Navier-Stokes analyses of the redistribution of inlet temperature distortions in a turbine
Navier-Stokes analyses of the redistribution of inlet temperature distortions in a turbine
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DOI：
10.2514/3.25431
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发表时间：
1987-06
影响因子：
1.9
通讯作者：
M. Rai;R. Dring
中科院分区：
文献类型：
--
作者：
M. Rai;R. Dring
已知离开燃烧器并进入燃气涡轮机发动机的涡轮机的流包含总温度的空间和时间变化。尽管历史上一直假定涡轮机转子响应于平均温度，但最近的实验证据表明，转子实际上将较热和较冷的流体流分开，使得较热的流体移向压力面，较冷的流体移向吸力面。在本研究中，采用时间精确的、二维的、薄层的、对涡轮机级的纳维尔-斯托克斯分析来分析这种现象。测量和计算结果之间的粗略定性协议表明，分析已成功地捕捉到许多重要的流动特征。
The flow exiting the combustor and entering the turbine of a gas turbine engine is known to contain both spatial and temporal variations in total temperature. Although historically it has been presumed that the turbine rotor responded to the average temperature, recent experimental evidence has demonstrated that the rotor actually separated the hotter and cooler streams of fluid so that the hotter fluid migrated toward the pressure surface and the cooler fluid migrated toward the suction surface. In the present study a time-accurate, two-dimensional, thin-layer, Navier-Stokes analysis of a turbine stage was used to analyze this phenomenon. The rough qualitative agreement between the measured and the computed results indicated that the analysis had successfully captured many of the important features of the flow.