基于流固耦合的对旋风机二级叶片瞬态受力数值模拟分析
首发时间:2015-11-17
摘要:本文基于流固耦合力学中弱耦合的方法,利用ANSYS计算叶片的结构动力响应,通过MFX-ANSYS/CFX将流场中的压力结果和结构场中的位移结果进行交换,研究了对旋式轴流通风机二级叶片瞬态受力情况。数值模拟实验结果表明:二级叶片应力分布和典型的悬臂梁结构的应力分布一致,大流量时叶片的应力和变形随时间变化不大;小流量时叶片的变形和应力随时间出现小幅度变化,二级叶轮区域附近流动的恶化使得二级叶片需要承受气流的冲击,二级叶片需要承受更大的压力。该实验结果为工程领域的进一步推广应用提供了理论依据。
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基于流固耦合的对旋风机二级叶片瞬态受力数值模拟分析
Abstract: Based on the fluid solid coupling mechanics of weak coupling method, The structural of the blade dynamic response is calculated by ANSYS, through MFX-ANSYS/CFX, flow pressure and the structure of the displacement results are exchanged, transient stress is focused on the secondary blade of rotating axis flow fan. The results show that the stress distribution of the two stage blades and the stress distribution of the typical cantilever beam are the same. The stress and deformation of the blade are not big. The deformation and stress of the blade are small, and the flow around the region of the two stage is more and more pressure. The experimental results provided a theoretical basis for the further application of the engineering field.
Keywords: Fluid machinery, fluid solid coupling, the two stage blades of a cyclone, numerical simulation
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