Sharif Digital Repository

A ZVS-resonant bifilar drive circuit for SRM with a reduction in stress voltage of switches

Author

Ebrahimi, S.

Pub. Year

2013

Subjects

Bifilar drive circuit. / limited switch voltage stress. / Reduced switching losses. / Switched Reluctance Motors (SRM) / Bifilar drives. / Drive circuits. / Low-voltage applications. / Reduced switching. / Stress voltages. / Switch voltage. / Switched Reluctance Motor. / Switching loss. / Electric machinery. / Power electronics. / Reluctance motors. / Software testing. / Zero voltage switching.

Energy management of smart home considering residences' satisfaction and PHEV

Author

Ebrahimi, M.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2018

Subjects

Building Energy Management System. / Electric Vehicle. / Energy Management. / Smart Home. / Automation. / Electric energy storage. / Electric vehicles. / Energy management systems. / Energy utilization. / Intelligent buildings. / Building energy management systems. / Different services. / Electrical devices. / Electricity-consumption. / Energy storage systems. / Management method. / Smart homes. / Total energy consumption. / Cost reduction.

Measured impact of different back-off points and cooling methods on pulse-to-pulse stability and sidelobe level of a high-power solid-state amplifier

Author

Ebrahimi, A.

Publisher

Institution of Engineering and Technology,

Pub. Year

2020

Subjects

Cooling. / Gallium nitride. / High electron mobility transistors. / III-V semiconductors. / Meteorological radar. / Power transistors. / Stability. / Cooling technique. / Forced air cooling. / GaN high electronmobility transistor (HEMT) / Heterodyne receivers. / Pulse compression technique. / Sidelobe levels. / Solid state amplifier. / Solid state power amplifier. / Power amplifiers.

Probabilistic safety assessment of a UF 6 production process

Author

Ebrahimi, B.

Pub. Year

2012

Subjects

Birnbaum. / Birnbaum importance. / Dose exposure. / Event tree analysis. / Failure Probability. / Gas release. / High pressure. / High temperature. / Human errors. / Human reliability analysis. / Importance measure. / Initiating events. / Maintenance policy. / Nuclear facilities. / Probabilistic safety. / Probabilistic safety assessment. / Process equipments. / Production process. / Radioactive gas. / Radioactive release. / Radioactive sources. / Safety improvement. / Sequence analysis. / Tail gas. / Uranium hexafluorides. / Fault tree analysis. / Maintenance. / Nuclear power plants. / Production engineering. / Radioactivity. / Reliability analysis. / Risk management. / Safety engineering. / Security systems. / Uranium. / Gases.

On the temperature control in self-controlling hyperthermia therapy

Author

Ebrahimi, M.

Publisher

Elsevier

Pub. Year

2016

Subjects

Hyperthermia therapy. / Magnetic nanoparticle. / Self-controlling. / Self-regulating. / Temperature distribution.

Atmospheric icing effects of S816 airfoil on a 600 kW wind turbine's performance

Author

Ebrahimi, A.

Publisher

Sharif University of Technology,

Pub. Year

2018

Subjects

BEM. / CFD. / Icing. / Production loss. / Wind turbine. / Aerodynamics. / Airfoils. / Boundary element method. / Computational fluid dynamics. / Deterioration. / Energy dissipation. / Ice. / NASA. / Turbomachine blades. / Turbulence models. / Wind turbines. / Aero-dynamic performance. / Blade-element momentums. / Ice accretion simulation. / Induced separation. / K-Omega turbulence model. / Wind turbine blades. / Turbine components.

Dunford-Taylor integral and the isotropic tensor valued functions having the commutative property with their tensor argument

Author

Ebrahimi, M.

Pub. Year

2012

Subjects

Isotropic tensor valued tensor functions. / Tensor power series. / Commutative condition. / Commutative property. / Dunford-Taylor integral. / Isotropic tensor functions. / Solid material. / Spectral representations. / Tensor-valued functions. / Continuum mechanics. / Information technology. / Integral equations. / Materials science. / Tensors.

Formaldehyde biodegradation using an immobilized bed aerobic bioreactor with pumice stone as a support

Author

Ebrahimi, S.

Pub. Year

2011

Subjects

Biological treatment. / Pumice stone. / Toxic biodegradation. / Aerobic bioreactors. / Aerobic treatment. / Biological process. / COD removal efficiency. / Feed compositions. / Fixed film. / Formaldehyde concentrations. / Formaldehyde degradation. / Hydraulic retention time. / Reactor performance. / Removal efficiencies. / Synthetic waste water. / Toxic effect. / Toxic shocks. / Biodegradation. / Bioreactors. / Degradation. / Microbiology. / Toxic materials. / Wastewater. / Wastewater treatment. / Formaldehyde. / Chemical oxygen demand. / Oxic conditions. / Pumice. / Toxic substance. / Toxicity test.

Port-Hamiltonian control of a brachiating robot via generalized canonical transformations

Author

Ebrahimi, K.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Numerical investigation of the forward and backward travelling waves through an undulating propulsor: performance and wake pattern

Author

Ebrahimi, M.

Publisher

Taylor and Francis Ltd,

Pub. Year

2016

Subjects

Backward travelling wave. / Forward travelling wave. / Undulatory propulsor. / Vortical pattern. / Animals. / Biped locomotion. / Computational fluid dynamics. / Drag. / Energy dissipation. / Finite volume method. / Navier Stokes equations. / Numerical methods. / Transition flow. / Wakes. / Forward-and-backward. / Numerical approaches. / Numerical investigations. / Propulsive performance. / Propulsors. / Travelling waves. / Undulatory locomotion. / Wave transmission.

A comparative numerical study on the performances and vortical patterns of two bioinspired oscillatory mechanisms: Undulating and pure heaving

Author

Ebrahimi, M.

Publisher

IOS Press,

Pub. Year

2015

Subjects

Energy efficiency. / Finite volume method. / Maneuverability. / Reynolds number. / Vortex flow. / Wakes. / Arbitrary Lagrangian Eulerian. / High thrusts. / Higher efficiency. / Leading-edge vortices. / Lower-power consumption. / Oscillatory mechanisms. / Pressure-based. / Significant mechanism. / Navier Stokes equations. / Acceleration. / Calculation. / Comparative study. / Controlled study. / Force. / Hydrodynamics. / kinematics. / Oscillation. / Particle image velocimetry. / Priority journal. / Quantitative study. / Simulation. / Vortex motion.

Numerical investigation of the forward and backward travelling waves through an undulating propulsor: performance and wake pattern

Author

Ebrahimi, M.

Publisher

Taylor and Francis Ltd,

Pub. Year

2015

Subjects

Backward travelling wave. / Forward travelling wave. / undulatory propulsor. / Animals. / Biped locomotion. / Computational fluid dynamics. / Drag. / Energy dissipation. / Finite volume method. / Navier Stokes equations. / Numerical methods. / Transition flow. / Wakes. / Forward-and-backward. / Numerical approaches. / Numerical investigations. / Propulsors. / Travelling waves. / Undulatory locomotion. / Wave transmission.

Effects of elastic contributions on the evolution of nano-structure Al3Sc phase: A phase-field study

Author

Ebrahimi, Z.

Publisher

Sharif University of Technology,

Pub. Year

2016

Subjects

Coherency. / Phase-field model. / Nanostructures. / Phase interfaces. / Al3Sc precipitates. / Coherency. / Elastic contribution. / Elastic strain energy. / Equilibrium shape. / Misfit stress. / Phase field equation. / Phase field models. / Aluminum.

Wind turbine power improvement utilizing passive flow control with microtab

Author

Ebrahimi, A.

Publisher

Elsevier Ltd,

Pub. Year

2018

Subjects

Horizontal axis wind turbine. / Angle of attack. / Computational fluid dynamics. / Flow control. / Reynolds number. / Wind power. / Wind turbines. / Horizontal axis wind turbine blades. / Horizontal axis wind turbines. / Microtab. / Passive flow control. / Performance improvements. / Rotor performance. / Spanwise locations. / Wind turbine power. / Turbomachine blades.

Evaluation of FPGA Hardware as a New Approach for Accelerating the Numerical Solution of CFD Problems

Author

Ebrahimi, A.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2017

Subjects

Accelerating numerical solutions. / CFD. / FPGA. / Hardware definition language. / Numerical solutions. / Computation theory. / Computational fluid dynamics. / Computer hardware. / Differential equations. / Field programmable gate arrays (FPGA) / Fluid dynamics. / Hardware. / Program processors. / Reconfigurable architectures. / System-on-chip. / Complex circuits. / Computational process. / FPGA architectures. / FPGA hardwares. / Hardware definition languages. / ITS architecture. / Numerical solution. / System on a chip. / Reconfigurable hardware.

Power improvement of NREL 5-MW wind turbine using multi-DBD plasma actuators

Author

Ebrahimi, A.

Publisher

Elsevier Ltd,

Pub. Year

2017

Subjects

Electrostatic model. / Flow control. / Horizontal axis wind turbine. / Multi-DBD plasma actuators. / Actuators. / Dielectric devices. / Dielectric materials. / Electric discharges. / Electrostatic actuators. / Flow control. / Navier Stokes equations. / Offshore wind turbines. / Wind. / Active flow control. / DBD plasma. / Dielectric barrier discharges. / Electrostatic modeling. / Horizontal axis wind turbines. / National Renewable Energy Laboratory. / Operational conditions. / Pitch control system. / Wind turbines.

A new integrated AR-IDEA model to find the best DMU in the presence of both weight restrictions and imprecise data

Author

Ebrahimi, B.

Publisher

Elsevier Ltd,

Pub. Year

2018

Subjects

Best DMU. / Data envelopment analysis (DEA) / Imprecise data. / Weight restriction. / Data envelopment analysis. / Integer programming. / Efficiency measurement. / Input and outputs. / Mixed integer linear programming. / Real-life applications. / Supplier selection. / Decision making.

Modeling and simulation speed-up of plasma actuators implementing reconfigurable hardware

Author

Ebrahimi, A.

Publisher

American Institute of Aeronautics and Astronautics Inc,

Pub. Year

2018

Subjects

Actuators. / Computation theory. / Computer hardware. / Dielectric materials. / Electric discharges. / Field programmable gate arrays (FPGA) / Flow control. / Hardware. / Integrated circuit design. / Logic gates. / Plasma applications. / Reconfigurable architectures. / Automated design procedures. / Design and implements. / Dielectric barrier discharge plasma actuators. / Hybrid architectures. / Model and simulation. / Phenomenological modeling. / Programmable logic. / Reconfigurable chips. / Reconfigurable hardware.

Flow separation control over an airfoil using dual excitation of DBD plasma actuators

Author

Ebrahimi, A.

Publisher

Elsevier Masson SAS,

Pub. Year

2018

Subjects

Flow control. / Large eddy simulation. / Actuators. / Airfoils. / Flow control. / Flow separation. / Lift drag ratio. / Spectral density. / Vortex flow. / Vorticity. / Wakes. / Dynamic mode decompositions. / Excitation frequency. / Flow separation control. / Oscillatory behaviors. / Plasma actuator. / Separated shear layers. / Unsteady excitation. / Vortical structures. / Shear flow.