Showing papers in "International Journal of Heat and Mass Transfer in 1991"

TL;DR: The authors showed that the eonvective term in the correlation should have a Prandtl number dependence and constructed an accurate predictive method with an explicit nucleate boiling term and without boiling number dependence.

TL;DR: In this article, a high-resolution, finite difference numerical study is reported on three-dimensional steady-state natural convection of air, for the Rayleigh number range 103⩽ Ra ⩽ 106, in a cubical enclosure, which is heated differentially at two vertical side walls.

TL;DR: In this paper, a three-dimensional formulation is presented to solve inverse heat conduction as a general optimization problem by applying the adjoint equation approach coupled to the conjugate gradient algorithm.

TL;DR: In this article, the heat transfer characteristics of microencapsulated phase change material slurry flow in circular ducts are presented by taking into consideration both the heat absorption (or release) due to the phase change process and the conductivity enhancement induced by the motion of the particles.

TL;DR: In this article, the laminar and turbulent flow in a two-dimensional square cavity heated from the vertical side is numerically calculated up to a Rayleigh number of 1014 for air and up to 1015 for water.

TL;DR: In this paper, the evaporation of a small liquid droplet impinging on a hot stainless steel plate is investigated and a strobe-video visual system is used to record the transient process and to measure the droplet lifetime.

TL;DR: Similarity solutions for buoyancy induced heat and mass transfer from a vertical plate embedded in a saturated porous medium are reported for constant wall temperature and concentration, constant wall heat and flux.

TL;DR: In this paper, the influence of inlet geometry on the degree of stratification attainable in thermocline thermal energy storage is investigated using a mixing index introduced in a one-dimensional flow model.

TL;DR: In this paper, a direct numerical simulation of fully developed turbulent channel flow is used to study fully developed passive heat transfer between the channel walls, and the time-dependent, three-dimensional Navier-Stokes equation and the advection-diffusion equation are solved numerically with 1064960 grid points.

TL;DR: An introduction to computing with neural networks is presented and it is shown that neural networks can be used to adequately correlate heat transfer data.

TL;DR: In this article, the rib-roughened channel models the internal cooling passages in modern gas turbine airfoils, and the angles of attack of the V-shaped rib arrays are 45°, 60°, 90° (same as 90° full ribs), 120°, and 135°.

TL;DR: In this paper, an experimental investigation is performed to characterize the convective heat transfer from a flat surface to a row of impinging, circular, submerged air jets formed by square-edged orifices having a length/diameter ratio of unity.

TL;DR: In this article, the effects of mass flux, spray droplet velocity, droplet diameter, and distance between nozzle and heat source were investigated for horizontal spray cooling on vertical constant heat flux surfaces with subcooled Freon-113.

TL;DR: In this paper, the formation of frost on parallel horizontal plates facing a forced air stream is studied at varying temperatures, relative humidities and air velocities, both the surface temperature of the plates and the relative humidity of the air stream are found to have important effects for the frost thickness.

TL;DR: In this article, the performance of a thermal energy storage module is simulated numerically and the change of phase of the phase change material (PCM) and the transient forced convective heat transfer for the transfer fluid with low Prandtl numbers are solved simultaneously as a conjugate problem.

TL;DR: In this paper, an analytical study is conducted to determine the thermal response of a widely used ablative glass-filled polymer composite, which does not include the idealized assumption of local-thermal equilibrium existing between the solid matrix and decomposition gases within the tortuous pore network of the material.

TL;DR: In this article, the Monte Carlo method is used to examine the thermal radiative transfer through packed beds of large (geometric range) particles, and the results are compared to the independent theory and to the available experimental results.

TL;DR: In this article, a new set of equations describing the growth and evaporation of small liquid droplets in a pure vapour are presented, which model both mass and heat transfer between the droplet and the vapour, and are suitable for practical calculations at any Knudsen number.

TL;DR: In this paper, the authors examined the discrete ordinates method (DOM) for coupled radiative and conductive heat transfer in rectangular enclosures in which either a non-scattering or scattering medium is included.

TL;DR: In this article, the authors simulated natural convection heating of a canned liquid food during sterilization by solving the governing equations for continuity, momentum and energy conservation for an axisymmetric case, using a finite element code.

TL;DR: In this paper, the authors investigate boiling heat transfer from a smooth 12.7 mm × 12. 7 mm heat source to a jet of dielectric Fluorinert FC-72 liquid issued from a thin rectangular orifice into a channel confined between the surfaces of the heat source and the nozzle.

TL;DR: In this paper, a thermal conductance thickness probe and fast response thermocouples are used to measure the heat transfer properties of a wavy liquid film and the relationship between film thickness and liquid temperature at various film Reynolds numbers and heat fluxes.

TL;DR: In this article, hydrodynamic resonance and its effect on heat transfer in laminar flows through ducts with periodically spaced transverse grooves cut into one wall are presented.

TL;DR: In this paper, the authors investigated the heat transfer in a discretely heated enclosure for single and multiple heater configurations and found that the heat source location corresponding to maximum heat transfer is a function of Grashof number.

TL;DR: In this article, a numerical investigation of natural convective heat transfer of a fluid in vertical cylindrical annuli with the inner wall maintained at a higher temperature than the outer wall has been earned out.

TL;DR: In this paper, the Taylor series expansions for the eddy diffusivity and the turbulent Prandtl number (T) in the near-wall region of a turbulent channel flow were investigated.

TL;DR: In this article, an examination of heat transfer between two parallel plates due to electroconvection is presented, showing that the electrical effects dominate totally over buoyancy effects for all cases considered.

TL;DR: In this article, surface temperature and heat flux distributions have been measured on a flat, upward facing, constant heat flux surface cooled by a planar, impinging water jet, and the results for the stagnation and boundary layer flows are correlated by expressions of the form Nu = CRenPrm.

TL;DR: In this paper, the effect of corona discharge on forced-convection heat transfer in a tube is studied experimentally, and it is found that heat transfer enhancements are significant only in the laminar and transitional flow regimes when using a single electrode.

TL;DR: In this article, the authors used a continuum model for conservation of total mass, momentum, energy and species of a binary metal alloy (Pb-Sn) undergoing solidification phase-change.