A numerical simulation has been made of the combined stroke swimmer (a deformable sphere) and compared with the results of the second-order perturbation theory of Felderhof and Jones (2017). At a small ratio of the amplitude of the deformation of the sphere and the radius of the sphere the numerical and theoretical results agree well. However for a larger value of this ratio the results deviate due to inertia. The streamlines, as calculated numerically, change significantly with increasing inertia.

中文翻译：

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不可压缩流体中组合式游泳运动员的数值研究

对组合式游泳运动员（可变形球体）进行了数值模拟，并与 Felderhof 和 Jones (2017) 的二阶微扰理论的结果进行了比较。在球体变形幅度与球体半径的小比例下，数值和理论结果吻合良好。然而，对于该比率的较大值，结果会因惯性而发生偏差。数值计算的流线随着惯性的增加而显着变化。