Sharif Digital Repository

Transient and steady-state analysis of heat, mass, and momentum transfer in developing and fully-developed regions of homogeneous tubular reactors with non-Newtonian fluid flow

Author

Abbaszadeh Molaei, E.

Pub. Year

2013

Subjects

Tubular reactor. / Developing regions. / Power law fluid. / Transport phenomena. / Tubular reactors. / Unsteady state. / Flow of fluids. / Numerical analysis. / Momentum transfer.

Adsorption of xylene isomers on Na-BETA zeolite: Equilibrium in batch adsorber

Author

Molaei Dehkordi, A.

Pub. Year

2013

Subjects

Isotherm. / Langmuir model. / Na-BETA zeolite. / Adsorbers. / Heat of adsorption. / Langmuir isotherm models. / Langmuir models. / Liquid Phase. / M-Xylene. / O-xylene. / P-xylene. / Saturation Adsorption. / Xylene isomers. / Adsorption. / Adsorption isotherms. / Ethylbenzene. / Isomers. / Isotherms. / Sodium. / Xylene.

Transesterification of waste cooking oil to biodiesel using Ca and Zr mixed oxides as heterogeneous base catalysts

Author

Molaei Dehkordi, A.

Pub. Year

2012

Subjects

Mixed oxide catalyst. / Active catalyst. / BET method. / Bio-diesel fuel. / CaO-ZrO ₂. / Catalyst loadings. / Coprecipitation method. / Heterogeneous base catalyst. / Heterogeneous solid. / Mixed oxide. / Mixed oxide catalysts. / Molar ratio. / Solid catalysts. / Surface area measurement. / Waste cooking oil. / Biodiesel. / Calcium. / Loading. / Methanol. / Synthetic fuels. / Temperature programmed desorption. / Transesterification. / X ray diffraction. / X ray photoelectron spectroscopy. / Zirconium. / Zirconium alloys. / Catalyst activity.

The effect of dynamic strain aging on subsequent mechanical properties of dual-phase steels

Author

Molaei, M. J.

Pub. Year

2010

Subjects

Dual-phase steel. / Dynamic strain aging. / Fatigue Limit. / Fatigue strength. / Heat treatment cycle. / Martensite volume fraction. / Pre-strain. / Room temperature. / Temperature range. / Tensile specimens. / Tensile tests. / Total elongations. / Ultimate tensile strength. / Dynamics. / Fatigue of materials. / Low carbon steel. / Martensite. / Mechanical properties. / Strain. / Tensile strength. / Tensile testing. / Martensitic steel.

Transient and steady-state forced convection to power-law fluids in the thermal entrance region of circular ducts: Effects of viscous dissipation, variable viscosity, and axial conduction

Author

Molaei Dehkordi, A.

Pub. Year

2010

Subjects

Thermal entrance length. / Axial conduction. / Finite difference. / Power law fluid. / Thermal entrance. / Viscous dissipation. / Difference equations. / Fluids. / Heat flux. / Laminar flow. / Nusselt number. / Vehicular tunnels. / Viscosity. / Viscous flow. / Forced convection.

The effect of dynamic strain aging on fatigue properties of dual phase steels with different martensite morphology

Author

Molaei, M. J.

Pub. Year

2009

Subjects

Before and after. / DP-steel. / Dual-phase steel. / Dynamic strain aging. / Fatigue properties. / Fatigue strength. / Fatigue tests. / Intercritical annealing heat treatment. / Martensite morphology. / Room temperature. / Soft ferrite. / Soft phasis. / Tensile tests. / Tortuous path. / Total elongations. / Ultimate tensile strength. / Dynamic positioning. / Fatigue of materials. / Ferrites. / Morphology. / Percolation (solid state) / Tensile strength. / Tensile testing. / Martensite.

Experimental and modeling study of catalytic reaction of glucose isomerization: Kinetics and packed-bed dynamic modeling

Author

Molaei Dehkordi, A.

Pub. Year

2008

Subjects

Computer simulation. / Mathematical models. / Packed beds. / Transient analysis. / Dynamic-mathematical model. / Glucose isomerase. / Michaelis-Menten rate expression. / Enzymes. / Glucose. / Reaction kinetics.

Oxidative desulfurization of Non-hydrotreated kerosene using hydrogen peroxide and acetic acid

Author

Molaei Dehkordi, A.

Pub. Year

2009

Subjects

Oxidation. / Molar ratio. / Operating parameters. / Oxidative desulfurization. / Reaction temperature. / Refinery feedstock. / Sulfur Removal. / Total sulfur mass. / Acetic acid. / Acids. / Hydrogen. / Hydrogen peroxide. / Sulfur. / Desulfurization.

Population balance modeling of barium sulfate nanoparticle synthesis via inverse microemulsion including coagulation effect

Author

Vafa, E.

Pub. Year

2014

Subjects

Barium. / Coagulation. / Electrolytes. / Microemulsions. / Nanoparticles. / Particle size analysis. / Precipitation (chemical) / Bimodal particle size distribution. / Electrolyte concentration. / Inverse micro emulsion. / Inverse microemulsion system. / Mean particle diameter. / Nanoparticle synthesis. / Population balance equation. / Population balance modeling. / Synthesis (chemical)

Simply synthesized TiO2 nanorods as an effective scattering layer for quantum dot sensitized solar cells

Author

Samadpour, M.

Pub. Year

2014

Subjects

Light scattering. / Scattering. / Semiconductor quantum dots. / Solar cells. / Titanium. / Titanium dioxide. / Chemical oxidation. / Diffuse reflectance spectroscopy. / High power conversion. / Optimized structures. / Quantum dot. / Quantum dot-sensitized solar cells. / Scattering property. / Successive ionic layer adsorption and reactions. / Nanorods.

A novel model for predicting the dense phase behavior of 3D gas-solid fluidized beds

Author

Movahedirad, S.

Pub. Year

2014

Subjects

Discrete bubble model. / Bubble-bubble interaction. / Discrete bubble modeling. / Gas-solid fluidized bed. / Hydrodynamic behavior. / Mirror-image techniques. / Multi-phase reactor. / Positron emission particle tracking. / Time-averaged velocity. / Fluidized beds. / Forecasting. / Hydrodynamics. / Three dimensional.

Gas absorption enhancement in hollow fiber membrane contactors using nanofluids: Modeling and simulation

Author

Darabi, M.

Publisher

Elsevier B.V,

Pub. Year

2017

Subjects

Gas absorption enhancement. / Hollow fiber membrane contactor. / Mass-transfer coefficient. / Nanoparticles. / Brownian movement. / Carbon. / Carbon dioxide. / Gases. / Mass transfer. / Nanofluidics. / Silica. / Absorption enhancement. / Carbon dioxide absorption. / Gas absorption process. / Hollow fiber membrane contactors. / Mass transfer enhancement. / Nanoparticle concentrations. / Process intensification. / Silica nanoparticles. / Gas absorption.

Numerical simulation of a cubic spout-fluid bed: influences of inlet gas temperature and jet to bed cross-section ratio

Author

Rahmani, A.

Publisher

De Gruyter,

Pub. Year

2020

Subjects

inlet gas temperature. / jet to bed cross-section ratio. / spout-fluid bed. / Computational fluid dynamics. / Polypropylenes. / Sensitivity analysis. / Analysis of simulations. / Circulation patterns. / Discrete particle simulation. / Eulerian-Eulerian. / Higher gas temperature. / Inlet gas temperature. / Lower pressures. / Spout fluid beds. / Gases.

Markov model of drive-motor systems for reliability calculation

Author

Molaei, M.

Pub. Year

2006

Subjects

Drives. / Electric drives. / Industrial applications. / Industrial electronics. / Markov processes. / Motors. / Partial discharges. / Systems analysis. / Block diagrams. / Electrical drive. / Failure rates. / International symposium. / Markov model. / Markov modelling. / Motor system. / Motor systems. / Reliability assessments. / Reliability Block Diagram. / Reliability calculations. / Repair rates. / System availability. / System components. / System reliability. / Reliability.

Investigation on various types of ion-exchange membranes in vanadium redox flow batteries: Experiment and modeling

Author

Maghsoudy, S.

Publisher

Elsevier Ltd,

Pub. Year

2022

Subjects

Anion exchange membrane. / Cation exchange membrane. / Energy storage. / Mathematical model. / Vanadium redox flow battery. / Digital storage. / Electric conductivity. / Flow batteries. / Ion exchange. / Ohmic contacts. / Positive ions. / Vanadium. / Anion exchange. / Cation exchange membranes. / Electrical conductivity. / Exchange membranes. / Ion-exchange membrane. / Nafion 117. / Nafions. / Vanadium redox flow batteries. / Vanadium species. / Ion exchange membranes.

Micro arc oxidation of nano-crystalline Ag-doped TiO2 semiconductors

Author

Bayati, M. R.

Pub. Year

2011

Subjects

Absorption edges. / Anatase phase. / Crystalline size. / Diffraction angle. / Doped-TiO. / Doping. / Microarc. / Microarc oxidation. / Nano-structured layer. / Nanocrystallines. / Red shift. / Rutile phasis. / TiO. / Titania. / UV-Vis spectrophotometers. / XPS. / XRD. / Crystalline materials. / Oxidation. / Oxide minerals. / Semiconductor doping. / Titanium. / Titanium dioxide. / Silver.

A simple low pressure method for the synthesis of TiO2 nanotubes and nanofibers and their application in DSSCs

Author

Karimipour, M.

Publisher

Kluwer Academic Publishers,

Pub. Year

2015

Subjects

Anatase. / TiO2 nanotubes. / Crystal structure. / Dye-sensitized solar cells. / Electron transport properties. / Nanofibers. / Nanoparticles. / Nanorods. / Open circuit voltage. / Powders. / Scanning electron microscopy. / Temperature. / Titanium dioxide. / X ray diffraction analysis. / Yarn. / Electron transport. / hydrothermal. / Low pressure methods. / Low temperatures. / Morphology and crystal structures. / Scanning electrons. / Thermal methods. / TiO. / Nanotubes.

Effect of thermal wave propagation on thermoelastic behavior of functionally graded materials in a slab symmetrically surface heated using analytical modeling

Author

Molaei Najafabadi, M.

Pub. Year

2014

Subjects

B. High-temperature properties. / B. Thermal properties. / C. Analytical modeling. / B. Strength. / High-temperature environment. / Hyperbolic heat conduction equations. / Non-Fourier heat conduction. / Thermal energy transport. / Thermal wave propagation. / Thermo-elastic behavior. / Variation of Parameters. / Analytical models. / Design. / Fourier transforms. / Functionally graded materials. / Heat flux. / Relaxation time. / Stress concentration. / Temperature distribution. / Thermal stress. / Thermoelasticity. / Wave propagation. / Strength of materials.

Numerical investigation on the solid flow pattern in bubbling gas-solid fluidized beds: Effects of particle size and time averaging

Author

Askarishahi, M.

Pub. Year

2014

Subjects

Two-fluid model. / Bubble formation. / Computational fluid dynamics. / Finite volume method. / Flow of solids. / Fluidization. / Particle size. / Velocity. / Averaging time. / Bubbling fluidized bed. / Cartesian coordinate system. / Gas-solid fluidized bed. / Kinetic theory of granular flow. / Numerical investigations. / Flow patterns. / Accuracy. / Airflow. / Dispersion. / Fluidized bed. / Gas solid bubbling fluidized bed. / Hydrodynamics. / Prediction. / Reaction time. / Shear flow. / Shear stress. / Simulation. / Validation process.