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DOI:
燃气轮机技术:2018,31(2):37-41
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三类篦齿流动特性计算分析
(中国航发商用航空发动机有限责任公司,上海 201108)
Flow Resistance Characteristics of Labyrinth Seal Computation and Analysis
(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 201108, China)
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中文摘要: 为掌握直齿、斜齿、台阶齿三种结构在不同转速、旋转半径、齿数、篦齿高度、齿顶间隙、齿间距参数下 的流动变化情况,本文对三类篦齿模型开展数值计算。在仅调整一项影响因素的情况下,分别分析转速、旋 转半径、齿数、篦齿高度、齿顶间隙、齿间距变化对流量的影响。经分析,齿顶间隙、齿数及旋转半径对流量变 化影响较大,齿高、齿间距、转速的影响较小。
中文关键词: 空气系统  篦齿  流动特性  数值计算
Abstract:In order to grasp the flow resistance characteristics of labyrinth seal,straight teeth,inclined teeth and stepped teeth are analyzed in this paper in different parameters such as rotational speed,radius,tooth number,height of tooth,clearance of sealing,distancc between sealing points.And it’s found that clearance of sealing,radius and tooth number have great influence on flow rate,while height of tooth,clearance of sealing and rotational speed have little influence on flow rate.
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[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.

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