2008
EMSS 2008 Proceeding
A graphical tool for the simulation of supply chains using fluid dynamic models
Authors: Alfredo Cutolo, Carmine De Nicola, Rosanna Manzo
Abstract
This paper presents a numerical tool for the simulation of supply chains based on two different fluid dynamic models. One is based on a mixed continuum-discrete model, it means that the load dynamics are solved in a continuous way on the arcs, and at the nodes imposing the conservation of the goods density, but not of the processing rate. In fact, each arch is modelled by a system of two equations a conservation law for the goods density, and an evolution equation for the productive capacity. According to the other model, the load dynamics are described by a conservation law, with constant processing rate, inside each supply sub- chain, and an entering queue for exceeding parts. The dynamics at a node are solved considering an ode for the queue. The realized tool allows to reproduce the state of the densities on arcs through coloured animations.
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