Improving the Efficiency of the Trent 500 HP Turbine Using Non-Axisymmetric End Walls: Part 1 — Turbine Design
Improving the Efficiency of the Trent 500 HP Turbine Using Non-Axisymmetric End Walls: Part 1 — Turbine Design
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DOI：
10.1115/2001-gt-0444
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发表时间：
2001-06
影响因子：
8.3
通讯作者：
G. Brennan;N. Harvey;Martin George Rose;N. Fomison;M. Taylor
中科院分区：
文献类型：
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作者：
G. Brennan;N. Harvey;Martin George Rose;N. Fomison;M. Taylor
本文介绍了利用非轴对称端壁对Rolls-Royce Trent 500发动机的高压涡轮机进行的重新设计。原始基准涡轮机使用传统的轴对称端壁，而两种设计的叶片和（带罩）转子翼型在名义上是相同的。达勒姆大学以前对大规模低速线性叶栅的研究（见哈特兰等人[1]）已经证明，使用非轴对称端壁可以显著降低涡轮机二次损失-约三分之一。本文介绍了如何从本研究的结果中推导出一种方法，并将其应用于单级Trent 500 HP涡轮机（模型试验台）的设计。特别地，详细讨论了Harvey等人[2]中描述的用于这些端壁形状的参数化定义的新线性设计系统的应用。
This paper describes the redesign of the HP turbine of the Rolls-Royce Trent 500 engine, making use of non-axisymmetric end walls. The original, datum turbine used conventional axisymmetric end walls, while the vane and (shrouded) rotor aerofoil profiles were nominally the same for the two designs. Previous research on the large scale, low speed linear cascade at Durham University, see Hartland et al [1], had already demonstrated significant potential for reducing turbine secondary losses using non-axisymmetric end walls - by about one third. This paper shows how a methodology was derived from the results of this research and applied to the design of the single stage Trent 500 HP turbine (model rig). In particular the application of a new linear design system for the parametric definition of these end wall shapes, described in Harvey et al [2], is discussed in detail.Copyright © 2001 by ASME