Review Note

What are physical differences between the incompressible and compressible BL? How does that affect the solution procedure?

In a compressible BL, fluid properties like density, viscosity, etc. can vary spatially
This leads to different governing equations, although the simplifying assumptions are largely the same
To account for fluid property variations, we define new and different similarity transformations

When solving, the momentum and thermal fields are strongly coupled through the density and therefore you end up usually solving coupled differential equations