| Three—Dimensional Simulation of Nonstationary Flow Phenomena in “Last Stage—Exhaust Hood” COmpartment |
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| 作者单位： | HeatofDepartmentofTheoreticalMechanicsandHydraulics,Docent,KharkovStateAutomobile＆HighwayTechnicalUni |
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| 摘 要： | Threed-mensional nonstationary model of areodynamical interaction of turbine stage and exhaust hood is realized,based on nonstationary 3D codes for calculation of inviscid transonic flow through stage^3] and exhaust hodd^4] which consist of diffuser and space under casing.The codes are built with the use of the explicit Godunov‘s 2nd order difference scheme.Some results of flow simulation through the compartments“Stage-exhaust hodd”，“stage-exhaust axial-radial diffuser”for wide range of volumetric flow rates are represented.
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| 关 键 词： | 蒸汽透平机 不稳定流三维模拟 内部流 |
Three-dimensional simulation of nonstationary flow phenomena in “Last stage-exhaust hood” compartment |
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| Authors: | V G Solodov V I Gnesin |
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| Affiliation: | (1) Heat of Department of Theoretical Mechanics and Hydraulics, Kharkov State Automobile & Highway Technical University, 310078 Kharkov, Ukraine;(2) Head of Department of Aerodynamics of Power Machines, Institute for Problems in Machinery, Ukrainian Academy of Sciences, 310046 Kharkov, Ukraine |
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| Abstract: | Three-dimensional nonstationary model of aerodynamical interaction of turbine stage and exhaust hood is realized, based on
nonstationary 3D codes for calculation of inviscid transonic flow through stage3] and exhaust hood4] which consist of diffuser and space under casing. The codes are built with the use of the explicit Godunov’s 2nd order difference
scheme. Some results of flow simulation through the compartments “stage-exhaust hood,” “stage-exhaust axial-radial diffuser”
for wide range of volumetric flow rates are represented. |
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| Keywords: | internal flow steam turbine last stage exhaust hood numerical simulation |
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