Nozzle spray angle...

[jondee86]

I am looking at possible injector locations and would like to set the nozzles
so that there is no projection into the airflow, and have the tip of the
nozzle recessed 2-3 mm as per this drawing...



So if someone can advise me the injector spray cone included angle, I can
look at how this setup can be achieved on 1.6-2.0 mm wall alloy tube.

Also, I have seen some data that suggests recessing the tip promotes
better vapourisation, and I would appreciate any input indicating that this
is a worthwhile exercise.

Cheers... jondee86

PS: I do recall seeing a post that mentioned the cone angle was 80 deg,
but I have been unable to locate that again.