摘要
对一种小尺寸复杂结构的旋流式喷嘴进行了实验和数值研究。实验研究中确定了喷嘴前后压差与流量间的对应关系。数值研究中应用VOF方法对喷嘴内三维气液两相流动进行了计算 ,并与实验结果做了比较 ,二者吻合较好。而后应用该算法对喷嘴在不同结构尺寸下的流动过程进行了计算 ,对比分析后发现 :旋流室及旋流器的结构和尺寸均会对喷嘴出口速度产生影响 。
Experimental and numerical study on a small swirl atomizer with complex structure were conducted, In the experimental research, the relationship between pressure difference of atomizer and mass flow rate was decided. In numerical research, 3-D gas-liquid flow in the atomizer was calculated by employing VOF method, which was validated by the experimental data with good agreement each other. Then, with this methodology, flow process in the atomizer with different structure and dimension was simulated. After analysis about these numerical results, it was found that: the atomizer exit velocity can be affected by both the structure and dimension of swirl-chamber and swirler, however, the atomization angle is mainly affected by the screw rise angle and the number of the swirl-er grooves.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2003年第1期28-32,共5页
Journal of Propulsion Technology
关键词
旋流式喷嘴
数值计算
实验
Atomization
Computer simulation
Two phase flow
