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- W2359220105 abstract "This paper reports a numerical study on leakage flow with same blade tip clearances of conventional twisted and positive curve-twisted blade in high-pressure stage of a steam turbine.The k-e turbulence model is adopted,and SIMPLEC arithmetic is used.The results shows that comparing with the conventional twisted blade,the positive curve-twisted blade improves the lowest pressure of steam flow in blade tip area and reduces the crosswise pressure gradient between pressure side and suction side.The influence scope and disturbance on channel flow of leakage vortex formed near suction side of the positive curve-twisted blade of steam flow is weaker than the conventional twisted blade.C-type pressure distribution which is positive radial pressure gradient in blade tip and negative radial pressure gradient in blade root is formed on pressure side and suction side of the positive curve-twisted blade of steam flow,and total pressure loss is reduced near the blade upper.The positive curve-twisted blade reduces leakage loss of tip clearance and mixing loss in the cascade channel." @default.
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- W2359220105 date "2012-01-01" @default.
- W2359220105 modified "2023-09-26" @default.
- W2359220105 title "Numerical Simulation of the Influence of Blade Positive Curving on Tip Leakage Flow in Steam Turbines" @default.
- W2359220105 hasPublicationYear "2012" @default.
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