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Fluid-Structure Interaction Static Strength Analysis of a Certain Compressor Stage Blade

Author: ZhangXiaoHui
Tutor: ZhongJingJun
School: Dalian Maritime University
Course: Marine Engineering
Keywords: Compressor Blade Fluid-structure interaction Engineering empirical formula
CLC: U664.131
Type: Master's thesis
Year: 2011
Downloads: 200
Quote: 1
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Abstract


Leaves important parts of the compressor energy conversion , analysis of its strength has been the focus of attention in the field of turbomachinery mechanics at home and abroad . Due to its working condition is very complex , high - speed operation , leaves both under enormous centrifugal force , but also to withstand the aerodynamic , as well as the work of the moment , vibration , and thus prone to all kinds of breakdowns . Once the blade failure or fracture , a serious threat to the safe operation of the entire unit , and may even lead to a major accident , causing serious economic losses and damage . The blade structure design directly affects the quality of the compressor or the security of the entire gas turbine engine , the durability and reliability . Situation is very complicated due to the structure and the load of the blade , with a high degree of coupling , to be more realistic numerical simulation of fluid-structure interaction must be calculated . A heavy duty gas turbine compressor for a certain type of ground - level static vane based on CFD static strength analysis , taking into account the aerodynamic loads and centrifugal loads composite , using ANSYS CFX and ANSYS Workbench , different conditions of one - way pneumatic The strength of fluid-structure interaction analysis . According to the results , the blade stress and maximum deformation position of maximum strength and leaves were the main factors . The analysis of the design conditions blade aerodynamic load , the total deformation under the centrifugal force load and coupling these two load , the stress distribution . And comparative analysis of the design conditions and design conditions aerodynamic loads and coupled the case of these two load maximum total deformation of the blade and the maximum equivalent stress to arrive at these three kinds of load case blade deformation and stress distribution characteristics , different working conditions the maximum total deformation of the blade and the maximum equivalent stress . In addition, in the case of the experiment , in order to verify the correctness of the results of numerical simulation , engineering empirical formulas were compared . The results showed that the rotor blades each section stress the same trend , the biggest difference of no more than 14 % .

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship machinery > Ship power plant > Gas power plant > Gas turbine
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