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基于遗传算法的燃气轮机叶片内部柱肋蒸汽冷却通道的优化分析 被引量:1
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作者 廖高良 孙泽秦 张峰 《热能动力工程》 CAS CSCD 北大核心 2022年第8期48-56,共9页
针对叶片尾缘内部柱肋冷却方式进行数值仿真和优化分析。采用CFX软件进行数值仿真计算,建立圆形柱肋、水滴形柱肋和正方形柱肋3种柱肋形状下,不同柱肋间距的矩形通道模型,验证数值模型的正确性以及网格无关性。分析了顺排和叉排的排列... 针对叶片尾缘内部柱肋冷却方式进行数值仿真和优化分析。采用CFX软件进行数值仿真计算,建立圆形柱肋、水滴形柱肋和正方形柱肋3种柱肋形状下,不同柱肋间距的矩形通道模型,验证数值模型的正确性以及网格无关性。分析了顺排和叉排的排列方式下,柱肋形状和柱肋间距对下底面努塞尔数以及整个通道内压力损失的影响,最后通过MATLAB的遗传算法对仿真结果进行优化。研究表明:柱肋模型中,横向和纵向柱肋间距最小时,换热效果最佳,压力损失最大;在顺排和叉排中,正方形柱肋对通道的换热强度的提升效果最明显,圆形柱肋提升效果最小。 展开更多
关键词 柱肋冷却 流动换热分析 模拟仿真 遗传算法
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Flow Structure and Heat Exchange Analysis in Internal Cooling Channel of Gas Turbine Blade 被引量:3
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作者 Ryszard Szwaba Piotr Kaczynski +1 位作者 Piotr Doerffer Janusz Telega 《Journal of Thermal Science》 SCIE EI CAS CSCD 2016年第4期336-341,共6页
This paper presents the study of the flow structure and heat transfer,and also their correlations on the four walls of a radial cooling passage model of a gas turbine blade.The investigations focus on heat transfer an... This paper presents the study of the flow structure and heat transfer,and also their correlations on the four walls of a radial cooling passage model of a gas turbine blade.The investigations focus on heat transfer and aerodynamic measurements in the channel,which is an accurate representation of the configuration used in aeroengines.Correlations for the heat transfer coefficient and the pressure drop used in the design of radial cooling passages are often developed from simplified models.It is important to note that real engine passages do not have perfect rectangular cross sections,but include coiner fillet,ribs with fillet radii and special orientation.Therefore,this work provides detailed fluid flow and heat transfer data for a model of radial cooling geometry which possesses very realistic features. 展开更多
关键词 cooling internal blade channels heat exchange transient liquid crystal method
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Convective heat transfer analysis for MHD peristaltic flow in an asymmetric channel 被引量:1
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作者 M. Awais S. Farooq +2 位作者 H. Yasmin T. Hayatt A. Alsaedi 《International Journal of Biomathematics》 2014年第3期1-15,共15页
Magnetohydrodynamic peristaltic flow of Jeffery fluid in an asymmetric channel is addressed. The channel walls satisfy the convective conditions. Asymmetry here is con- sidered due to wave trains of different amplitud... Magnetohydrodynamic peristaltic flow of Jeffery fluid in an asymmetric channel is addressed. The channel walls satisfy the convective conditions. Asymmetry here is con- sidered due to wave trains of different amplitudes and phases. Solutions for the velocity, temperature and pressure gradient are obtained using long wavelength approximation. Plots reflecting the impact of various parameters of interest are shown and examined. 展开更多
关键词 Jeffery fluid convective boundary conditions pumping and trapping.
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