Boundary Layer Thickness Calculator
Estimate laminar boundary layer thickness δ ≈ 5x/√Re.
Input Data
Distance
m
Reynolds
Results
δ = 5x/√Re_x.
0.015811m
At a glance:Laminar flat-plate: δ(x) ≈ 5x/√Re_x. Complements reynolds-number and darcy-friction.
Formula
δ ≈ 5x / √Re_x.
$$\delta = \dfrac{5\,x}{\sqrt{Re_x}}$$How to Use
- Enter distance and Reynolds.
- The tool returns thickness.
Case Studies
x=0.5, Re=1e5
δ ≈ 0.0079 m.
FAQ
Valid when?
For laminar flow (Re_x ≲ 5e5); after transition the formula changes.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.