An extended notion of Cellular Automata for surface flows modelling
نویسندگان
چکیده
Cellular Automata (CA) represent an alternative approach to differential equations to model and simulate complex fluid dynamical systems, whose evolution depends on the local interactions of their constituent parts. A new notion of CA was developed by our research group Empedocles. It permitted to improve significantly an empirical method for modelling macroscopic phenomena, concerning surface flows. This approach was applied to lava flows, to debris flows and to pyroclastic flows. This paper presents the CA extended notion together with the improved empirical method. Examples of simulations are exhibited and compared with the real events in order to show the method efficiency. Key-Words: Cellular automata, Modelling, Simulation, Fluid-dynamics, Lava, Debris flows, Pyroclastic flows
منابع مشابه
Development and Calibration of a Preliminary Cellular Automata Model for Snow Avalanches
Numerical modelling is a major challenge in the prevention of risks related to the occurrence of catastrophic phenomena. A Cellular Automata methodology was developed for modelling large scale (extended for kilometres) dangerous surface flows of different nature such as lava flows, pyroclastic flows, debris flows, rock avalanches, etc. This paper presents VALANCA, a first version of a Cellular ...
متن کاملModelling Surface Flows for Macroscopic Phenomena by Cellular Automata: An Application to Debris Flows
Cellular automata are good candidates for modelling and simulating complex dynamical systems, whose evolution depends on the local interactions of their constituent parts. Many macroscopic phenomena have such features, but their complexity involves sometime the interaction of heterogeneous processes, whose composition is not immediate in a cellular automaton frame. Furthermore the managing of f...
متن کاملCellular automata algorithm for simulation of surface flows in large plains
A hydrological model based in the cellular automata paradigm, capable to handle extended geographical domains discretized in a large number of cells is presented. The automata simulates the natural surface water flow by tracking local water stocks, book-keeping precipitation, infiltration, evapotranspiration, and intercellular flows. The flow resistance is represented with a relaxation local pa...
متن کاملModelling Combined Subaerial-Subaqueous Flow-Like Landslides by Cellular Automata
Macroscopic Cellular Automata characterize a methodological approach for modelling large scale (extended for kilometres) complex acentric phenomena, e.g. surface flows as lava flows, debris flows etc.. This paper concerns the extension of such a method in order to simulate combined subaerial-subaqueous flow-like landslides. The occurrence of heterogeneous interacting processes requires a more p...
متن کاملA novel vedic divider based crypto-hardware for nanocomputing paradigm: An extended perspective
Restoring and non-restoring divider has become widely applicability in the era of digital computing application due to its computation speed. In this paper, we have proposed the design of divider of different architecture for the computation of Vedic sutra based. The design of divider in the Vedic mode results in high computation throughput due to its replica architecture, where latency is mini...
متن کامل