Vahid Esfahanian | وحید اصفهانیان 

Vahid Esfahanian

Professor, School of Mechanical Engineering, College of Engineering, University of Tehran, Iran

Director/Manager, Vehicle, Fuel and Environment Research Institute (VFERI), University of Tehran, Iran



Personal Data

"To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science."

-Albert Einstein


Details

Name:
Vahid Esfahanian

Birth Date:
Nov. 20, 1961

Birth Place:
Kashan, Iran

Education

BSc.:
Mechanical Engineering, University of Illinois Chicago, Illinois, March 1983

MSc.:
Aero. & Astro. Engineering, The Ohio State University Columbus, Ohio, March 1985

PhD:
Aero. & Astro. Engineering, The Ohio State University, Columbus, Ohio, June 1991

Current Position:

Professor, School of Mechanical Engineering, College of Engineering, University of Tehran, Iran
Director/Manager, Vehicle, Fuel and Environment Research Institute (VFERI), University of Tehran, Iran



Research Interests

" Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."

-Albert Schweitzer


Computational Fluid Dynamics

Computational fluid dynamics, usually abbreviated as CFD, is a branch of fluid mechanics that uses numerical analysis and algorithms to solve and analyze problems that involve fluid flows. Computers are used to perform the calculations required to simulate the interaction of liquids and gases with surfaces defined by boundary conditions.


Aerodynamics and Gas Dynamics

Aerodynamics, is a branch of fluid dynamics concerned with studying the motion of air, particularly when it interacts with a solid object, such as an airplane wing. Aerodynamics is a sub-field of fluid dynamics and gas dynamics, and many aspects of aerodynamics theory are common to these fields. The term aerodynamics is often used synonymously with gas dynamics, with the difference being that "gas dynamics" applies to the study of the motion of all gases, not limited to air.


Computational Battery Simulation

The recent interest in the development of environmentally friendly vehicles powered either fully (electric vehicles, EVs) or partially (hybrid electric vehicles, HEVs) by batteries has resulted in enhanced research into various aspects of this electrochemical energy source. These range from the development of better designs to suit the application (e.g. design favoring high power for HEVs while favoring high energy for EVs) to the development of new materials with superior performance. Parallel to various experimental research programs, mathematical models that describe the behavior of batteries and their interaction with other devices in a vehicle have also received much attention. These models range from those that describe the physics of the various phenomena in the cell.


Internal Combustion Engine

An internal combustion engine (ICE) is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine the expansion of the high-temperature and high-pressure gases produced by combustion apply direct force to some component of the engine. The force is applied typically to pistons, turbine blades, or a nozzle. This force moves the component over a distance, transforming chemical energy into useful mechanical energy.

Hybrid Vehicle

A hybrid vehicle uses two or more distinct types of power, such as internal combustion engine+electric motor, e.g. in diesel-electric trains using diesel engines and electricity from overhead lines, and submarines that use diesels when surfaced and batteries when submerged.


Courses

"The thing I loved the most - and still love the most about teaching - is that you can connect with an individual or a group, and see that individual or group exceed their limits."

-Mike Krzyzewski


  • Fluid Mechanics I

  • Fluid Mechanics II

  • Internal Combustion Engines

  • Gas Dynamics

  • Incompressible Aerodynamics

  • Supersonic Aerodynamics

  • Turbulence

  • Computational Fluid Dynamics I

  • Computational Fluid Dynamics II

  • Numerical Weather Prediction

  • Grid Generation

  • Advanced Internal Combustion Engines

  • Advanced Fluid Mechanics


Under Graduate


Graduate

CFD-I

The present course covers basic and fundamental concept of FDM and FVM. The first part of the course is about Finite Difference Methods for Parabolic, elliptic types equations. Then the Finite Volume Methods are introduced.  Finally the hyperbolic types equations are discussed both theoretically and numerically.


Course Content:

Syllabus Schedule
Lectures:

Lecture 1 Lecture 2-Part 1 Lecture 2-Part 2 Lecture 2-Part 3 Lecture 3-Part 1 Lecture 3-Part 2 Lecture 3-Part 3
Homework:

HW_1 HW_2 HW_3
Exams:


Suggested Readings and Resources:




Publications

"Research is to see what everybody else has seen, and to think what nobody else has thought."

-Albert Szent-Gyorgyi


CFD

Internal Combustion Engines

Hybrid Vehicles

Battery Simulation

Meteorology

Projects

"Every project is an opportunity to learn, to figure out problems and challenges, to invent and reinvent."

-David Rockwell


Scientific Projects

  • Status and Challenges of Cleaner and Efficient Fuels and Vehicle in Iran

    UNEP is supporting countries to develop cleaner and efficient fuels and vehicles. Two of its main initiatives on this issue are the Partnership for Clean Fuels and Vehicles (PCFV) and the Global Fuel Economy Initiative (GFEI). The PCFV promotes the phase out of lead and the development of fuel quality roadmaps, focusing on phasing down sulfur in fuel, and developing equivalent vehicle emission standards. The GFEI, on the other hand, promotes the development and adoption of efficient vehicle policies, such as having specific CO2 emission standards or fuel consumption limits for new vehicles, fiscal reform favoring more efficient vehicles, including electric vehicles, labeling schemes, and others. In Asia Pacific, UNEP established the Asia Pacific Clean Air Partnership (APCAP) to support the national efforts in addressing air pollution. Iran attended the first session of the APCAP Joint forum held in November 2015 and expressed that air pollution is a priority environmental issue in Iran.



Honors & Awards

"No person was ever honored for what he received. Honor has been the reward for what he gave."

-Calvin Coolidge


Keynote Talks

"Education is the key to success in life, and teachers make a lasting impact in the lives of their students."

-Solomon Ortiz


Students

"The whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards."

-Anatole France


Current Students


Ph.D.



Ali Akbar Shahbazi

Ali Akbar Shahbazi


Electrochemical Structure Analysis of Lead-acid Battery using Numerical Simulation and Cluster-based Reduced-order Modeling



Naer Sina

Naer Sina


Predictive Energy Management of the Plug-in Hybrid Electric Bus using the Intelligient Traffic System Information



M.Sc.



Navid Aghamirzaie

Navid Aghamirzaie


Numerical Simulation of UltraBatteries



Seyed Mohammad Mirghavami

Seyed Mohammad Mirghavami


Numerical Simulation of cavitating Flow Over Cascades Using Preconditioning



Alireza Amiri

Alireza Amiri


Reduced-order description of transient instabilities in the shear flow based on Optimally Time Dependent(OTD) mode



Hadi Zanganeh Kia

Hadi Zanganeh Kia


Piston Effect Analysis in Urban Metro Tunnels



Previous Students


Ph.D.



Mohammad Mahdi Salahi
Mohammad Mahdi Salahi
Graduation Year:

2016

Thesis Title:

Three-Dimensional Simulation of Compression Ignition Engines with Controlled Reactivity

Current Position:

Mechanical expert, Iranian Oil Pipeline and Telecommunication Company (IOPTC)



Amir Babak Ansari
Amir Babak Ansari
Graduation Year:

2015

Thesis Title:

Reduced Order Modeling of Lead-Acid Battery

Current Position:

Visiting Lecturer



Behzad Baghapour
Behzad Baghapour
Graduation Year:

2013

Thesis Title:

Convergence Acceleration of High-Order Discontinuous Galerkin Method in Compressible Fluid Flow Simulation Using Newton-Krylov Algorithm

Current Position:

Assistant Professor of Mechanical Engineering at Amir Kabir University



Ali Salavati-Zadeh
Ali Salavati-Zadeh
Graduation Year:

2012

Thesis Title:

Soot Formation Modeling in a Diesel Engine

Current Position:

Research Scientist, Vehicle, Fuel and Environment Research Institute (VFERI)



Hamed Moqtaderi Esfahani
Hamed Moqtaderi Esfahani
Graduation Year:

2012

Thesis Title:

Numerical Simulation of Cathode-Side Flow in PEM Fuel Cell Using LBM

Current Position:

Assistant Professor of Mechanical Engineering at Alzahra University



Pouria Akbarzadeh
Pouria Akbarzadeh
Graduation Year:

2010

Thesis Title:

Preconditioning Method in Numerical Simulation of Cavitating Flows

Current Position:

Associate Professor at Shahrood University of Technology



Hossein Mahmoodi Darian
Hossein Mahmoodi Darian
Graduation Year:

2010

Thesis Title:

Intelligent Filter Design for High-Order Methods in ‎Aerodynamic Simulations with Accuracy Preservation

Current Position:

Assistant Professor of School of Engineering Science, College of Engineering, University of Tehran



Farschad Torabi
Farschad Torabi
Graduation Year:

2008

Thesis Title:

Thermal-Electrochemical Modeling and Simulation of Battery Systems

Current Position:

Associate Professor, Faculty of Mechanical Engineering at K. N. Toosi University of Technology



Sarmad Ghader
Sarmad Ghader
Graduation Year:

2005

Thesis Title:

Supercompact Spatial Differencing for the Numerical Simulation of Fluid Dynamics Problems with Application to the Shallow Water Equations

Current Position:

University of Tehran, Associate Professor, Department of Space Physics.



Morteza Behbahani-Nejad
Morteza Behbahani-Nejad
Graduation Year:

2002

Thesis Title:

Reduced Order Modeling of 3-D Unsteady Flows Using Fluid Eigenmodes and Boundary Element Method

Current Position:

‎Associate Professor at Shahid Chamran University of Ahvaz (Jundi Shapur)



Fereidoun Sabetghadam
Fereidoun Sabetghadam
Graduation Year:

2002

Thesis Title:

Optimization of the Stress-rate of Strain Coefficients of the Non-linear Eddy Viscosity Models Using the Non-linear PSE

Current Position:

Associate Professor at Mechanical & Aerospace Engineering Faculty, Science and Research Branch, Azad University (IAU), Tehran



Kazem Hejranfar
Kazem Hejranfar
Graduation Year:

2000

Thesis Title:

Linear Stability of Hypersonic Flow Over a Blunt Cone using PNS

Current Position:

Professor at Department of Aerospace Engineering, Sharif University of Technology



M.Sc.


Farzin Chaychizadeh
Farzin Chaychizadeh
Graduation Year:

2017

Thesis Title:

Thermal Electrochemical Modeling and Simulation of Lithium Ion Battery



Arman Pouyaei
Arman Pouyaei
Graduation Year:

2016

Thesis Title:

Numerical Analysis of Wind Turbines’ Wake effects using CFD for obtaining Optimal Layout considering Different Wind Directions

Current Position:

Senior Researcher, VFERI



Ehsan Moallem
Ehsan Moallem
Graduation Year:

2007

Thesis Title:

Numerical and Experimental Investigation and Analyzing Different Models of Simulating Hot Air Jets in an Air-Condotioned Space

Current Position:

Adjunct Assistant Professor at Mechanical and Aerospace Engineering Oklahoma State University



Hessam Babaee
Hessam Babaee
Graduation Year:

2006

Thesis Title:

Numerical Simulation of Engine Intake Manifold

Current Position:

Assistant Professor of Mechanical Engineering and Materials Science at University of Pittsburgh





Contact

"Art is I; science is we."

-Claude Bernard


Address:

University of Tehran, College of Engineering (Campus 2), 4th Floor of Institute of Petroleum Eng. Bld., North Kargar Ave., Tehran, Iran


Phone:

(+98) 21 - 88020741


© Copyright 2016, All Rights Reserved, Vahid Esfahanian
Designed in VFERI by Seyed Vahid Ghavami and Ali Salavati-Zadeh