Effect of Number of Inlet Tangential Ports and Their Angle …
145
Fig. 6 Effect of number of inlet tangential ports and their angle on liquid sheet breakup length
SW1. Higher port angle present in SW2 injector leads to higher azimuthal velocity
in swirl chamber resulting in higher breakup length.
3.2 Effect of Number of Inlet Tangential Port and Tangential
Angle on Spray Cone Angle
The spray cone angle is another important parameter to account for the efficient
atomization process. The effect of number of inlet tangential port on spray cone angle
and injection pressure is presented in Fig. 7. The trend of increasing cone angle with
increasing pressure is observed here. This observation matches well with literature
findings by Datta et al. [8] and Halder et al. [9]. Moreover, with the increase in
injection pressure, spray cone angle varies nearly linearly. This graph also represents
that spray formation becomes broader with increasing injection pressure. It is also
observed that for each injection pressure, SW3 injector configuration produced 39–
51% lesser spray cone angle compared to SW1 injector configuration. The effect of
inlet port tangential angle on spray cone angle is shown in Fig. 7. From this graph,
it is observed that for each injection pressure, SW2 injector configuration formed 1–
3% lesser spray cone angle compared to SW1 injector configuration. This is because
more number of inlet ports produces higher azimuthal velocity in swirl chamber
resulting in higher spray cone angle.
145
Fig. 6 Effect of number of inlet tangential ports and their angle on liquid sheet breakup length
SW1. Higher port angle present in SW2 injector leads to higher azimuthal velocity
in swirl chamber resulting in higher breakup length.
3.2 Effect of Number of Inlet Tangential Port and Tangential
Angle on Spray Cone Angle
The spray cone angle is another important parameter to account for the efficient
atomization process. The effect of number of inlet tangential port on spray cone angle
and injection pressure is presented in Fig. 7. The trend of increasing cone angle with
increasing pressure is observed here. This observation matches well with literature
findings by Datta et al. [8] and Halder et al. [9]. Moreover, with the increase in
injection pressure, spray cone angle varies nearly linearly. This graph also represents
that spray formation becomes broader with increasing injection pressure. It is also
observed that for each injection pressure, SW3 injector configuration produced 39–
51% lesser spray cone angle compared to SW1 injector configuration. The effect of
inlet port tangential angle on spray cone angle is shown in Fig. 7. From this graph,
it is observed that for each injection pressure, SW2 injector configuration formed 1–
3% lesser spray cone angle compared to SW1 injector configuration. This is because
more number of inlet ports produces higher azimuthal velocity in swirl chamber
resulting in higher spray cone angle.