New Guidelines for the Preliminary Design and Performance Prediction of Axial-Flow Turbines
New Guidelines for the Preliminary Design and Performance Prediction of Axial-Flow Turbines
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DOI：
10.1243/pime_proc_1987_201_035_02
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发表时间：
1987-11
期刊：
影响因子：
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通讯作者：
D. G. Wilson
中科院分区：
文献类型：
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作者：
D. G. Wilson
其中包括性能图表，可以针对轴流式涡轮机中的指定级负载，对反作用力和流量系数（或叶排出口角）进行适当的初始选择（即，在通过计算流体动力学方法进行最终设计之前）。讨论并绘制了矢量图中的径向变化，该变化导致在不同轮毂-护罩直径比和载荷下可接受的反应径向分布。由此，选择环形截面（例如恒定外径或内径）的设计自由度范围被绘制为涡轮压力比的函数。还开发了一种关联和添加损耗的方法，该方法应该比以前使用的一些方法更加一致，并且在热力学上更加严格。
Performance charts are included that enable appropriate initial choices (that is, before final design by methods of computational fluid dynamics) to be made of reaction and flow coefficient (or blade row outlet angle) for specified stage loadings in axial-flow turbines. The radial variation in vector diagrams that leads to acceptable radial distributions of reaction at various hub-shroud diameter ratios and loadings are discussed and plotted. From these, the ranges of design freedom to choose the annulus cross-section (for example constant o.d. or i.d.) are plotted as a function of turbine pressure ratio. Also developed is a method of correlating and adding losses that should be more consistent and thermodynamically more rigorous than some previously used methods.