毛细血管与组织间物质交换的双重介质模型

本文在文献[4]的基础上利用双重孔隙介质模型研究了肺毛细血管与组织间的物质交换。利用小参数展开的分析方法和数值计算方法求解了非线性的控制方程。通过比较说明在一般的生理条件下小参数展开法所得的解已能充分描述肺毛细血管和组织间的物质交换状况。最后文中还利用所得解分析了肺水肿形成的机理。     

THE STOKES FLOW OF THE ROTATING DOUBLE SPHERES AND MULTIPLE SPHERES

In this paper the expressions for a kind of new rotlets in Stokes flow are derived. Bymeans of superposition of this new rotlets, the drag moment for rotating double spheres andmultiple spheres along the smae axis are presented. It has been demonstrated that dragmoment for each sphere is the linear function of its angular velocity.     

THE DOUBLE POROSITY MODEL FOR MASS TRANSFER BETWEEN CAPILLARIES AND TISSUES IN LUNG MICROCIRCULATION

This paper proposes a double porosity model to deal with the mass transfer between capillaries and tissues in the lung microcirculation on the basis of Ref. [4]. Utilizing the analytic method of small parameter expansion and the numerical method, the nonlinear governing equations are solved. Comparison shows that the small parameter solution is accurate enough to illustrate the mass exchange between the lung capillary and tissues. Finally the results are used to discuss the mechanism of formation of lung edema.     

肺微循环内血液流动的连续介质整体模型

本文提出一种一维连续介质整体模型和相应的方程组,将之应用于肺循环內的血液流动问题,得到了封闭形式的分析解。分析表明,本文所得的结果与冯元桢采用片流理论所得的结果完全一致。     

The stokes flow of the rotating double spheres and multiple spheres

In this paper the expressions for a kind of new rotlets in Stokes flow are derived. By means of superposition of this new rotlets, the drag moment for rotating double spheres and multiple spheres along the smae axis are presented. It has been demonstrated that drag moment for each sphere is the linear function of its angular velocity.     

旋转双球和多球的Stokes流动

本文首先导出一类新旋转子的表达式.利用该旋转子的迭加,得到了双球和多球同轴旋转时所受的阻力矩,并证明了阻力矩是各球旋转角速度线性函数的结论.