基于CFD的棉花调湿工艺中旋流式压力喷雾加湿技术的数值模拟  

Numerical simulation of cyclone pressure spray humidification technology in cotton humidity conditioning process based on CFD

作　　者：孔得丞 潘江如 刘彤馨 赵晴 Kong Decheng;Pan Jiangru;Liu Tongxin;Zhao Qing(School of Traffic and Logistics Engineering,Xinjiang Agricultural University,Xinjiang Urumqi,830052,China;College of Control Engineering,Xinjiang Institute of Engineering,Xinjiang Urumqi,830052,China)

机构地区：[1]新疆农业大学交通与物流工程学院,新疆乌鲁木齐830052 [2]新疆工程学院控制工程学院,新疆乌鲁木齐830052

出　　处：《机械设计与制造工程》2024年第9期16-20,共5页Machine Design and Manufacturing Engineering

基　　金：新疆维吾尔自治区自然科学基金(2020D01A117);中央引导地方科技发展专项资金(ZYYD2023B19)。

摘　　要：在棉花调湿工艺中,相对湿度是一个重要的影响因素,其直接影响棉花的品质。为保持调湿器内相对湿度的平衡,采用旋流式空气和压力喷雾的方法,对气液两相间的热质传递进行研究。利用CFD数值模拟的方法,基于DPM离散、耦合传热传质模型仿真模拟气液两相间热质传递过程,并对不同工况下调湿器出口处相对湿度进行分析。结果表明:当热风温度为130℃、入口空气速度为10 m/s、液滴温度为10℃、喷雾质量流量为14.4 kg/h时,出口处相对湿度与温度能分别达到60%、40℃左右,满足棉花调湿工艺的最佳要求。In cotton moisture control technology,relative humidity is an important influencing factor,which directly affects the quality of cotton.In order to maintain the balance of relative humidity in the humidifier,the heat and mass transfer between gas and liquid phases is studied by means of swirling air and pressure spray.Using CFD numerical simulation method,based on DPM discrete and coupled heat and mass transfer model,it simulates the heat and mass transfer process between gas-liquid phases,and analyzes the relative humidity at the outlet of the humidifier under different operating conditions.The results show that when the hot air temperature is 130℃,the inlet air speed is 10 m/s,the droplet temperature is 10℃,and the spray mass flow rate is 14.4 kg/h,the relative humidity and temperature at the outlet could reach about 60%and 40℃respectively,which met the best requirements of cotton moisture control technology.

关 键 词：棉花调湿 计算流体动力学 热质传递 数值模拟 

分 类 号：TS112[轻工技术与工程—纺织材料与纺织品设计]