Dittus-Boelter equation

Dittus-Boelter equation

[¦did·əs ¦bel·tər i‚kwā·zhən]
(fluid mechanics)
An equation used to calculate the surface coefficient of heat transfer for fluids in turbulent flow inside clean, round pipes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In the porous media model, the heat transfer coefficient, [h.sub.fs], between the fluid and the solid in the energy conservation equation was specified by the empirical Dittus-Boelter equation [19].
For laminar flow, the Nusselt number is Nu = 3.66, while for turbulent flow, the Nusselt number can be calculated by the Dittus-Boelter equation as:
For a single-phase flow, we use the Dittus-Boelter equation for the heat transfer coefficient [[alpha].sub.In] in the pipe.
The CFD analysis of Nusselt number for pure water inside flat tube was compared with Dittus-Boelter equation (9) for water inside circular tube was shown as black solid line.
Nus represents Nusselt number for smooth duct of a solar air heater and can be obtained by the Dittus-Boelter equation [22].
Heat transfer coefficient is calculated from a Dittus-Boelter equation (Perry, 1999).
(2002) for two-phase flow, enhanced tube Heat-transfer coefficient Dittus-Boelter equation (Shah 1979) for single-phase flow Goto et al.