Numerical Simulation of a Leaking Buried Pipe in Semi-infinite Saturated Porous Medium

Numerical simulation for a leaking species migration from a heat source buried into a fluid saturated porous medium is demonstrated. Heat and mass transfer from a source buried into a saturated porous medium are relevant to nuclear waste disposal and crude oil transport. Here, the porous medium surrounding the source is heated/polluted and the resulting temperature/concentration difference drives the flow. For simulating a buried pipe in porous media we used a 2D geometry, and the governing equations base on Dupuit-Forchheimer model solved numerically by finitedifference method. A parametric study is carried out for different Peclet and Rayleigh numbers and location of the Leaking hole. Two locations of leakage are considered in this study. The results show that the leaking hole place has a significant effect on migration of the Third component into the porous medium.

Keywords:

Porous media , buried pipe , Heat and MassTransfer , Buoyancy , Finite difference