具有最小压力损失的燃气轮机出口装置几何形状的选择

N. Ponomarev
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引用次数: 0

摘要

研究对象和目的。本文讨论了由轴向径向扩压器和袖珍蜗壳组成的燃气轮机出口装置。该研究的目的是选择出口装置的几何形状,以提供最小的总压力损失。主题和方法。燃气轮机出口单元模型的实验结果。SolidWorks软件包中带有Flow模拟扩展的总压力损失计算。通过回归分析得到校正系数。利用实验规划理论得到了总压损失最小的出口单元几何形状。主要结果。该研究对SolidWorks软件包中获得的计算结果进行了修正,并扩展了Flow仿真。成功地找到了出口装置的几何形状,使总压力损失最小。扩散器径向部分支柱位置对压力损失的影响已经量化。结论这项研究能够在总压损失最小的情况下早期识别出口单元的几何形状,因此对实际燃气轮机设计具有价值。
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Selection of gas turbine exit unit geometry with minimum pressure losses
Object and purpose of research. This paper discusses gas turbine exit unit consisting of axial-radial diffusor and pockettype volute. The purpose of the study was to select the exit unit geometry that would offer minimum losses of total pressure. Subject matter and methods. Experimental results obtained for the models of gas turbine exit units. Calculation of total pressure losses in SolidWorks package with Flow simulation extension. Correction coefficients were obtained through regression analysis. The exit unit geometry offering minimum losses of total pressure was obtained using the theory of experiment planning. Main results. The study yielded correction coefficients to the calculation results obtained in SolidWorks package with Flow simulation extension. Exit unit geometry offering minimum losses of total pressure has been successfully found. The effect of strut location in the radial part of diffusor in terms of pressure losses has been quantified. Conclusion. This study enables early identification of exit unit geometry with minimum total pressure losses, so it is valuable for practical gas turbine design.
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