Study for spray characteristic of an internal-mixing air atomizing nozzle

Author

Liuqing Xu ; Yuming Xing

Author_Institution

Sch. of Aeronaut. Sci. & Eng., Beihang Univ., Beijing, China

fYear

2011

fDate

19-22 Aug. 2011

Firstpage

2454

Lastpage

2457

Abstract

The spray characteristic of the internal-mixing atomizing nozzle with 8 jet orifices is investigated by Fluent. 1 jet orifice and adjacent 3 jet orifices are performed respectively as simplified model to do the numerical simulation of unsteady turbulent flow. To predict droplets atomization in the flow field, Continuous Phase is set by standard turbulent model and Discrete Phase Model (DPM) is applied with unsteady flowing in the software. The simulation results of 1 jet orifice model present the influence of Sauter Mean Diameter (SMD) when pressure and axial length change, discuss the trend of droplet size distribution as pressure arises and prove its rationality according to comparing with the simulation results of the 3 orifices model. Numerical prediction results correspond to experimental value well.

Keywords

jets; mixing; nozzles; orifices (mechanical); sprays; turbulence; Sauter mean diameter; continuous phase; discrete phase model; droplet size distribution; droplets atomization; flow field; internal-mixing air atomizing nozzle; jet orifice; numerical simulation; spray characteristic; turbulent model; unsteady turbulent flow; Atmospheric modeling; Educational institutions; Equations; Mathematical model; Numerical models; Orifices; Simulation; internal-mixing atomizing nozzle; numerical simulation; sauter mean diameter (SMD);

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronic Science, Electric Engineering and Computer (MEC), 2011 International Conference on

Conference_Location

Jilin

Print_ISBN

978-1-61284-719-1

Type

conf

DOI

10.1109/MEC.2011.6025989

Filename

6025989