蒸发式火焰稳定器冷态流场计算

Numerical prediction of cold flow field behind a vapor flameholder

采用k-ε模型对二元管道中的蒸发式火焰稳定器冷态流场进行了数值模拟,研究了稳定器几何参数对回流区结构的影响,结果表明槽宽是影响回流区特性的主要因素,槽宽增大,回流区增长,但总压损失增大,而且稳定器边缘速度增大,不利于火焰稳定,所以应选择合适的槽宽使稳定器性能最佳。

A numerical prediction of the cold flow field behind a vapor flameholder in two-dimension duct was completed by using a k-ε model. It is found that the width of the base was the main factor, and performance of the flameholder largerly depended on proper width of the base.