A combined CFD-based simulation and experimental study of particle dispersion in a high-concentration airtight space under unorganized airflow

Advances in Mechanical Engineering Pub Date : 2024-02-01 DOI:10.1177/16878132231221556

Xiaonan Li, Tianpeng Li, Tong Xu, Ran Zhao, Xinbao Gao, Zhaolong Xuan

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Abstract

It is significant to obtain the particle distribution data for workpiece processing and industrial protection strategies. To simulate the particle dispersion in a high-concentration airtight space under unorganized airflow, a CFD-based simulation and experimental were utilized in this study. The proposed method works in three steps. The first step is to use Stokes-MRF-Fan-CFD model to simplify the distribution of high-concentration particles calculation to the dispersion state of the gas components. The second step is to compute the airflow patterns and dispersion of particles. The third step is to prove the feasibility of Stokes-MRF-Fan-CFD model. The results of this model in particle dispersion show ±200 mg·m−3 of absolute error, ±20% of relative error, and 88.5747 grade of simulation accuracy. And the results of particle concentration distribution can be mutually confirmed with the streamline and velocity vector distribution in the airtight space, providing a promising and innovative model for the particle dispersion in a high-concentration airtight space under unorganized airflow.

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基于 CFD 的无组织气流条件下高浓度密闭空间中颗粒扩散的模拟与实验联合研究

获得颗粒分布数据对于工件加工和工业保护策略具有重要意义。为了模拟无组织气流条件下高浓度密闭空间中的颗粒分散情况，本研究采用了基于 CFD 的模拟和实验方法。建议的方法分三步进行。第一步是利用斯托克斯-MRF-Fan-CFD 模型将高浓度粒子的分布计算简化为气体成分的分散状态。第二步是计算气流模式和颗粒物的分散。第三步是证明斯托克斯-MRF-Fan-CFD 模型的可行性。该模型在颗粒扩散方面的结果显示，绝对误差为±200 mg-m-3，相对误差为±20%，模拟精度为 88.5747 级。粒子浓度分布结果可与气密空间的流线和速度矢量分布相互印证，为无组织气流条件下的高浓度气密空间粒子扩散提供了一种有前途的创新模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Advances in Mechanical Engineering

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