| 扭曲式波瓣排气引射器的数值模拟 |
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| 引用本文： | 于云亮,孙起超,邓玉林,初曙光.扭曲式波瓣排气引射器的数值模拟[J].船舶工程,2013,35(1):26-28. |
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| 作者姓名： | 于云亮 孙起超 邓玉林 初曙光 |
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| 作者单位： | 哈尔滨工程大学 动力与能源工程学院 哈尔滨,哈尔滨工程大学 动力与能源工程学院 哈尔滨,哈尔滨工程大学 动力与能源工程学院 哈尔滨,哈尔滨工程大学 动力与能源工程学院 哈尔滨 |
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| 基金项目： | 中央高校基本科研业务费专项资金(HEUCF120306,HEUCF130306) |
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| 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。
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| 关 键 词： | 波瓣引射器 扭曲式 引射系数 数值模拟 |
| 收稿时间： | 5/10/2012 2:20:48 PM |
| 修稿时间： | 8/22/2012 7:44:41 PM |
Numerical Study of Twisted Lobed Exhaust ejector |
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| YU Yun-liangsub_ssub_e,SUN Qi-chaosub_ssub_e,DENG Yulinsub_ssub_e and CHU Shu-guangsub_ssub_e.Numerical Study of Twisted Lobed Exhaust ejector[J].Ship Engineering,2013,35(1):26-28. |
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| Authors: | YU Yun-liang[sub_s][sub_e] SUN Qi-chao[sub_s][sub_e] DENG Yulin[sub_s][sub_e] and CHU Shu-guang[sub_s][sub_e] |
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| Institution: | Harbin Engineering University,Harbin Engineering University,Harbin Engineering University,Harbin Engineering University |
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| Abstract: | Exhaust ejector is used widely in gas turbine power plant as good ventilation cooling equipment. In this paper, a twisted lobed exhaust ejector has been studied by using the method of numerical simulation. And the velocity field, temperature field and ejector coefficient of ejector also has been investigated. Simulation results showed that obvious circumferential velocity component existed in the twisted lobed structure, which effectively strengthen entrainment of secondary flow. This has enhanced the performance of entrainment, shortened the axial length of mixing tube and reduced exhaust temperature. |
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| Keywords: | Twisted flow Lobe ejector Ejector coefficient Circumferential Velocity |
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