摘要
为研究喷嘴内流场分布对"气鼓"现象产生的影响,建立喷嘴三维仿真模型,利用计算流体动力学方法对喷嘴内流场进行仿真分析,并结合物理学相关知识及吉布斯吸附公式等原理,探讨"气鼓"产生的原因及形成过程,分析过程采用Mixture两相流模型和标准k-ε双方程模型。研究表明:喷嘴盖内产生的负压、喷嘴弯管处出现的螺旋流及溶液中产生的大量气泡是产生"气鼓"现象的主要因素。在喷嘴芯座上添加4块均匀分布的挡流板,可削弱喷嘴弯管处的螺旋流对"气鼓"的影响。削弱"气鼓"现象对染机运行的影响,可提高染机的工作效率。
In order to study the impact of nozzle flow-field distribution on tambour phenomenon, a three-dimensional simulation model for the nozzle is developed, and the flow field in the nozzle is simulated by means of computational fluid dynamics method. The producing reasons and forming process of tambour phenomenon are discussed by use of physics knowledge and Gibbs adsorption equa- tion. The results show that main factors affecting the tambour phenomenon are the negative pressure caused by liquid flow, the spiral flow formed in the elbow and plenty of bubble coming from dyeing solution. Several uniform distribution adjustment panels are added in the nozzle wick ,which can weaken the influence of spiral flow.
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2011年第1期98-102,共5页
Journal of University of Jinan(Science and Technology)
基金
济南"泉城学者"建设工程招标项目(0207)
山东省重点学科研究基金(XTD0713)
关键词
喷嘴
“气鼓”现象
织物扭结
汽化核
表面活性剂
nozzle
tambour phenomenon
tangle phenomenon
bubble nucleation
surfactant
