喷砂机模型气固两相流数值模拟及PIV实验验证

doi:10.12068/j.issn.1005-3026.2022.12.011

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (12): 1748-1753.DOI: 10.12068/j.issn.1005-3026.2022.12.011

喷砂机模型气固两相流数值模拟及PIV实验验证

黄思，唐梓睿，欧晨希

(华南理工大学机械与汽车工程学院，广东广州510641)

发布日期:2022-12-26
通讯作者: 黄思
作者简介:黄思(1962-)，男，广西南宁人，华南理工大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(21878102)．

Numerical Simulation and PIV Experimental Validation of Gas-Solid Two-Phase Flow in Sandblasting Machine Model

HUANG Si， Tang Zi-rui， OU Chen-xi

School of Mechanical and Automotive Engineering， South China University of Technology， Guangzhou 510641， China.

Published:2022-12-26
Contact: HUANG Si
About author:-
Supported by:
-

摘要/Abstract

摘要： 喷砂机内部颗粒撞击壁面是其失效的主要原因.为研究喷砂机内颗粒的运动规律，使用EDEM-Fluent耦合方法计算分析喷砂机模型内部气固两相流动特点.采用粒子图像测速(PIV)法，测量喷砂机内部颗粒运动情况以验证模型的有效性.结果表明:高速气体进入喷砂机后，在内部轴截面上产生一个带动底部颗粒运动、随时间逐渐稳定的主要漩涡，水平面上形成一个位于几何中心的漩涡；颗粒在入口气体的带动下，被吹起的高度逐渐稳定，运动速度是邻近气流速度的 8%～10%；模拟结果和实验结果的局部误差和整体误差均小于10%，表明耦合计算方法是切实可行的.

关键词: 喷砂机；固体颗粒；EDEM-Fluent耦合；PIV方法

Abstract: Particle impact inside a sandblaster is the main cause of sandblaster failure. To study the motion of the particles inside sandblasters， the EDEM-Fluent coupling method was used to analyze the characteristics of the gas-solid two-phase flow. The particle image velocimetry(PIV)method was used to obtain the particle motion inside the sandblasting tank to verify the model’s validity. The results demonstrated that after the high-speed gas enters the machine， a major vortex drives the motion of the bottom particles and gradually stabilizes in the axial section. Another vortex is generated and located in the geometric center of the horizontal plane. The particles are driven by the high-speed gas and blown up to a gradually stable height and the particle velocity is about 8% and 10% of the neighboring airflow. The local and overall errors of the simulation results and test results are less than 10%， indicating that the coupling calculation method is practical and feasible.

Key words: sandblasting machine; solid particle; EDEM-Fluent coupling; PIV method

中图分类号:

TE935

黄思，唐梓睿，欧晨希. 喷砂机模型气固两相流数值模拟及PIV实验验证[J]. 东北大学学报（自然科学版）, 2022, 43(12): 1748-1753.

HUANG Si， Tang Zi-rui， OU Chen-xi. Numerical Simulation and PIV Experimental Validation of Gas-Solid Two-Phase Flow in Sandblasting Machine Model[J]. Journal of Northeastern University(Natural Science), 2022, 43(12): 1748-1753.

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喷砂机模型气固两相流数值模拟及PIV实验验证

Numerical Simulation and PIV Experimental Validation of Gas-Solid Two-Phase Flow in Sandblasting Machine Model

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