Showing papers in "International Communications in Heat and Mass Transfer in 2006"

TL;DR: In this article, a comparison between experimental results obtained for nanofluid to homogeneous model in low concentration are close to each other but by increasing the volume fraction, higher heat transfer enhancement for Al 2 O 3 ǫ/ǫ water can be observed.

TL;DR: In this paper, the effects of Rayleigh number (Ra) and aspect ratio (AR) on the flow pattern and energy transport within the thermal boundary layer were investigated for various pertinent parameters.

TL;DR: In this paper, a double pipe heat exchanger fitted with regularly spaced twisted tape elements was investigated and the results from each case were correlated for Nusselt number and friction factor.

TL;DR: In this paper, the homotopy perturbation method was used to solve an unsteady nonlinear convective-radiative equation and a nonlinear conduction equation containing two small parameters of e1 and e2.

TL;DR: In this paper, the heat transfer characteristics and the pressure drop in the horizontal double pipes with twisted tape insert are investigated, and the results obtained from the tube with twisted insert are compared with those without twisted tape.

TL;DR: In this article, the heat transfer characteristics and the pressure drop of the horizontal double pipe with coil-wire insert are investigated, where the inner and outer diameters of the inner tube are 8.92 and 9.52 mm respectively.

TL;DR: In this article, the authors focused on the study of coupled heat and mass transfer by boundary-layer free convection over a vertical flat plate embedded in a fluid-saturated porous medium.

TL;DR: In this article, the effects of V-nozzle inserts on heat transfer and friction characteristics in a uniform heat flux tube are experimentally studied and the results of experimental investigations of heat transfer, friction characteristic and enhancement efficiency are presented.

TL;DR: In this paper, the authors have analyzed natural convection heat transfer in a triangle enclosure with flush mounted heater on vertical wall using finite difference method in solution of governing equations in stream function-vorticity form and linear algebraic equations were solved via Successive Under Relaxation (SUR).

TL;DR: In this article, the authors analyzed the heat transfer under the influence of radiation and viscous dissipation in a square cavity filled with saturated porous medium and found that the average Nusselt number at hot and cold wall increases with an increase in radiation parameter.

TL;DR: In this paper, the effect of radiation and natural convection in a saturated porous medium embedded in a vertical annular cylinder has been investigated, and the influence of aspect ratio (A) and radius ratio (R) on Nusselt number is presented.

TL;DR: In this article, the shape and arrangement of the absorber surfaces of the collectors were reorganised to provide better heat transfer surfaces suitable for the passive heat transfer augmentation techniques, and the performance of such solar air collectors with staggered absorber sheets and attached fins on absorber surface were tested.

TL;DR: In this paper, a large eddy simulation was conducted using one of standard numerical models for a porous medium, namely, a flow through a periodic array of square cylinders, and the LES results were processed to extract macroscopic results such as the macro-scopic turbulent kinetic energy and the macro scopic pressure gradient.

TL;DR: In this article, a theoretical model of the air-standard SI engine with temperature dependent specific heat has been implemented and compared to that which uses constant temperature specific heat, in most cases there were significant variations between the results obtained by using temperature-dependent specific heat with those obtained at constant specific heat.

TL;DR: In this paper, the effect of the initial liquid superheats of the PCM on the solidification of an n-hexadecane inside a spherical enclosure is investigated.

TL;DR: In this article, the authors performed numerical studies of flow and heat transfer in a circular tube under pulsating flow condition in the laminar regime, where the flow at the inlet consists of a fixed part and a pulsating component, which varies sinusoidally in time.

TL;DR: In this paper, the authors investigated non-Darcy flow and heat transfer in an annulus with high porosity aluminum foams to attain the miniaturization of thermal systems and found that aluminum foam enhances heat transfer from a surface compared with that of laminar flow in a clear annulus.

TL;DR: The unsteady non-Newtonian blood flow and mass transfer in symmetric and non-symmetric stenotic arteries are numerically simulated considering the fluid-structure interaction (FSI) using the code ADINA to obtain realistic hemodynamic results in stenosis.

TL;DR: In this article, the burning characteristics of pulverized coal in blowpipe and tuyere at two different injection patterns are simulated numerically, to aid improving the practical performance of blast furnace.

TL;DR: In this article, a numerical work was performed to analyze combined convection heat transfer and fluid flow in a partially heated porous lid-driven enclosure, where the top wall of enclosure moves from left to right with constant velocity and temperature.

TL;DR: In this article, an analytical solution of the hyperbolic heat conduction equation for the case of a thin slab symmetrically heated on both sides is presented, where the heating is treated as an internal heat source with capacity dependent on coordinate and time, while walls of the slab are assumed to be insulated.

TL;DR: In this article, the effect of internal aluminum fin with a star-shape cross-section on the heat transfer enhancement and pressure drop in a counterflow heat exchanger was investigated, and the results showed that a straight-fin configuration is the best to produce a heat transfer increase in a Counterflow Heat Exchanger.

TL;DR: In this article, an effective approach for the optimization of machining parameters to an injection-molded part with a thin shell feature (example of cell phone shell consist of PC/ABS material) based on the orthogonal array with the grey relational analysis and fuzzy logic analysis was presented.

TL;DR: In this paper, the effects of step heights, step lengths and Reynolds numbers on heat transfer and fluid flow were investigated as main parameters. And the authors showed that the second step can be used as a control device for both heat transfer this paper.

TL;DR: In this article, the effect of aspect ratios ranging from 0.25 to 1.0 and Rayleigh numbers 50 ≤Ra ≤1000 is investigated as governing parameters on heat transfer and flow field.

TL;DR: In this article, an artificial neural network (ANN) was trained using the experimental data to predict the air conditions at the outlet of a wire-on-tube type heat exchanger using neural networks.

TL;DR: In this paper, the problem of free convection from a vertical wavy surface embedded in a uniform porous medium in the presence of an external magnetic field and internal heat generation or absorption effects is formulated.

TL;DR: In this article, an effective procedure of response surface methodology (RSM) has been successfully developed finding the optimal values of designing parameters of a pin-fin type heat sink (PFHS) under constrains of mass and space limitation to achieve the high thermal performance.

TL;DR: In this article, a dynamic model for evaluating the transient thermal and moisture transfer behavior in porous building materials was presented, where both heat and moisture transferred were simultaneously considered and their interactions were modeled.

TL;DR: In this article, the simulation of free convection heat transfer and fluid flow in a horizontal and shallow wavy enclosure was performed in terms of streamlines, isotherms and Nusselt number for different aspect ratios, non-dimensional wave length and Rayleigh number.