论文标题
领域之后的人口分布
Population Distribution in the Wake of a Sphere
论文作者
论文摘要
热量和从物体的质量转移的流体物理学对于自然现象以及许多工程应用至关重要。在这里，我们报告了流体速度，压力，标量浓度和尾流的标量通量的空间分布的数值结果（雷诺数为25至285）。我们发现通过洛伦兹分布很好地描述了种群密度。我们在对称的唤醒状态下以及更复杂的稳定斜尾唤醒结构中观察到这种显然是普遍的形式，其雷诺数数量大于225。种群密度分布可确定无量纲动能的增加和量表磁通量的增加，而雷诺数的增加，而无质量量表的数量不高，而re级的数量不高。
The fluid physics of the heat and mass transfer from an object in its wake has much importance for natural phenomena as well as for many engineering applications. Here, we report numerical results on the population density of the spatial distribution of fluid velocity, pressure, scalar concentration and scalar fluxes of a wake flow past a sphere in the steady wake regime (Reynolds number 25 to 285). We find the population density to be well described by a Lorentzian distribution. We observe this apparently universal form both in the symmetric wake regime and in the more complex three dimensional wake structure of the steady oblique regime with Reynolds number larger than 225. The population density distribution identifies the increase in dimensionless kinetic energy and scalar fluxes with the increase in Reynolds number, whereas the dimensionless scalar population density shows negligible variation with the Reynolds number.
