The methodology previously proposed by the authors to solve particle-laden turbulent flows through a multiscale approach is extended by introducing a continuous function for the dispersed phase concentration. The proposed continuous model is especially useful for studying the motion of particle streams in which gravitational and inertial effects cause the particles to deviate from a simple trajectory following the surrounding flow, as would be the case for the limit of very small, massless particles. The results show an excellent comparison between the solutions obtained using the continuous model and simulations evaluating the forces on each particle individually. Distinct advantages of the continuous approach are a much lower computational overhead, a better load balance and ease of parallelization. The multiscale methodology proposed may be used in the area of modeling and simulation of airborne infectious diseases.

作者先前提出的通过多尺度方法解决含有颗粒的湍流的方法通过引入分散相浓度的连续函数得到了扩展。所提出的连续模型对于研究粒子流的运动特别有用，其中重力和惯性效应导致粒子偏离跟随周围流动的简单轨迹，就像非常小的、无质量粒子的极限情况一样。结果表明，使用连续模型获得的解决方案与单独评估每个粒子上的力的模拟之间进行了很好的比较。连续方法的显着优势是计算开销低得多、负载平衡更好和易于并行化. 提出的多尺度方法可用于空气传播传染病的建模和模拟领域。