Simulación de gases en cámaras de almacenamiento de fruta

Simulation of Gases in Fruit Cold Storage Chambers: Nowadays there is an increasing use of low Oxygen (LO) and ultra low Oxygen (ULO) atmospheres for long term cold storage of fruits. Some physiological disorders associated with these postharvest technologies point to the presence of small spatial gradients in gas concentration as the major cause. However, it is extremely difficult to perform experimental tests measuring spatial gas gradients with sufficient resolution. In this study a spatiotemporal gas simulation software has been developed as a decision tool with the aim to evaluate various stowage and fruit conditions, as well as containers design

Lattice gas and lattice Boltzman for spatio-temporal simulation of gases in fruit storage chambers

The benefit of controlled and modified atmospheres for extending the storage life of fruits is world wide accepted. However, there are secondary effects such as the incidence of anaerobic respiration or the off-favour occurrence which are not sufficiently known and thus controlled. This study approaches the knowledge of those secondary effects by developing a spatio temporal model gathering fluid flow phenomenon and physic and physiological processes. The lattice Boltzmann model used as framework for mimicking the fluid flow shows to be a very flexible tool which reproduces complex macroscopic behaviours on a down up strategy better than Lattice Gas Cellular Automata (LGCA

An explicit finite differences scheme over hexagonal tessellation

AbstractWe introduce a new numerical method inspired in the cellular automata methodology to study the transmission of waves in two-dimensional solids. The stability of the second-order method is investigated and compared with that of a classical finite differences method for both wave and elastic equations