Computed Effect of Varying Tip Clearance and Axial Gap on Gas Turbine Stage Performance Part (I): (Steady Flow)

Document Type : Original Article

Authors

Mechanical Power Engineering Department, Zagazig University., Egypt

Abstract

turbine, imprecise axial gap and tip clearance are two significant sources of
inefficiency. This work investigates the effect of change in parameters such as
axial gap and tip clearance on axial flow gas turbine used in power generation.
Different combinations of axial gap and tip clearance have been tested to analyze
the performance of the turbine. It is revealed that the axial gap of 18.5% of axial
chord and 2.4% tip clearance of blade height is the optimum set value for the
maximum performance

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