隧道窑预热带窑顶逆吹角度对温度场和速度场影响的数值模拟  

Numerical Simulation of the Influence of the Top Blowing Angle of the Tunnel Kiln Preheating Zone on the Temperature Field and Velocity Field

作　　者：钟斌 冯青 宫小龙 ZHONG Bin;FENG Qing;GONG Xiaolong(Jingdezhen Ceramic Institute,Jingdezhen 333001,China)

机构地区：[1]景德镇陶瓷大学材料科学与工程学院,景德镇333001

出　　处：《中国陶瓷》2021年第9期83-90,共8页China Ceramics

摘　　要：使用计算流体动力学fluent软件,建立了隧道窑预热带三维物理模型,并采用结构化六面体网格对模型进行网格划分,选择realizable-k-e湍流模型,设置边界条件,对隧道窑预热带窑内气体流动进行数值模拟,研究逆吹气流的角度对温度场和速度场的影响。结果表明:逆吹角度为180°、165°、150°时,能有效地提高截面温度的均匀性;适当增加逆吹速度,有利于窑内温度场的均匀性;逆吹角度为165°、150°、135°时,逆吹气流会直吹产品,造成产品的局部温差。This paper uses computational fluid dynamics fluent software to establish a three-dimensional physical model of the tunnel kiln preheating zone and uses a structured hexahedral grid to mesh the model, select the realizable-k-e turbulence model, set the boundary conditions, and preheat the tunnel kiln Numerical simulation of the gas flow in the belt kiln is carried out to study the influence of the angle of the back-blowing airflow on the temperature field and velocity field. The results show that: when the back blowing angle is 180 °, 165 °, 150 °, the uniformity of the cross-section temperature can be effectively improved;appropriately increasing the back blowing speed is beneficial to the uniformity of the temperature field in the kiln;the back blowing angle is 165 °, At 150 °and 135 °, the reverse airflow will blow directly on the product, causing a local temperature difference of the product.

关 键 词：隧道窑预热带 逆吹气流 温度场 数值模拟 

分 类 号：TQ174.6[化学工程—陶瓷工业]