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The Simulation of Turbine Cascade Based on OpenFOAM

Author: WeiJia
Tutor: ZhengQun
School: Harbin Engineering University
Course: Marine Engineering
Keywords: OpenFOAM Turbine cascade flow field Accelerated algorithm GAMG
CLC: TK14
Type: Master's thesis
Year: 2009
Downloads: 175
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Abstract


As computer technology rapid development and CFD methods matures , CFD traditional theoretical research and testing in the field of turbine design and analysis plays an important role . The main work of this paper is the development of the OpenFOAM software source code , and used to calculate the single row static cascade flow field , and the results of a comparative analysis commercial software . Finally, the accelerated algorithm and convergence stability . This paper to explore the the OpenFOAM software boundary condition , the source code of the interface processing methods and discrete format , the specific application of the theory and software combination , Static Cascade useful technical preparations for the calculation of a single column . Next, in OpenFOAM platform to achieve the numerical simulation of single-row static cascade . Comparing the calculated results with the results of similar commercial software . Spanwise direction of the three -section static pressure , Mach number and density distribution , the angular distribution of the outlet flow , pressure and suction surface Mach number and static pressure distribution , export spanwise direction total pressure loss coefficient distribution , etc. The comparative analysis of the draw useful conclusions . Finally , the accelerated algorithm and affect convergence stability underrelaxation theoretical analysis were verified by example to save computing time on the pros and cons of the linear equations algorithm and the predictor , draw geometric multigrid solving importance of device GAMG . The solver is the core of the calculation method , good solver for solving the hydrodynamic problem is the key, and the development of good solver is still an important direction of the numerical simulation .

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CLC: > Industrial Technology > Energy and Power Engineering > Thermal engineering, heat > Gas turbine ( turbine )
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