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Numerical Analysis of General Groove Geometry for Dry Gas Seals

机译：干气密封件通用槽几何形状的数值分析

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By Changing the key points on the spiral curve, general groove geometry was determined. Considering the simplicity of modeling and analysis, cubic spline function was used to express the general groove profile. By using the boundary fitted coordinate system transformation, irregular computational domain was transferred to regular region; Based on flow conservation principle, finite volume method was applied to discrete compressible Reynolds equation; By the application of Newton-Raphson iteration method for solving algebraic equation, numerical model of general groove dry gas seals was established. When compared sample results with shallow groove theory, the capacity and stiffness of numerical results match well with theoretical ones, verifying the accuracy of novel numerical model. Through analysis of three typical groove seals, spiral groove seal has strongest carrying capacity. Pressure distribution of three groove seals subjects to the law of hydrodynamic pressure effect. And the numerical model established in this paper will offer a general calculate platform for optimization of groove geometry in the future.
机译：通过改变螺旋曲线上的关键点，确定一般凹槽几何形状。考虑到建模和分析的简单性，使用立方样条函数来表达通用凹槽轮廓。通过使用边界拟合坐标系转换，不规则计算域被转移到常规区域;基于流动保护原理，有限体积法应用于离散可压缩雷诺等式;通过在求解代数方程的牛顿 - 拉赛迭代方法的应用中，建立了一般沟槽干气密封的数值模型。与浅槽理论进行比较结果时，数值结果的容量和刚度与理论上匹配良好，验证新型数值模型的准确性。通过分析三个典型的沟槽密封，螺旋槽密封具有最强的承载能力。三个沟槽密封件对水动力压力效应定律的压力分布。本文建立的数值模型将在未来提供一般计算平台，以便将来优化凹槽几何体。

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