| 调节级局部进汽对下游动叶气动负荷影响的数值研究 |
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| 引用本文： | 刘子亘,曹世裕,韩万金. 调节级局部进汽对下游动叶气动负荷影响的数值研究[J]. 汽轮机技术, 2010, 52(1) |
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| 作者姓名： | 刘子亘 曹世裕 韩万金 |
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| 作者单位： | 1. 中国船舶重工集团第703研究所,哈尔滨,150036
2. 哈尔滨工业大学,能源科学与工程学院,哈尔滨,150001 |
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| 摘 要： | 基于舰船用主汽轮机多工况、变转速、变参数的特点,应用商业软件CFX对具有3组喷嘴的复速级叶栅进行全周数值模拟,着重分析了调节级局部进汽对下游动叶气动负荷的影响,数值模拟结果表明,各个喷嘴组边界壁面的存在对流动具有较大影响,同时喷嘴叶栅Ⅰ的叶片型线的不同导致边界畸变对流动的影响更敏感。动叶叶栅的压力分布特点表明了尾迹低速区和主流低压区是形成动叶流动参数不稳定的主要因素,从而形成了叶栅内特有的非定常流动现象。
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| 关 键 词： | 局部进气 调节级 复速级 船舰汽轮机 |
Numerical Simulation of Effect of Adjust Stage Local Intake on Aerodynamic Load of Downstream Rotor Blade |
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| LIU Zi-gen,CAO Shi-yu,HAN Wan-jin. Numerical Simulation of Effect of Adjust Stage Local Intake on Aerodynamic Load of Downstream Rotor Blade[J]. Turbine Technology, 2010, 52(1) |
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| Authors: | LIU Zi-gen CAO Shi-yu HAN Wan-jin |
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| Affiliation: | LIU+Zi-gen1,CAO+Shi-yu1,HAN+Wan-jin2+(1+Harbin+No.703+Research+Institute,Harbin,150036,China,2+School+of+Energy+Science+,+Engineering,Harbin+Institute+of+Technology,Harbin+150001,China) |
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| Abstract: | The marine steam turbine have the characteristics of many work conditions,variable rotate speed and variable parameter.The commercial software CFX is applied to simulate the double-velocity stage turbine with three group nozzle stages.The paper analyzed the effect of adjust stage local intake for aerodynamic load of downstream rotor blade.The numerical simulation results show that the boundary wall of nozzle stage has a great effect on the flow in the turbine and the nozzle stage I different blade profile h... |
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| Keywords: | local intake adjust stage double-velocity stage marine steam turbine |
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