| As a kind of urban rapid rail transit, subway with a lot of merits such as rapid, low cost, safe, comfort and so on is developed in many countries. As axial-fans are main devices for ventilation in subway, the technical indexes such as flow rate, pressure and efficiency for axial-fan in subway receive great attention in the design. Axial-fans working at low cost and safely becomes an important question for discussion. About turbomachinery such as axial-fan, the stability of blade is very important. Aeroelasticity is the phenomenon which exhibits appreciable reciprocal interactions between which aerodynamic forces and the deformations induced in the structure of turbomachinery's blades. The problem about turbomachinery aeroelasticity is an important part of fluid-structure coupling. The aeroelasticity analysis for turbomachinery is necessary.In this text the research object is 18# axial-fan in Beijing subway. Internal flow and blade aeroelasticity of axial-fans in Beijing subway are researched by numerical simulation method combined with experiment and measure's data. The material attribute of blade is obtained by experiment. The work parameters of axial-fan in Beijing subway is obtained by spot measure. With the experiment and measure's data, we simulate all the flow field of axial-fan in subway withκ?εmodel by CFD soft-CFX10. The calculation results show good agreement with the data taken from experiment. The work flow of partitioned loosely coupled method is analyzed detailed. The blade aeroelasticity is simulated by MFX-ANSYS/CFX. The aerodynamic forces and dynamic characteristics of the blade is analyzed.In this text the CFD simulation and fluid-structure coupling simulation of complex model is discussed meaningfull. Maybe it is useful for reference.
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