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引用次数: 0
摘要
结合基本流动解法和经验数据，建立了亚临界雷诺数范围内（（300\le Re \le 3\times 10^5\））环绕圆柱体流动的混合势能流（HPF）模型。通过将所开发的近体解法与 von Karman 的涡流尾流模型相结合，计算出了环绕圆柱体流动的完整解法。然后计算并给出了涡流脱落引起的振荡力（包括横向升力）以及脱落频率的结果。在计算出圆柱体周围流动的完整解决方案后，HPF 模型可作为一个步骤，利用保角映射计算其他崖体周围的流动。
A hybrid potential flow model for shedding flow around a circular cylinder
A Hybrid Potential Flow (HPF) model for flow around a circular cylinder in the subcritical Reynolds number range (\(300 \le Re \le 3\times 10^5\)) is developed using a combination of elementary flow solutions and empirical data. By joining this developed near-body solution with von Karman’s model for the vortex wake, a complete solution for flow around a circular cylinder is calculated. Results for oscillatory forces, including the transverse lift force, due to vortex shedding as well as shedding frequencies are then calculated and presented. With the complete solution for flow around a cylinder calculated, the HPF model can be used as a step to calculate the flow around other bluff bodies using conformal mapping, an approach that has been developed and presented by the authors in a related paper.
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