Abstract:
The coefficient of heat transfer was calculated from the Lyon’s integral using a two-layer model (thermal sublayer and turbulent core flow). The model of Prandtl mixing length was employed for estimation of turbulent thermal conductivity. Under the accepted assumptions, the Lyon’s integral is written in a rather simple form. Its numerical resolution yielded the distribution of heat transfer coefficient over the parameter $\mathrm{Re}\sqrt{\mathrm{Pr}}$, which agrees well with Dittus–Boelter correlation for turbulent heat transfer.
Fulltext:
PDF file (111 kB)