Method for reducing grid dependency in spray and particle behavior simulation

摘要

The lattice dependence reduction method in the simulation of spray and particle behavior of the present invention analyzes the fuel particles from the Lagrange's point through the mass conservation and momentum conservation equations of the gas flow field, and the surrounding gas flow field has the Euler perspective ( An analysis step, interpreted as Euler's point); And a correction step of correcting the momentum conservation equation through an EMC model (Enhanced Momentum Coupling Model) in order to reduce the lattice dependence in the momentum transfer of the analysis step. According to the present invention, even when using a lattice that is relatively coarse than a dense lattice, it is possible not only to obtain an accurate analysis result corresponding to the case of using a dense grating, but also to reduce computer memory usage by using a coarse grating. The calculation time can be significantly shortened, which can improve the efficiency of the calculation.