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 subchain, 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.
A graphical tool for the simulation of supply chains using fluid dynamic models
CUTOLO, ALFREDO;DE NICOLA, CARMINE;MANZO, Rosanna
2008-01-01
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 subchain, 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
