3D modeling of water transfers in soil and roots systems

This work presents a three dimensional model simulating water transfers in soil and root systems (figures will be 2D for a better readability). Simulations are usually performed using a layer discretisation of soil space ([12]) often monodimensional or a global fluxes budget ([15]). Some experimental models simulate individual roots ([2]) but are huge consumers of computer ressources. Our approach considers the architecture of the main roots. Fine roots are averaged in absorptive volumes related to the main roots. This representation helps to simulate heterogeneousness like those caused by irrigation, rain water redistribution or culture associations.