Venturi vacuum controlled EGR system

Through the numerical simulation,the internal flow fields of jet pump are calculated under the condition of different throat lengths and the optimal sizes of throat are obtained.

通过数值仿真,分别计算了具有不同喉管长度的喷射泵内部流场,并经过分析确定了喷射泵的最优喉管尺寸,计算数据和试验数据对比非常接近,证明了数值仿真结果是合理的、可信的。

This paper presents ample experimental data which show that the improvement ofwater-jet pumps from short throats into long ones costs a little work and expense and the im-proved throat is efficient and energy-saving.

本文从理论方面阐述和用实验数据证实,长喉管射水抽气器效率高,能耗低,并指出改进短喉管射水抽气器工作量不很大,花费不多,见效快,效益显著。

Relationship between optimal length of throat pipe and area ratio was analyzed.

应用气液两相流动的双流体模型,数值模拟了射流器内臭氧—水的混合过程,得到了喉管内流场的参数分布,揭示了利用射流器进行臭氧—水混合的工作机理,为射流器结构参数优化设计和性能预测提供了有效手段。

Calculation of throat pipe length in CP type jet pump based on numerical simulation;

基于数值模拟的CP型喷射泵喉管长度计算