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- W2378003724 abstract "By adopting a three-dimensional periodical model,a study was conducted of the flow and heat transfer characteristics of a labyrinth seal with a transpiration-type smooth surface.As a result,obtained was the variation relationship of the windage-heat coefficient of the labyrinth seal with circumferential mach numbers under two different flow rates with and without an inlet pre-swirl.The relationship in question was compared with that obtained from experimental values,empirical formulae and two-dimensional axially-symmetric models.It has been found that the above model can simulate relatively well the heat transfer characteristics of the labyrinth seal incorporating an inlet pre-swirl.Under a same flow rate and same inlet pre-swirl ratio,the windage heat coefficient will increase with an increase of rotating speed.At a same flow rate and rotating speed,the imposition of an inlet pre-swirl can significantly lower the total temperature rise in the labyrinth seal and reduce the windage heat coefficient,but will not influence the velocity field on a meridian plane.Under the condition of a same rotating speed and inlet pre-swirl ratio,an increase of the flow rate will lead to a decrease of the windage heat coefficient and an increase of the velocity on a meridian plane.The structure of the flow field,however,will not change." @default.
- W2378003724 created "2016-06-24" @default.
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- W2378003724 date "2008-01-01" @default.
- W2378003724 modified "2023-09-26" @default.
- W2378003724 title "A Study of the Influence of Inlet Pre-swirl on Flow and Heat Transfer Characteristics of a Labyrinth Seal" @default.
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