چكيده به لاتين
In recent decades due to human consumption lifestyles, groundwater resources has been attacked by solute chemical which is increasing day by day. Unfortunately, as time moves forward, vast amounts of groundwater fresh water in the past few decades remained relatively immune from the impact of human activities, gradually decreased quality and quantity. When chemicals are often found excessive than standards in shape of solute or separate liquid phase in water, the use of water for domestic, municipal, industrial and agriculture will be risky. Any chemicals that endanger its use is considered as Contaminants (pollutants). The important issue now facing specialists and engineers, protect groundwater resources of the emission of pollutants, and reducing pollutants at the source is identified. Achieving the goal, it is targeted to simulate solute chemical transport in groundwater flow in unconfined aquifers. Considering the works, also the trajectories at the research, Cellular automata algorithm is choosed as the simulation framework. Despite of its short period of invention, cellular automata have been applied to a wide range of application, especially in civil engineering, due to its superiority at defining complexity in a simple manner, simplicity of coding, high speed of attaining solution and parallel computing, which result in better exploitation of modern computers high processing capability. As a result, a two dimensional macroscopic model of solute transport, in saturated unconfined aquifers, is developed. The model developed on the basis of Fick’s low. The proposed model is used to solve one and two dimentional benchmark examples of unsteady solute transport in steady groundwater flow. An attempt was made to opt for examples having exact analytical or numerical. Comparing the results, the model compatibility has been proven in terms of accuracy and speed of providing the solutions.
