Turbulent boundary layer thickness Calculator

The thickness of a turbulent boundary layer can be estimated using the empirical relationship known as the “Prandtl’s mixing length theory.” According to this theory, the thickness ($\delta$) of a turbulent boundary layer is often expressed as:

Where:

• $\delta$ is the thickness of the turbulent boundary layer.
• $x$ is the distance along the surface.
• Rex​ is the Reynolds number based on distance $x$.