Hello Prasanth,
I had made some changes in the emitter and the pop sim and its works well for me
1) i changed the sphere into a semisphere (in reality its like a sprayer so i used semisphere as one side emitter)
2) created a vel using the semisphere
3)jitter birth time to positive and interpolation method to match topology (**** highly recommend you to use match topology when the geometry points and the emitter points before sim are same ******) and added some variance in velocity
i hope it might help for you, if you have any doubts please reach me out
Have a nice Day ap_Color_Smoke_nagoor_version.hipnc