Discrete Models for Real Processes

Simulating a piston motion by a gas-lattice model

Yu. G. Medvedev

Institute of Computational Mathematics and Mathematical Geophysics (Computing Center), Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract: In the paper, ways for defining the boundary conditions of the multiparticle lattice-gas FHP-MP model are discussed. Particular attention is paid to the unsteady boundary conditions. A method for moving walls in the model is suggested. It allows using obstacles which are walking while the simulation is run. Computer experiments with a piston movement in the cylinder were carried out. They showed that the simulated process corresponds qualitatively to the physical laws.

Keywords: cellular automaton, gas flow, unsteady boundary conditions, piston motion.

UDC: 004.007.519-7