—A design procedure and performance evaluation of a flat-jet atomizer is described. The objective is to achieve a flat spray with minimum drop size and high performance for stipulated flow conditions. In the design process, the flat spray was formed by using in-line orifices and a rectangular outlet. The high spray performance was achieved by adopting the same working principle of a full-cone atomizer patented by Sadatomi & Kawahara (2012), which only needs pneumatic power, and the liquid can be sucked by siphoning force due to the negative pressure caused by the orifice. In the evaluation process of the new design, the influence of the outlet with different lengths and the orifice with different shapes on spray characteristics were studied, and the optimum dimension and geometry of the outlet and orifice were determined. Next, at different flow conditions, the flat-jet atomizer was experimentally tested and the suitable flow condition was proposed. Finally, practical applications of the new design (e.g. CO2 absorption) were recommended.
—Twin-fluid, flat-spray, siphon, outlet, orifice.
The authors are with the Department of Advanced Mechanical Systems, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan (e-mail: email@example.com, firstname.lastname@example.org. ac.jp, email@example.com, firstname.lastname@example.org. ac.jp).
Cite: J. F. Yao, K. Tanaka, A. Kawahara, and M. Sadatomi, "Design Procedure and Performance Evaluation of a Flat-Jet Twin-Fluid Atomizer by Siphoning Liquid," International Journal of Engineering and Technology vol. 7, no. 5, pp. 424-431, 2015.