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A BRIEF REVIEW OF SEVERAL NUMERICAL METHODS FOR ONE-DIMENSIONAL STEFAN PROBLEMS
moving boundary problem Stefan problems
2009/10/14
This paper describes and compares several effective methods for the numerical solution of one-dimensional Stefan problems. The intention is not to make an exhaustive review and so we restrict our atte...
ON HIGH-ORDER POLYNOMIAL HEAT-BALANCE INTEGRAL IMPLEMENTATIONS
heat balance integral high-order polynomial approximants
2009/10/14
This article reconsiders aspects of the analysis conventionally used to establish accuracy, performance and limitations of the heat balance integral method: theoretical and practical rates of converge...
IMPROVEMENT OF CAO-BASED SORBENT PERFORMANCE FOR CO2 LOOPING CYCLES
CO2 capture CaO-based sorbents looping cycles
2009/10/14
This paper presents research on CO2 capture by lime-based looping cycles. This is a new and promising technology that may help in mitigation of global warming and climate change caused primarily by th...
Investigation of the Mass Transfer Parameters of Caffeine Extraction in a Packed Column
Caeine Mass Transfer Liquid Extraction Packed Column
2009/10/14
In this study, the mass transfer parameters were investigated in the liquid extraction process, which is the main step of producing ca eine from tea residue, in a packed brosilicate glass column, 5.86...
COMPUTATIONAL ANALYSIS OF MHD FLOW, HEAT AND MASS TRANSFER IN TRAPEZOIDAL POROUS CAVITY
double diffusion porous media heat and mass transfer
2009/10/14
Numerical simulations are conducted for two-dimensional steady-state double diffusive flow in a trapezoidal porous cavity, submitted to axial magnetic field. The Darcy equation, including Brinkmamn an...
HEAT TRANSFER STUDIES ON SPIRAL PLATE HEAT EXCHANGER
spiral plate heat exchanger Reynolds number nusselt number
2009/10/14
In this paper, the heat transfer coefficients in a spiral plate heat exchanger are investigated. The test section consists of a plate of width 0.3150 m, thickness 0.001 m and mean hydraulic diameter o...
NUMERICAL STUDY OF COMBINED CONVECTION HEAT TRANSFER FOR THERMALLY DEVELOPING UPWARD FLOW IN A VERTICAL CYLINDER
numerical combined convection thermally developing flow finite difference
2009/10/14
The problem of the laminar upward mixed convection heat transfer for thermally developing air flow in the entrance region of a vertical circular cylinder under buoyancy effect and wall heat flux bound...
TWO-DIMENSIONAL MODELING OF WATER SPRAY COOLING IN SUPERHEATED STEAM
cooling water spray formation break up model
2009/10/14
Spray cooling of the superheated steam occurs with the interaction of many complex physical processes, such as initial droplet formation, collision, coalescence, secondary break up, evaporation, turbu...
ELEMENT FREE GALERKIN METHOD FOR TRANSIENT THERMAL ANALYSIS OF CARBON NANOTUBE COMPOSITES
carbon nanotube nano-composites continuum mechanics
2009/10/14
This paper deals with the transient thermal analysis of carbon nanotube composites via meshless element free Galerkin method. A three-dimensional representative volume element containing single nanotu...
EMPIRICAL CORRELATIONS TO PREDICT THERMOPHYSICAL AND HEAT TRANSFER CHARACTERISTICS OF NANOFLUIDS
nanofluids thermal conductivity heat transfer coefficient laminar
2009/10/14
Nanofluids exhibits larger thermal conductivity due to the presence of suspended nanosized solid particles in them such as Al2O3, Cu, CuO,TiO2, etc. Varieties of models have been proposed by several a...
Heat Transfer and Flow Structures Around Circular Cylinders in Cross-Flow
Heat Exchangers Effect of Blockage Cross-flow Tube Bundle
2009/10/14
An experimental study was carried out to investigate heat transfer and flow characteristics from one tube within a staggered tube bundle and within a row of similar tubes. The tube spacing examined St...
THERMODYNAMIC ANALYSIS OF HEAT RECOVERY STEAM GENERATOR IN COMBINED CYCLE POWER PLANT
combined cycle gas turbine steam cycle
2009/10/14
Combined cycle power plants play an important role in the present energy sector. The main challenge in designing a combined cycle power plant is proper utilization of gas turbine exhaust heat in the s...
EFFECTS OF HEAT SINK COMPOUNDS ON CONTACT RESISTANCE OF POROUS MEDIA
thermal conductivity thermal diffusivity bulk density
2009/10/14
High and low-conductivity heat sink compounds were applied in succession on a thermal probe, which was then used to determine the thermal conductivity and thermal diffusivity of some porous media at r...
PARAMETRIC STUDY OF THE HEAT TRANSFER COEFFICIENT IN BI-DIMENSIONAL SMOLDERING SIMULATION
smoldering fixed bed heat transfer porous medium finite volume method
2009/10/14
In this paper, we present the transient modeling results of 2-D forward smoldering in a cylindrical configuration filled with a foam porous material. The objective of the study is to explain the effec...
THE TRANSIENT RESPONSE FOR DIFFERENT TYPES OF ERODABLE SURFACE THERMOCOUPLES USING FINITE ELEMENT ANALYSIS
finite elements transient response different types erodable surface thermocouples
2009/10/14
The transient response of erodable surface thermocouples has been numerically assessed by using a two dimensional finite element analysis. Four types of base metal erodable surface thermocouples have ...