recirculation zone

The biggest value of the recirculation zone length of flow behind reversed tainter valve was attained, then with opening degree increases the recirculation zone length reduces gradually;

反弧门后水流回流区长度在0.2开度达到最大值，然后随开度的增大回流区长度逐渐减少；

According to the modeling result, the correlations between the main recirculation zone length and the position of side wall jet are obtained at the ratio of side wall jet velocity/ sudden-expansion inlet velocity being equal to 2.0.

根据计算结果，拟合出了当侧壁射流速度与突扩通道入口平均流速之比等于2.0时，主回流区长度与侧壁射流位置的关系式。

The heat recirculation zone tube's outer wall extends with the flow rate of the mixture.

外壁上的热回流区域随着气流总流量增加而延长.

A wake flow with relatively lower pressure and recirculation zone exists on the lee side of the injector.

在喷口后的背风区，存在具有低压和回流区的尾迹。