Aerothermodynamics of tight rotor tip clearance flows in high-speed unshrouded turbines
نویسندگان
چکیده
منابع مشابه
Study of Rotor Tip-Clearance Flow Using Large-Eddy Simulation
A large-eddy simulation has been performed to study the temporal and spatial dynamics of a rotor tip-clearance flow, with the objective of determining the underlying mechanisms for low pressure fluctuations downstream of the tip-gap. Simulation results are compared with experimental measurements, and favorable agreements are observed in both qualitative and quantitative sense. Typical vortical ...
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Characteristics of rotor blade tip clearance flow in axial compressors can significantly affect their performance and stable operation. It may also increase blade vibrations and cause detrimental noises. Therefore, this paper is contributed to investigate tip leakage flow in a low speed isolated axial compressor rotor blades row. Simulations are carried out on near-stall condition, which is val...
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A large-eddy-simulation-based ow solver that combines an immersed-boundary technique with a curvilinear structured grid has been developed to study the temporal and spatial dynamics of an incompressible rotor-tipclearance ow. The overall objective of these simulations is to determine the underlying mechanisms for lowpressure uctuations downstream of the rotor near the end wall. Salient fe...
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Zhiqiang Yang 1, Minghui Yin 1,*, Yan Xu 2, Yun Zou 1, Zhao Yang Dong 3,4 and Qian Zhou 5 1 School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China; [email protected] (Z.Y.); [email protected] (Y.Z.) 2 School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; [email protected] 3 China Southern Power...
متن کاملMaster thesis : Tip leakage flow in high pressure turbines
In the framework of this master thesis, a numerical study has been carried out in order to investigate the effect of tip geometry on the tip leakage flow and heat transfer features in a unshrouded high pressure axial flow turbine stage designed by Erhard [10]. Four different tip profiles were considered, namely a default flat tip, a modified flat tip, a modified double squealer tip and a modifi...
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ژورنال
عنوان ژورنال: Applied Thermal Engineering
سال: 2014
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2014.01.015