Russo, F.; Basse, N.T. Scaling of turbulence intensity for low-speed flow in smooth pipes. Flow Meas. Instrum. 2016, 52, 101-114. [OpenAIRE]
 Basse, N.T. Turbulence intensity and the friction factor for smoothand rough-wall pipe flow. Fluids 2017, 2, 30.
 Hultmark, M.; Vallikivi, M.; Bailey, S.C.C.; Smits, A.J. Logarithmic scaling of turbulence in smooth- and rough-wall pipe flow. J. Fluid Mech. 2013, 728, 376-395. [OpenAIRE]
 Princeton Superpipe. Available https://smits.princeton.edu/superpipe-turbulence-data (accessed on 17 January 2018).
 ANSYS Fluent User's Guide, Release 18.2, Section 126.96.36.199.3, 2017.
 Marusic, I.; Kunkel, G.J. Streamwise turbulence intensity formulation for flat-plate boundary layers. Phys. Fluids 2003, 15, 2461-2464. [OpenAIRE]
 Alfredsson, P.H.; O¨ rlu¨, R.; Segalini, A. A new formulation for the streamwise turbulence intensity distribution in wall-bounded turbulent flows. Eur. J. Mech. B Fluids 2012, 36, 167-175.
 Monkewitz, P.A.; Nagib, H.M. Large-Reynolds number asymptotics of the streamwise normal stress in zero-pressure-gradient turbulent boundary layers. J. Fluid Mech. 2015, 783, 474-503. [OpenAIRE]
 Orlandi, P. The importance of wall-normal Reynolds stress in turbulent rough channel flows. Phys. Fluids 2013, 25, 110813.
 Fukagata, K.; Iwamoto, K.; Kasagi, N. Contribution of Reynolds stress distribution to the skin friction in wall-bounded flows. Phys. Fluids. 2002, 14, L73-L76. [OpenAIRE]
 Zagarola, A; Smits, A.J. Mean-flow scaling of turbulent pipe flow. J. Fluid Mech. 1998, 373, 33-79. [OpenAIRE]
 Langelandsvik, L.I.; Kunkel, G.J.; Smits, A.J. Flow in a commercial steel pipe. J. Fluid Mech. 2008, 595, 323-339.
 Pope, S.B. Turbulent flows; Cambridge University Press: Cambridge, UK, 2000.
 McKeon, B.J.; Zagarola, M.V.; Smits, A.J. A new friction factor relationship for fully developed pipe flow. J. Fluid Mech. 2005, 538, 429-443. [OpenAIRE]
 Colebrook, C.F. Turbulent flow in pipes, with particular reference to the transition region between the smooth and rough pipe laws. J. Inst. Civil Engrs. 1939, 11, 133-156. [OpenAIRE]