NUMERICAL INVESTIGATION OF WORN LABYRINTH SEALS

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外文摘要：The objective of this study was to develop a Computational Fluid Dynamics (CFD) based methodology to obtain the flow characteristics of worn and unworn labyrinth seals which will be applicable over a wide range of seal geometries。 In this paper， we present a process to analyze worn and unworn seals with honeycomb lands using the CFX suite of software。 Honeycomb structure poses an additional challenge due to disparate length scales。 This was addressed by using separate meshes for the honeycomb and the seal tooth and by connecting them with a generalized grid interface in CFX。 The challenges involved in modeling worn seals and an approach for quality meshing of the same was discussed。 Comparisons were made with the test data from seals with unworn honeycomb lands。 The leakages for the worn seals were also analyzed。

外文关键词：

labyrinth sealunworn and worn honeycomb landsleakage

作者：

Hasham H Chougule、Dhinagaran Ramchandran、Douglas Ramerth、Ramnath Kandala

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作者单位：

Honeywell Technology Solutions Lab, Bangalore, India

会议名称：

ASME(American Society of Mechanical Engineers) Turbo Expo vol.3 pt.B

会议地点：

Reno-Tahoe,NV(US)

会议母体文献：

ASME Turbo Expo 2006: Power for Land, Sea, and Air vol.3 pt.B Heat Transfer: General Interest Transition Internal Air and Seals

页码：

1483-1493

出版时间：

2005