Turbulent flow and heat transfer calculator
Compute friction factors, Nusselt numbers and mean velocity and temperature profiles for turbulent pipe and channel flows, using correlations trained on high-fidelity direct numerical simulation (DNS) data.
What ThermoTurb computes
ThermoTurb predicts the Darcy–Weisbach friction factor, skin-friction coefficient, Nusselt number, Stanton number and convective heat transfer coefficient for fully developed turbulent flow in circular pipes and plane channels, at any Reynolds number and Prandtl number. Beyond single coefficients, it also returns the complete mean velocity and temperature profiles across the duct.
Beyond Dittus–Boelter and Gnielinski
Classical correlations such as the Dittus–Boelter equation, the Gnielinski correlation and the Colebrook–White formula are fitted to experimental data of limited accuracy and range. ThermoTurb instead builds on composite profiles inferred from an extensive database of direct numerical simulations of turbulent flow and heat transfer, giving more accurate predictions of friction and heat transfer coefficients — including cases with temperature-dependent fluid properties, where standard power-law correlations lose accuracy.
Who it is for
The tool is aimed at engineers sizing heat exchangers, piping and cooling systems, researchers in fluid dynamics and convective heat transfer, and students learning about wall turbulence. See the features overview for supported flow configurations and thermal boundary conditions, or browse the peer-reviewed publications behind the tool.