Various approaches can be used to simulate groundwater flow in karst systems, including equivalent porous media distributed parameter, lumped parameter, and dual porosity approaches, as well as discrete fracture or conduit approaches. The purpose of this study was to evaluate two different equivalent porous media approaches: lumped and distributed parameter, for simulating regional groundwater ...

In this paper, the authors present a 0D fluid dynamic model of vane pump used to refill tanks with fuel. The is entirely developed in OpenModelica environment, where have created specific libraries elements suitable for physical modelling power components and systems. Among different approaches, zero-dimension (0D) fluid-dynamic positive displacement machines study many aspects as: instantaneou...

Anderson and Bowser [1986], hereafter referred to as AB, presented a very interesting paper on the study of the role of groundwater in delaying lake acidification i Wisconsin. By considering the input/output of hydrogen ion with respect o the aquifer, including nonconservative transport through the use of the retardation factor, the effect of a delay in the arrival of acid to the lake is demons...