Numerical solution of the advectionedispersion equation, used to evaluate transport of solutes in porous media, requires discretization schemes for space and time stepping. We examine use of quadratic upstream interpolation schemes QUICK, QUICKEST, and the total variation diminution scheme ULTIMATE, and compare these with UPSTREAM and CENTRAL schemes in the HYDRUS-1D model. Results for purely c...

Liquid spreading on a soluble substrate is known as dissolutive wetting, common phenomenon in the medical and industrial fields. However, dynamic process of wetting not fully understood due to complex transport mass momentum. In this article, we present hydrodynamic model that accounts for both Marangoni buoyancy effects analyze interface shape, flow, solute wetting. Based our theoretical analy...

A simple and reproducible method has been developed for following fluid transport by an in vitro preparation of mammalian gall bladder, based upon weighing the organ at 5 minute intervals. Both guinea pig and rabbit gall bladders transport NaCl and water in isotonic proportions from lumen to serosa. In the rabbit bicarbonate stimulates transport, but there is no need for exogenous glucose. The ...