旋流片对喷嘴流场特性影响的数值研究Numerical Investigation on Flow Field Characteristics of Nozzle with Swirl Distributor
李川,王时龙,张贤明,易力力
LI Chuan1,2,WANG Shi-long2,ZHANG Xian-ming1
摘要(Abstract)：
以水为流体介质,建立了旋流喷嘴的计算流体动力学模型。通过调整旋流喷嘴旋流片的螺旋升角和通流面积等结构参数,对喷嘴雾化的压力、速度场进行计算,推导了喷嘴的雾化角,从而研究旋流片对喷嘴流场特性的影响。将数值模拟的结果与试验结果进行对比,两者基本吻合。验证了数值计算方法的正确性,对旋流喷嘴的设计具有指导意义。
The computational fluid dynamics model of a swirl nozzle is established with the water as the working fluid of atomization.By means of adjusting the spiral angle and streaming area,different velocity fields,pressure fields and atomization angles are carried out to study the effect of the swirl distributor to the flow characteristics of the nozzle.Comparing with the experimental results,the same situations validate the reliability of the numerical simulation method,which is useful for the design of the swirl nozzle.
关键词(KeyWords)：
喷嘴;计算流体动力学;雾化;数值模拟
nozzle;computational fluid dynamics;atomization;numerical simulation
基金项目(Foundation): 重庆市自然科学基金项目(CSTC,2006BB2251)
作者(Author):
李川,王时龙,张贤明,易力力
LI Chuan1,2,WANG Shi-long2,ZHANG Xian-ming1
参考文献(References)：
- [1]田春霞,仇性启,崔运静.喷嘴雾化技术进展[J].工业加热,2005,34(4):40-43.
- [2]周华,朱畅,范明豪,等.高压旋芯喷嘴的雾化特性[J].农业机械学报,2006,37(1):63-66.
- [3]Van Sint Annaland M,Deen N G,Kuipers J A M.Nu-merical simulation of gas-liquid-solid flows using acombined front tracking and discrete particle method[J].Chemical Engineering Science,2005,60(11):6188-6198.
- [4]冉景煜,张力,蒲舸,等.渐扩切向槽角度对低压燃油雾流动特性影响的数值研究[J].中国电机工程学报,2006,26(1):45-50.
- [5]王福军.计算流体动力学分析-CFD软件原理与应用[M].北京:清华大学出版社,2004.