【摘要】 基于SIMPLE算法的压力校正思想,提出了一种新的改进算法.设计了先对温度进行假设,再对其迭代求解的计算流程,并从理想气体状态方程出发,推导出了密度校正方程.对半球形可燃气云爆燃进行了计算,得到了收敛性能良好的计算结果.该改进算法可以应用于可燃气云爆燃的计算中.更多还原

【Abstract】 Based on the pressure-correction principle of SIMPLE (semi-implicit method for pressure linked equations) algorithm, a new improved algorithm has been proposed. In the improved algorithm, temperature field was firstly assumed, and iteration-correction was used subsequently. In addition, a density corrective equation was applied at the base of state equation of perfect gas. By calculating semi-spherical flammable cloud deflagration, solutions with better convergence characteristics have been obtained. It is shown that the new algorithm can be used in the numerical computation of flammable gas cloud deflagration.更多还原