Sharif Digital Repository

Modeling of multiple noncatalytic gas-solid reactions in a moving bed of porous pellets based on finite volume method

Author

Valipour, M. S.

Pub. Year

2007

Subjects

Finite volume method. / Mass transfer. / Mathematical models. / Packed beds. / Reaction kinetics. / Endothermic reactions. / Gas-solid reaction. / Multiple reactions. / Nonisothermal transient condition. / Porous materials.

Numerical investigation of nonisothermal reduction of hematite using Syngas: The shaft scale study

Author

Valipour, M. S.

Pub. Year

2007

Subjects

Carbon monoxide. / Mathematical models. / Reduction. / Synthesis gas. / Water vapor. / Cylindrical reactors. / Hematite pellets. / Nonisothermal reduction. / Reduction zone. / Unreacted shrinking core model (USCM) / Hematite.

A non-isothermal, transient model of a non-catalytic reaction in a packed bed with a multi-component high-temperature gas mixture

Author

Valipour, M. S.

Pub. Year

2005

Subjects

Finite volume. / Gas-solid reaction. / Gaseous species. / Governing equations. / Hematite pellets. / Heterogeneous reactions. / High temperature. / Moving packed bed. / Multicomponents. / Non-catalytic. / Nonisothermal. / Porous domain. / Thermal phenomena. / Transient model. / Transport of heat. / Catalysis. / Chemical reactors. / Computational fluid dynamics. / Heat transfer. / Iron ores. / Mathematical models. / Porous materials. / Packed beds.

Three-phase PFC rectifier with high efficiency and low cost for small PM synchronous wind generators

Author

Rezazadeh, G.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Permanent magnet synchronous generator. / Power factor correction rectifier. / AC-AC power converters. / Costs. / DC-DC converters. / Electric generators. / Electric power factor correction. / Electric rectifiers. / Magnets. / Permanent magnets. / Power electronics. / Rectifying circuits. / Synchronous generators. / Wind turbines. / Closed-loop simulations. / Permanent magnet synchronous generator. / Power electronic converters. / Power factor correction rectifier. / Power factor corrections. / SEPIC converter. / Synchronous inductance. / Wind generator systems. / Power converters.

Flicker-free electrolytic capacitor-less universal input offline LED driver with PFC

Author

Valipour, H.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Flicker-free. / Off-line LED driver. / One-and-a-half stage conversion. / Power factor correction (PFC) / Capacitors. / Cost reduction. / DC-DC converters. / Efficiency. / Electric power factor correction. / Electrolytic capacitors. / Light emitting diodes. / Lighting. / Reconfigurable hardware. / Electrolytic capacitor-less. / Flyback converters. / Flyback transformer. / LED drivers. / Lighting efficiency. / Lighting systems. / Power factor corrections. / Two stage circuits. / Power converters.

An efficient tabu search algorithm for the single row facility location problem [electronic resource] / Hamed Samarghandi, Kourosh Eshghi.

Author

Samarghandi, H. (Hamed).

Subjects

Facilities planning and design. / Linear ordering problem. / Tabu search. / Integerprogramming.

Sensitivity analysis of matching pennies game [electronic resource] / Hamed Yarmand, Kourosh Eshghi.

Author

Yarmand, H. (Hamed).

Subjects

Matching pennies game. / Two-person zero-sum games. / Sensitivity analysis of games.

Electrolytic capacitor-less AC-DC LED driver with constant output current and PFC

Author

Valipour, H.

Pub. Year

2015

Subjects

AC/DC LED drivers. / Flicker-free LED driver. / Light-emitting diode (LED) / Power factor correction (PFC) / Capacitors. / Cost reduction. / DC motors. / DC-DC converters. / Efficiency. / Electric power factor. / Electrolytic capacitors. / Lighting. / Power converters. / Power electronics. / Rectifying circuits. / Closed-loop simulations. / Electrolytic capacitor-less. / Flyback transformer. / LED drivers. / Lighting efficiency. / One-stage converters. / Power factor corrections. / Two-stage converter. / Light emitting diodes.

Mathematical modeling of the reaction in an iron ore pellet using a mixture of hydrogen, water vapor, carbon monoxide and carbon dioxide: An isothermal study

Author

Valipour, M. S.

Publisher

VSP BV,

Pub. Year

2006

Subjects

Carbon dioxide. / Carbon monoxide. / Grain boundaries. / Hydrogen. / Iron ore pellets. / Iron ore reduction. / Mathematical models. / Vapors. / Heterogeneous reaction. / Multi-species reducing gas. / Pellet reduction. / Thermal behaviors. / Reaction kinetics.

Reliability comparison of two industrial AC/DC converters with resonant and non-resonant topologies

Author

Valipour, H.

Pub. Year

2015

Subjects

AC/DC. / MIL-HDBK-217F-(2) / DC-DC converters. / Efficiency. / Power converters. / Power electronics. / Reliability. / Soft switching. / Topology. / DC/DC. / FIDES. / IEC-TR-62380. / MIL-HDBK-217F. / Resonant converters. / Rectifying circuits.

The effect of deformations passes on the extrusion pressure in axi-symmetric equal channel angular extrusion

Author

Eivani, A.R.

Pub. Year

2009

Subjects

45. / 45.20.-d. / 45.20.dg. / Axi-symmetric ECAE. / Deformation pass. / Friction coefficient. / Outer curved corner. / Upper bound. / Deformation. / Dies. / Equal channel angular pressing. / Extrusion dies. / Friction. / Tribology. / 45. / 45.20.-d. / 45.20.dg. / Axi-symmetric ECAE. / Deformation pass. / Friction coefficient. / Outer curved corner. / Upper bound. / Extrusion.

Parametric study and computation of seismic performance factors of braced shear panels

Author

Hamed, A.

Publisher

Sharif University of Technology,

Pub. Year

2016

Subjects

Braced steel shear panel. / Deection amplification factor. / Modified strip model. / Over-strength factor. / Amplification. / Energy dissipation. / Seismic design. / Static analysis. / Amplification factors. / Overstrength. / Parametric study. / Response modification factors. / Shear panels. / Strip model. / Shear flow.