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Numerical Study on Self-consistency Centering Process of Periodic Symmetric Struts Support

机译：周期对称支撑的自洽定心过程数值研究

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In this paper, the simplified three-dimensional model of Periodic Symmetric Struts Support (PSSS) was established, which is applied to a certain type of gas turbine. The software of computational fluid Dynamics (CFD) and the standard k-s turbulence model are used in the numerical simulation. To simulate the coupling problems of fluid and solid, the numerical models by considering the heat transfer problem coupling with the solid and fluid have been developed. The internal flow field in PSSS was numerically simulated by an effective method for solving integrated coupling problems. The temperature field and thermal deformation rule of the PSSS was obtained. Through comparison coordinate values of the checked points before and after thermal deformation, the impact of thermal deformation on bearing center level height under temperature load was studied. The centering process of the PSSS at high temperature state was verified.
机译：本文建立了周期性对称支撑（PSSS）的简化三维模型，并将其应用于某类型的燃气轮机。数值模拟中使用了计算流体动力学（CFD）软件和标准的k-s湍流模型。为了模拟流体和固体的耦合问题，通过考虑与固体和流体耦合的传热问题，建立了数值模型。通过一种有效的方法解决了整体耦合问题，对PSSS内部流场进行了数值模拟。得到了PSSS的温度场和热变形规律。通过比较热变形前后检查点的坐标值，研究了热变形对温度载荷作用下轴承中心高度的影响。验证了PSSS在高温状态下的对中过程。

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