Dynamics of osmotic fluid flow
Dynamics of osmotic fluid flow
复制标题
渗透液流动动力学
DOI:
10.1007/978-3-642-84619-9_44
复制
发表时间:
1992
影响因子:
1.4
通讯作者:
C. Peskin
中科院分区:
文献类型:
--
作者:
G. Oster;C. Peskin
The classical thermodynamic treatment of osmotic pressure is quite sufficient to compute most quantities of interest without reference to any molecular model (see, for example, Finkelstein, 1987). However, one’s intuition is always aided by molecular models, and a microscopic picture can be quite useful when thinking about osmotic flow in unfamiliar situations. Therefore, we offer here a surprisingly simple and intuitive molecular model for describing solvent flow driven by osmotically generated pressure gradients. We will show that osmotic pressure arises from the external force on solute particles which is transmitted to the solute by viscous drag. This simple picture enables us to propose a simulation method that can be used to compute the osmotic flows associated with quite complex situations arising in polymer and gel swelling.