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Aim of this study is to evaluate a zero-equation turbulence model for fully-developed turbulent pipe flow with heat transfer. Uncertainty is approximated through grid-independence and model validation. Results for mean axial velocity, Reynolds stress and temperature had maximum error of 5%, while results for the friction factor and Nusselt number had negligible error. Both the mean axial velocity and normalized temperature profiles were shown to increase and extend farther in the outer layer with increasing Reynolds number, up to 10 6 . The new turbulence model is equally applicable to developing and external flows using the same constant. For wall-bounded flows, the constant is a function of wall roughness.

Fully-developed Turbulent Pipe Flow with Heat Transfer Using a Zero-equation Model