Thin viscous region adjacent to a solid surface where velocity transitions from no-slip to free-stream; governed by Prandtl's equations; scales as δ ~ (νx/U)^{1/2}.
Thin viscous region adjacent to a solid surface where velocity transitions from no-slip to free-stream; governed by Prandtl's equations; scales as δ ~ (νx/U)^{1/2}.