Basic doubts in Turbulence.
 

Dear All,
I am a young student who starts to work on fluid dynamics and turbulence.
I came up with some question, I would really appreciate if you guys can help me out with (Yes/No) solution to my questions. In case you wanna explain maybe a line or two would be more than enough for me to be in match with your thoughts.
List of questions are:
1. The potential core of the supersonic jet increases with increasing Mach no. (Y/N)