Visualize boundary layer
 

Hi
I am relatively new to CFD and I am using Starr-CCM+ to analyse a Eco-Marathon vehicle body. I wanted to visualise how much of the boundary layer is laminar and how much of it is turbulent. Similar to the figures shown at 3.15 in this video https://www.youtube.com/watch?v=LNnr...utu.be&t=3m15s
Does anyone know which function in the scalar field would showcase the boundary layer on the surface of the body?
Any help would be much appreciated:)