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Review of explicit approximations to the Colebrook relation for flow frictionDejan Brkić
To cite this version:Dejan Brkić. (2010) and Vatankhah and Kouchakzadeh (2008, 2009). They are very accurate. Therefore, I have added these two approximations...3. I agree with you that problem of range of applicability of certain approximation is very important. This problem is very complex. So to avoid any further speculations I have added diagram of accuracy of each approximation over the entire practical range of Reynolds number and relative roughness. According to these diagrams, one can choose will he/she use in certain case this particular approximation or not.4. Detailed discussion with results is now presented in more appropriate way.
Conclusion is now rearranged after your suggestions.