TY - JOUR TI - REACTION-DIFFUSION EQUATION FOR CONTAMINANT ION FLOW USING POINT-SOURCE APPROXIMATION AU - Shi Xiang-Chao AU - Cai Wu-Qiang AU - Meng Ying-Feng AU - Li Gao JN - Thermal Science PY - 2015 VL - 19 IS - 4 SP - 1452 EP - 1454 PT - Article AB - We developed a new model for fluid movement around the wellbore by introducing a Dirac function, which simplifies a water-injection well as a point source. The effect of porosity on the reaction and diffusion of contaminant ions is also taken into account in the model, making it more reliable in theoretical prediction.