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Numerical investigation of effect of tip clearance on stress of high pressure turbine rotor [ 发自手机版 http://muchong.com/3g ] |
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李钰洁: 金币+5, ★★★★★最佳答案 2014-12-01 23:38:45
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李钰洁: 金币+5, ★★★★★最佳答案 2014-12-01 23:38:45
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Accession number: 20143218042397 Title: Numerical investigation of effect of tip clearance on stress of high pressure turbine rotor Authors: Li, Yu-Jie1; Liu, Yong-Bao1 Author affiliation: 1 College of Power Engineering, Naval University of Engineering, Wuhan 430033, China Corresponding author: Li, Y.-J. Source title: Hangkong Dongli Xuebao/Journal of Aerospace Power Abbreviated source title: Hangkong Dongli Xuebao Volume: 29 Issue: 7 Issue date: July 2014 Publication year: 2014 Pages: 1695-1700 Language: Chinese ISSN: 10008055 CODEN: HDOXE5 Document type: Journal article (JA) Abstract: For the problem that tip clearance of the high pressure turbine rotors has a significant effect on the aerodynamic characteristic and structural reliability, numerical simulation based on conjugate heat transfer method of turbine rotors with different tip clearance sizes was performed. Coupled calculation of the energy transferred from physical interface between fluid and solid was made. The effects of leadage vortex flow on the distribution of temperature and pressure were presented, and the effects of thermal stress and aerodynamic stress on the structure intensity of blades were analyzed. It showed that, with the increase of tip clearance height, the leakage flow velocity increased and the thermal stress changed significantly. The maximum equivalent stress increased by 2.6% increase while the tip clearance height changed from 0.3% to 3.0%. The acquired results can provide a theoretical basis for tip clearance control. Number of references: 21 Main heading: Turbine components Controlled terms: Aerodynamics - High pressure effects - Leakage (fluid) - Thermal stress Uncontrolled terms: Aerodynamic characteristics - Conjugate heat transfer - Distribution of temperature - Leakage flow - Numerical investigations - Structural reliability - Tip clearance - Turbine rotor Classification code: 452.3 Industrial Wastes - 617 Turbines and Steam Turbines - 651.1 Aerodynamics, General - 931.2 Physical Properties of Gases, Liquids and Solids DOI: 10.13224/j.cnki.jasp.2014.07.024 Database: Compendex Compilation and indexing terms, © 2014 Elsevier Inc. |
2楼2014-12-01 23:37:16