基于CFD的干燥室流场均匀性优化研究

Optimization of Flow Field Uniformity in Drying Chamber Based on CFD

为了优化陶瓷干燥室内部流场均匀性,提高陶瓷的干燥质量,利用ANSYS 18.0软件对干燥室进行流场数值模拟,与实际情况进行对比验证,并进行结构改进。以气流速度不均匀系数与温度不均匀系数作为评价指标,对仿真中采集到的气流速度与温度数据进行分析研究。结果表明:干燥室内热风流动主要依靠风锥产生各种扰动,干燥室内气流速度不均匀系数为0.582,温度不均匀系数为0.358×10^(-2),模拟结果准确,与实际值的误差在10%以内。在干燥室侧壁增设风筒后,改善其内部气流分布规律,气流速度与温度均有小幅度提高,速度不均匀系数降低11.3%,温度不均匀系数降低4%。

In order to optimize the uniformity of the flow field in the ceramic drying chamber and improve the drying quality of ceramics,the flow field of the drying chamber was simulated by using ANSYS 18.0 software,which was verified by comparison with the actual situation,and the structure was to be improved accordingly.The air velocity and temperature data collected in the simulation are analyzed and studied by using the air velocity and temperature non-uniformity coefficients as evaluation indicators.The results show that the hot air flow in the drying chamber mainly depends on the wind cone to produce various disturbances.The non-uniform coefficient of air flow velocity and temperature in the drying chamber is 0.582 and 0.358 respectively×10^(-2).The simulation result is accurate,and the error with the actual value is within 10%.After adding air duct on the side wall of the drying chamber,the air flow distribution law inside the drying chamber was improved,the air flow velocity and temperature were slightly increased,the velocity non-uniformity coefficient was reduced by 11.3%,and the temperature non-uniformity coefficient was reduced by 4%.