Affiliation:
1. Hebei University of Technology
Abstract
The flowand spraycharacteristic of effervescent atomization nozzle has been studied experimentallyandthe inner flow fieldwasanalyzedwithnumerical method. Experiments show that the injection pressure and air/liquid ratio (ALR) are the major factors impacting the atomization stability, and the flow coefficientof the nozzleranged in 0.1-0.15. The VOF simulation of the inner flow field of the nozzle reveals the generaltransformationprocess of the bubble, and the region near the exit orifice plays the dominant roleduringtheatomizationprocesswhere miniature bubbles are generated, expanded in size and accelerated and interacting with the local flow field.
Publisher
Trans Tech Publications, Ltd.
Reference10 articles.
1. J. Li, A.H. Lefebvre, Rollbuhler JR. Effervescent atomizers for small gas turbines. American Society of Mechanical Engineers, 94-GT-495, 1994. 1-6.
2. M. Ochowiak, L. Broniarz-Press, S. Rozanska, J. Rozanski, S. Woziwodzki. The experimental analysis of the polyacrylamide solutions effervescent atomization. Procedia Engineering 2012(42)1849–54.
3. J.J. Sutherland, P.E. Sojka, Plesniak MW. Ligament controlled effervescent atomization. Atomization Sprays 1997; 7(4): 383-406.
4. Liansheng Liu, Jinxiang Wu, Zhenxing Han, et al. Atomization characteristics of effervescent nozzle at different liquid behaviors. Journal of Thermal Science and Technology, 2002(1)2: 128-132.
5. M. Ochowiak. The effervescent atomization of oil-in-water emulsions. Chemical Engineering and Processing 52 (2012) 92–101.