Turbulent Boundary layer thickness on a flat plate

AI Thread Summary
The discussion centers on the turbulent boundary layer thickness on a flat plate, highlighting confusion regarding the appropriate formula. The Schlichting formula, which states that δ = 0.37 X Re^{-0.2}, is mentioned as a reference but is absent in the latest 8th edition of Schlichting's "Boundary Layer Theory." Instead, the Hansen formula is presented, which involves a more complex relationship with Reynolds number. The original poster offers to share the derivation of the Schlichting formula if needed. This exchange emphasizes the evolution of boundary layer theory and the importance of updated resources.
Mitra
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I am really confused. Would you please tell me what the turbulent boundary layer thickness is on a flat plate?

There is a well-known Schlichting formula in the previous editions of his book “boundary layer theory”, which is:

\delta = 0.37 X Re^{-0.2}

But actually I could not find this relationship in his 8th edition book, instead I found the Hansen Formula, which is:

\frac {\delta U}{\nu} = 0.14 \frac{Re}{\ln Re} G(\ln Re)
 
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Well I have the complete derivation for the Schlichting formula for the turbulent boundary layer.
If you need it, just ask. my e-mail id is waqaskhan200@yahoo.com
 
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