湍流自然对流中沉降重惯性粒子的热行为

中文摘要 AI 辅助

我们研究了体相湍流热对流中沉降重惯性粒子的动力学和热行为。在均匀瑞利-贝纳德对流设置中进行了直接数值模拟，其中均匀的平均温度梯度驱动统计均匀的对流湍流，并注入被动惯性粒子。我们量化了动态和热惯性对粒子统计的影响。特别是，我们研究了粒子速度和温度的波动如何追溯到粒子与流体变量之间的相关性，以及粒子温度统计如何受到沉降和优先集中的相互作用的影响。

英文摘要

We investigate the dynamical and thermal behaviour of settling heavy inertial particles in bulk turbulent thermal convection. Direct numerical simulations are performed in a homogeneous Rayleigh-Benard convection setup, where a uniform mean temperature gradient drives statistically homogeneous convective turbulence seeded with passive inertial particles. We quantify the effects of dynamic and thermal inertia on particle statistics. In particular, we investigate how the fluctuations of particle velocity and temperature can be traced back to the correlations between particle and fluid variables, and how particle temperature statistics is affected by the interplay of settling and preferential concentration.

发表机构

• University of Torino（都灵大学）

机构由 AI 辅助整理，请以论文原文为准。