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For a Reynolds number Rec=10×10^5 and chord length 1m, what is the turbulent boundary layer thickness at the trailing edge (in cm)?(a) 0.0216(b) 0.037(c) 2.16(d) 0.37I got this question in quiz.My enquiry is from Turbulent Flow in chapter Incompressible Flow over Airfoils of Aerodynamics

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Correct ANSWER is (c) 2.16

Easy explanation: The turbulent boundary layer thickness is given by δ=\(\frac {0.37x}{\sqrt[5]{Re_c}}\) where in our QUESTION X is the chord length. SOLVING this we get the thickness to be 2.16 CM or 0.0216m. Note that the answer is not 0.0216 since that is wrong in the required units.



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