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Durham University

Department of Engineering

Staff Profile

Publication details for Professor Simon Hogg

Burton, Zoe, Ingram, Grant & Hogg, Simon (2013), A Generic Steam Turbine Exhaust Diffuser with Tip Leakage Modelling and Non-Uniform Hood Outlet, The 10th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics ETC 10. Lappeenranta, Finland, Lappeenranta.

Author(s) from Durham

Abstract

This paper advances the work of Burton et al. (2012) to highlight the significance of the last
stage blade tip leakage jet on the flow structure in the low pressure (LP) steam turbine
exhaust hood, widely regarded as being significant in other published research. The flow
structure in the exhaust hood is distinctly asymmetric when the leakage jet is included due to
the increased swirl. This paper offers the new contribution of the effect of the condenser on
the flow structure within the exhaust hood. It has been shown that the pressure gradient at
the condenser inlet due to the heating of the cooling water reduces the asymmetry caused by
the tip leakage jet. Improvements have been made to Durham University’s public domain LP
exhaust diffuser with accompanying last stage blades geometry to include the flare of the casing.

Notes

Conference dates: 15-19 April 2013