Results 231 to 240 of about 9,644,141 (271)

Isoflux Nusselt Number and Slip Length Formulae for Superhydrophobic Microchannels

, 2014
We analytically and numerically consider the hydrodynamic and thermal transport behavior of fully developed laminar flow through a superhydrophobic (SH) parallel-plate channel. Hydrodynamic slip length, thermal slip length and heat flux are prescribed at
R. Enright, M. Hodes, T. Salamon, Y. Muzychka   +3 more
semanticscholar   +1 more source

The Effect on the Nusselt Number of the Nonlinear Axial Temperature Distribution of Gas Flows Through Microtubes

, 2014
The characteristics of nitrogen convective heat transfer through commercial stainless-steel microtubes with inner diameters of 0.172 mm and 0.750 mm are investigated both experimentally and numerically. An analysis of the total uncertainty on the Nusselt
Yahui Yang, H. Chalabi, M. Lorenzini, G. Morini   +3 more
semanticscholar   +1 more source

Nusselt number for convection driven by tidal and radiogenic heating

Advances in Space Research, 2009
Abstract The ‘traditional’ formulas giving the Nusselt number Nu as a function of Rayleigh number Ra cannot be used for low and moderate values of Ra. Moreover, the recent progress in 3D numerical modeling makes possible to determine the Nusselt number Nu as a function of Rayleigh number Ra for convection driven by radiogenic and tidal heating.
openaire   +2 more sources

Static and dynamic measurements of the Nusselt number in turbulent convection

Physica Scripta, 2013
Measurements of the dimensionless heat transfer rate, or Nusselt number Nu, are typically made by static measurements of the heat flux and the average resulting temperature difference across a horizontal layer of fluid under steady state conditions. Here, we describe a dynamic method that uses the properties of a heat wave generated by sinusoidally ...
openaire   +2 more sources

Comparison of Nusselt number and stream function in tall and narrow enclosures in the mixed convection of hybrid nanofluid

Journal of Thermal Analysis and Calorimetry, 2020
Shu-Rong Yan, Rasool Kalbasi, A. Parvin, Xiao-Xiao Tian, A. Karimipour   +4 more
semanticscholar   +1 more source

Nusselt number for steady Poiseiulle flow through a pipe

Mechanics Research Communications, 1994
Abstract The efficiency of the heat transfer mechanism for the fully developed steady Poiseiulle flow of a viscus incompressible fluid through a pipe of uniform but arbitrary cross section, when the wall of the pipe is maintained at a constant temperature, is measured by the average Nusselt number Nu .
openaire   +2 more sources

Nußelt-Zahl Nu (Nusselt number Nu)

2000
Es handelt sich um eine dimensionslose Kennzahl im Sinne der Dimensionsanalysis. Sie wird haufig zur dimensionslosen Darstellung des Warmeuberganges in der Form Nu = Nu(⋯) benutzt und stellt in diesem Sinne eine Zielkennzahl dar (dimensionslose Form einer gesuchten Grose, hier der Wandwarmestromdichte).
openaire   +2 more sources

Consideration on Nusselt numbers of liquid metals flowing in tubes

Nuclear Engineering and Design, 2019
Abstract Representative experimental results for the heat transfer coefficients (HTCs) of liquid metals flowing in tubes under turbulent conditions are reviewed from the standpoint of experimental apparatuses, instrumentations and data derivation methods.
openaire   +2 more sources

Nusselt number and friction factor correlation of solar air heater having winglet type vortex generator over absorber plate

, 2020
Amit Kumar, A. Layek
semanticscholar   +1 more source

Friction factor and Nusselt number correlations for forced convection in helical tubes

, 2020
Houjian Zhao, Xiaowei Li, Ying Wu, Xin-xin Wu   +3 more
semanticscholar   +1 more source