July 1-6, 2007
Fouling caused by calcium phosphate upon heating is basically a crystallization/precipitation process, which starts with the formation of stable clusters of ions or molecules in a process called nucleation that occurs either in the bulk liquid or at the surface. The cellular automata are useful tools to model complex systems of the universe. They could be considered as a good alternative to differential equations and have been used to model many physical/biological systems. In this preliminary work, a two dimensional space was considered where the cellular automata lattice was represented as a grid of squares, with each square representing a single automaton cell. Several situations were simulated, representing the growth of the deposit on stainless steel materials for different surface energies. The results of the simulations were compared with experimental data obtained in the laboratory.
F. G. Martins, T. Campos, R. Rosmaninho, and L. F. Melo, "SIMULATION OF CALCIUM PHOSPHATE DEPOSITION ON STAINLESS STEEL SURFACES: A NEW APPROACH BASED ON CELLULAR AUTOMATA" in "Heat Exchanger Fouling and Cleaning VII", Hans Müller-Steinhagen, Institute of Technical Thermodynamics, German Aerospace Centre (DLR) and Institute for Thermodynamics and Thermal Engineering, University of Stuttgart, Germany; M. Reza Malayeri, University of Stuttgart, Germany; A. Paul Watkinson, The University of British Columbia, Canada Eds, ECI Symposium Series, (2007). http://dc.engconfintl.org/heatexchanger2007/23