The boundary layer thickness for turbulent flow at a distance x with Reynolds number Rex is δ. Which is____(a) Directly proportional to \(\sqrt[5]{x}\)(b) Inversely proportional to \(\sqrt[5]{Re_x}\)(c) Directly proportional to Rex(d) Inversely proportional to xThis question was addressed to me in my homework.My query is from Turbulent Flow in division Incompressible Flow over Airfoils of Aerodynamics

The boundary layer thickness for turbulent flow at a distance x with R

1.	The boundary layer thickness for turbulent flow at a distance x with Reynolds number Rex is δ. Which is____(a) Directly proportional to \(\sqrt[5]{x}\)(b) Inversely proportional to \(\sqrt[5]{Re_x}\)(c) Directly proportional to Rex(d) Inversely proportional to xThis question was addressed to me in my homework.My query is from Turbulent Flow in division Incompressible Flow over Airfoils of Aerodynamics
Answer» Right choice is (b) Inversely proportional to \(\sqrt[5]{Re_x}\) EASY explanation: The boundary layer THICKNESS for an incompressible, turbulent FLOW over a FLAT plate, at a distance x where Reynolds number is Rex is given by δ=\(\frac {0.37x}{\sqrt[5]{Re_c}}\). Thus, the thickness is indirectly proportional to \(\sqrt[5]{Re_x}\).

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