We consider a two-dimensional spring-mass lattice with square symmetry in which each particle experiences a nonlinear onsite potential and nonlinear nearest-neighbour interactions. At equilibrium, the particles are equally spaced in both the horizontal and vertical directions and all springs are unextended.

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This study was intended to solve the problem that fuel evaporation and ignition process on the high-temperature hot surface are difficult to be predicted accurately. The rule of fuel evaporation and ignition delay that various with hot wall temperature have been obtained by utilizing the simulated experiment to study the evaporation and ignition process of aviation kerosene on horizontal hot wall. This study not only complements the related content of the fuel ignition mechanism on hot wall but also provides reference method for the fuel fire engineering practice.

As for the nucleus boiling pattern of the fuel on hot surface, the nucleus boiling mechanism, evaporation process and gas-liquid balance condition have been analyzed. Based on the model of Euler multiphase flow, mathematics model of the nucleus boiling process has been constituted. Furthermore, the nucleus boiling process has been simulated by FLUENT. And then, the study provides the theoretic foundation for the forecast of the process of fuel evaporation on hot surface through the comparative analysis between the theoretic calculation conclusion and the experiment.

This paper describes the horizontal deflection behaviour of a single particle in paramagnetic fluids under a high-gradient superconducting magnetic field. A glass box was designed to carry out experiments and test assumptions. It was found that the particles were deflected away from the magnet bore centre and particles with different density and susceptibility settled at a certain position on the container floor due to the combined forces of gravity and magneto-Archimedes as well as lateral buoyant (displacement) force. Matlab was chosen to simulate the movement of the particle in the magnetic fluid, the simulation results were in good accordance with experimental data. The results presented here, though is still very much in its infancy, which could potentially form the basis of a new approach to separating materials based on a combination of density and susceptibility.