Showing papers in "International Communications in Heat and Mass Transfer in 2003"

TL;DR: In this article, analytical solutions for heat and mass transfer by laminar flow of a Newtonian, viscous, electrically conducting and heat generating/absorbing fluid on a continuously moving vertical permeable surface in the presence of a magnetic field and a first-order chemical reaction are reported.

TL;DR: In this article, the authors present results of an experimental investigation of heat transfer and friction in rectangular ducts with repeated rectangular cross-section ribs on one broad wall in transverse, inclined, v-continuous and v-discrete pattern.

TL;DR: In this article, a simple model for heating and evaporation of non-isothermal droplets is suggested, based on the parabolic approximation of the temperature profiles inside droplets.

TL;DR: In this article, an automotive air conditioning system is investigated in detail and experimented, the temperature of ambient, the evaporator and condenser and the speed of the compressor are varied and the performance of the system is analyzed.

TL;DR: In this article, the heat transfer characteristics and the performance of flat plate solar air heaters are studied numerically and the mathematical models are solved by the explicit method of finite-difference scheme.

TL;DR: In this paper, an experimental investigation of condensation heat transfer of alternative refrigerant R-134a flowing inside a helical pipe with cooling water through the concentric annular passage in a counter-flow direction is presented.

TL;DR: In this article, the authors present derivations of mass transport equations for turbulent flow in permeable structures using two distinct procedures: time averaging of the local instantaneous mass transport equation before the volume average operator is applied.

TL;DR: In this article, an experiment has been conducted to study flow boiling heat transfer of water in horizontal silicon microchannels heated from below, where various modes of boiling instability occur after the incipient boiling.

TL;DR: In this article, the two-phase heat transfer coefficients of pure HFC-134a condensing inside horizontal smooth and micro-fin tubes are experimentally investigated at high mass flux conditions.

TL;DR: In this paper, the volume-average mathematical operator on the buoyancy term in the flow equations governing turbulent flow was applied and derived under the recently established doubledecomposition concept.

TL;DR: In this paper, an inverse analysis is employed to determine the boundary conditions in 3D enclosures that will provide both the specified radiative heat flux and temperature distribution on the design surface of the enclosure containing transparent or absorbing-emitting media.

TL;DR: In this article, a computational model of thermal interactions between a human and the interior environment is presented, based on the heat balance equation for human body with different types of clothing ensembles, combined with empirical equations defining the sweat rate and mean skin temperature.

TL;DR: In this article, closed form expressions for the effectiveness-NTU relations are derived for triple concentric-tube heat exchangers including both counter-flow and parallel-flow arrangements, and some representative data for both types of flow arrangements are presented in graphical form.

TL;DR: In this article, a fractal transplane permeability model for textile fabrics was developed based on the fact that sizes of pores in porous fiber preforms follow the fractal distribution, which can be expressed as a function of the pore area fractal dimension and architectural parameters of the fiber preform.

TL;DR: In this paper, a finite difference method was used to solve the transient equation of heat transfer in perfused tumor tissue with a blood vessel in cylindrical coordinates, and the thermal dose distribution was determined by the formulation proposed by Sapareto and Dewey.

TL;DR: The work clearly demonstrates the adequacy of the ACFD approach and it appears to be an attractive option in the analysis of such multi-mode problems in heat transfer.

TL;DR: In this article, the fractal dimension of wall roughness in microchannels fabricated at different etching conditions is found to be in the range from 1.02 to 1.69.

TL;DR: In this article, a single baffle placed at the inlet of a rectangular channel was found to affect heat transfer and friction characteristics, and the average Nusselt number and friction factor increased with the decreasing clearance ratio and the increasing baffle angle.

TL;DR: In this paper, both injection molding and injection compression molding were applied in the manufacturing of a wedge-shaped light guide, and the relationship between the process parameters and the product shrinkage was investigated.

TL;DR: In this article, a mathematical model to describe simultaneous heat, moisture and gas migration in porous media, the idea of enhancing convective heat transfer by the synergy between velocity and temperature gradient is applied.

TL;DR: In this paper, the effect of shrinkage on predictions of the drying rate and product surface temperature using a one dimensional liquid diffusion model is investigated and it is shown that literature values of the moisture diffusivity do not take into account the thickness change during drying and hence predictions using the realistic physical shrinkage lead to incorrect estimates of the dry rate.

TL;DR: A new scheme, the Discrete Ordinate Scheme with (an) Infinitely Small Weight(s) (DOS+ISW), is proposed in order to remove the obstacle of fixed discrete directions in discrete ordinate schemes.

TL;DR: The influence of combined free and forced convection in a vertical shrouded fin is considered in this paper, where the Nusselt number, Nu and friction factor multiplied by Reynolds number fRe, are functions of the buoyancy force which is associated strongly with the geometry of the shrouded fin.

TL;DR: In this article, the transient laminar natural convection in an inclined parallel-walled channel when the bottom wall is heated was investigated by direct numerical solution of the governing equations using the accurate projection method, PmIII.

TL;DR: In this paper, two solutions are presented to investigate fully developed laminar steady forced convection inside a circular tube filled with saturated porous medium and with uniform heat flux at the wall on the basis of a Brinkman model.

TL;DR: Similarity solution for the problem of free convection boundary layers over a non-isothermal two dimensional or axisymmetric body which is embedded in a porous medium with internal heat generation is presented in this article.

TL;DR: In this paper, the authors studied the spray absorption method for the absorption of ammonia refrigerant vapour by lithium nitrate ammonia solutions and showed that a mass transfer coefficient equal to k m = 18.6.

TL;DR: In this paper, a thermal property detector for determining thermal properties of various soils has been developed and its details are presented in this paper, where the efficiency of this device has been established by comparing the results obtained by using the response of the laboratory thermal probe (single probe method).

TL;DR: In this article, an attempt has been made to evaluate the conveetive beat transfer coeffieient operating in crop drying in open sun drying conditions (natural convection). Values of the constant.