Atomization quality of liquids has a great importance on the performance of combustion engines. In this study the internal flow phenome of pressure swirl atomizer is investigated by using numerical method. The design of swirl atomizer is performed based on the requested atomizer characteristics which are sauter mean diamer (SMD), spray cone angle and break up length. Prediction and understanding of liquid film dynamics in the atomizer inside are the fundamental ways to explore atomizer performance. The purpose of this study is to estimate the air core size and film thickness in pressure swirl atomizer by setting single phase numeric computations. This article concludes that the CFD validated swirl atomizer design can be achieved with the lower computational cost using stream function methodology.
[1]
L. Dodge.
Representation of average drop sizes in sprays
,
1987
.
[2]
W. Sirignano,et al.
Fluid Dynamics and Transport of Droplets and Sprays
,
1999
.
[3]
A. Lefebvre,et al.
Film thickness measurements in a simplex swirl atomizer
,
1986
.
[4]
Arthur H. Lefebvre,et al.
Internal flow characteristics of simplex swirl atomizers
,
1984
.
[5]
W. Sirignano.
Fluid Dynamics and Transport of Droplets and Sprays by William A. Sirignano
,
1999
.
[6]
Dennis Cooper,et al.
EXPERIMENTAL MEASUREMENTS AND COMPUTATIONAL PREDICTIONS OF THE INTERNAL FLOW FIELD IN A PRESSURE SWIRL ATOMIZER
,
1999
.