扭曲式波瓣排气引射器的数值模拟  

Numerical Study of Torsion Lobed Exhaust Ejector

作　　者：于云亮[1] 孙起超 邓玉林[1] 初曙光 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《船舶工程》2013年第1期26-28,45,共4页Ship Engineering

基　　金：中央高校基本科研业务费专项资金(HEUCF120306;HEUCF130306)

摘　　要：排气引射器是较好的通风冷却设备,在燃气轮机动力装置当中应用广泛。利用数值模拟方法对扭曲式与未扭曲式波瓣排气引射器进行了研究,得到了两种结构的内部流场分布情况和性能数据。数值模拟结果表明,扭曲式波瓣引射器在主次流混合效果与温度控制方面的性能优于未扭曲式,但在排气阻力损失方面处于劣势。研究结果为波瓣引射器在船舶动力装置当中的应用及其性能优化提供一定的参考。Exhaust ejector is widely used in gas turbine power plant as good ventilation cooling equipment. In the paper, exhaust ejectors with torsion and no torsion lobed have been studied using the method of numerical simulation. The internal flow fieM and performance data of two kinds of structures have been gained. The results of numerical simulation show that the mixing and temperature controlling effects in torsion lobe ejector are better than it is in no torsion form. But it has a deficiency in exhaust pressure loss. The research results can provide some reference for lobed ejector used in ship power device and optimization of its performance.

关 键 词：波瓣引射器 扭曲式 引射系数 数值模拟 

分 类 号：U664.86[交通运输工程—船舶及航道工程]