The Galerkin finite element method is used to solve the three dimensional continuity, momentum and energy equations for laminar Newtonian and power-law model non-Newtonian flow through horizontal circular tube. The governing equations are non-dimensionalized with respect to specific variables and converted into algebraic equations using appropriate elements. To accelerate convergence a combinat...

The Galerkin finite element method is used to solve the three dimensional continuity, momentum and energy equations for laminar Newtonian and power-law model non-Newtonian flow through horizontal circular tube. The governing equations are non-dimensionalized with respect to specific variables and converted into algebraic equations using appropriate elements. To accelerate convergence a combinat...

An integral analysis of hydrodynamics and heat transfer in a thin liquid film flowing over a rotating disk surface is presented for both constant temperature and constant heat flux boundary conditions. The model is found to capture the correct trends of the liquid film thickness variation over the disk surface and compare reasonably well with experimental results over the range of Reynolds and ...

Haney-type surface thermal boundary conditions linearly connect net downward surface heat flux Q to air– sea temperature difference (gradient-type condition) DT1 or to climate/synoptic sea temperature difference (restoring-type condition) DT2 by a coupling coefficient k. In this study, the authors used the global reanalyzed data (6-h resolution) of Q, surface air temperature TA, and sea surface...

In the design of heat exchangers, it is necessary to determine the heat transfer rate between hot and cold fluids in order to calculate the overall heat transfer coefficient and the heat exchanger efficiency. Heat transfer rate can be determined by inverse methods. In this study, the unknown space-time dependent heat flux imposed on the wall of a heat exchanger internal tube is estimated by app...

The three-dimensional instability of the thermocapillary convection in cylindrical undeformable floating zones heated laterally is studied numerically. Different types of the boundary conditions, including radiation heating, linearized radiation and prescribed heat flux are used in the calculation. Stability diagrams showing the Prandtl number dependence of the critical Marangoni numbers that r...

W e present an operational two-source (soil+vegetation) ,ugdel for evaluating the surface energy balance given measurements of the time rate of change in radiometric surface temperature (TRao) during the ~u~rning hours. This model consists of a two-source surface component describing the relation between T~o and sensible heat flux, coupled with a time-integrated component connecting surface sen...

This paper presents the development and application ofa test method to determine thermal resistance of a material under transient conditions. The method consists oftesting two material slabs placed in contact with one another, one of them being a reference material with known dependence of thermal conductivity and heat capacity on temperature and the other being a test specimen whose thermal pr...

A T-S volumetric census, with a resolution of 0.2°C and 0.1 psu, for years 20-25 of the World Ocean Circulation Experiment Community Modeling Effort eddy-resolving simulation of the equatorial and North Atlantic Ocean, reveals how the thermohalipe character of the model has changed from the initial conditions, which were taken from the Levitus climatology. Any changes in the thermohaline struct...