Volume No. 11 Issue No.: 3 Page No.: 595-606 January-March 2017
NUMERICAL SIMULATION OF POLLUTANT DIFFUSION IN 1D AND 2D ENVIRONMENTS USING SPH METHOD
Janfeshan Araghi H.*, Abbaspour M., Javid A.H.1 and Mirbagheri S. A.2
1. Department of Environment and Energy, Science and Research Branch, Islamic Azad University,Tehran (IRAN)
2. Department of Civil and Environmental Engineering, K. N. Toosi University of Technology,Tehran (IRAN)
Received on : December 12, 2016
In the present study was attempted to solve the diffusion equation in 1D and 2D spaces using of smoothed particle hydrodynamic (SPH) method. For assuring the accuracy and veracity of the modeling results, the modeling output results were compared with the analytical solution to determine the accuracy of SPH method. The maximum difference between numerical simulation and analytical solution was less than 0.1%, respectively in 1D and 2D. Also pollution concentration was reported in specific point of environment. The results of the simulations showed that SPH method is able to model and predict the diffusion of pollutant in large-scale environment. Due to the Lagrangian and mesh-free particle method, this model can be used to determine the duration of pollution reaches in a specific place of the environment and variation of pollutant concentration changes in this place.
Keywords : Diffusion equation, Mesh-free particle method, Smooth particle hydrodynamic method, Lagrangian method