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
"To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science."
Name:
Vahid Esfahanian
Birth Date:
Nov. 20, 1961
Birth Place:
Kashan, Iran
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
" Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."
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, 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.
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.
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.
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.
"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."
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
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:
Chapter-1
Chapter-2_1
Chapter-2_2
Chapter-2_3
Chapter-3_1
Chapter-3_2
Chapter-3_3
Chapter-4_1
Chapter-4_2
Chapter-5_1
Chapter-5_2
Homework:
HW_1
HW_2
HW_3
HW_4
HW_5
HW_6
HW_7
Q_5_TH
Project-1
Q_8_TH
Project-2
HW_10
HW_11
HW_8
HW_9
Exams:
Suggested Readings and Resources:
The "Introduction to Battery Technology" course offers a comprehensive overview of the principles, types, and applications of battery systems. This course is designed for individuals seeking foundational knowledge in battery technology, including new graduate students, postdoctoral researchers, and professionals in the fields of natural sciences and engineering.
1- Battery Technology Crash Course , A Concise Introduction by by Sloboda Petrovic, Springer, 2021.
2- Simulation of Battery Systems, Fundamentals and Applications by Torabi, F. and Ahmadi, Academic Press, (2020).
Textbooks:
Course Content:
Lectures:
Lecture _1
Lecture_2
Lecture_3
Lecture_5
Lecture_6
Lectrue_4
Homework:
HW_1
Hw_2
Handout1.pdf
Handout2.pdf
Exams:
Suggested Readings and Resources:
"Research is to see what everybody else has seen, and to think what nobody else has thought."
Shahbazi, A, A, Esfahanian, V.}, Taghavi, A., Salavati-Zadeh, A. and Poursamad, A. and Zirak, S., Performance Estimation of Multi-Stage Cooled Axial Flow Turbines Under Choked Conditions, Applied Thermal Engineering, Part B, Vol. 230, Pages 120828, 2023
Ansari, M., Esfahanian, V., Izadi, MJ., Bashi, H., Tavakoli, A, and Kordi, M., Implementation of hot steam injection in steam turbine design: A novel mean-line method coupled with multi-objective optimization and neural network, Energy, Vol. 283, Pages 129124, 2023.
Bashi, H., Esfahanian, V., Tavakoli, A., Ansari, M., Izadi, M. J., and Kordi, M, Improved Streamline Curvature Method for Prediction of Gas Turbines Performance, Arabian Journal for Science and Engineering, Pages 1-18, 2023.
Esfahanian, V., Izadi, M., I., Bashi, H., Ansari, M., Tavakoli, A., and Kordi, M, Aerodynamic shape optimization of gas turbines: a deep learning surrogate model approach, Structural and Multidisciplinary Optimization, Vol. 67, Issue 1, Page 2, 2024.
Ansari, M., Esfahanian, V., Izadi, M. J., Bashi, H., Tavakoli, A., and Kordi, M, A new optimization strategy for wet steam effect minimization in steam turbine using combined 2D non-equilibrium wet steam flow and mean-line analysis, International Journal of Heat and Mass Transfer, Vol. 220, Page 124964, 2024.
Esfahanian, V., Akbarzadeh, P. and Hejranfar, K.,``An improved progressive preconditioning method for steady non-cavitating and sheet-cavitating flows. International Journal for Numerical Methods in Fluid, Vol. 68, pages 210-232, 2012.
Esfahanain, V., Darian HM., Gohari, I, "Assessment of WENO schemes for numerical simulation of some hyperbolic equations using GPU,'' Journal of Computers and Fluids, March 2012.
Darian, H. M., Esfahanian, V. and Hejranfar, K., ``A Shock-Detecting Sensor for Filtering of High-Order Compact Finite Difference Schemes,'' Journal of Computational Physics, Vol. 228(11), 3936-3972, 2010.
Ashrafi, Kh., Kalhor, M., Shafie-Pour M. and Esfahanian, V. ”Numerical simulation of aerodynamic suspension of particles during wind erosion,” Environmental Earth Sciences, Vol. 74, Issue 2, Pages 1569-1578, 2015.
Ashrafi, Kh., Shafie-pour, M., Kalhor, M. and Esfahanian, V., ”Numerical Simulation of Air Pollutant Distribution in Urban Tunnels,“ Environmental Modeling & Assessment," Vol. 17, Issue 5, pp. 555-564, 2012.
Mahmoodi Darian, H., Esfahanian, V. and Hejranfar, K, "A Shock-Detecting Sensor for Filtering of High-Order Compact Finite Difference Schemes,'' Journal of Computational Physics,
Vol. 228(11), 3936-3972, 2010.
Amir Mohammadiha, Hossein Malakooti, Vahid Esfahanian, "Development of Reduction Scenarios for Criteria Air Pollutants Emission in Tehran Traffic Sector, Iran," Science of The Total Environment, Vol. 622, Pages 17-28, 2018.
V. Esfahanian, F. Torabi, “Numerical simulation of lead-acid batteries using Keller–Box method,” Journal of Power Sources, Vol. 158, pp. 949-952, 2006.
Masih-Tehrani, M., Esfahanian, V., Esfahanian, M., Nehzati, H, and Esfandiari, M. J. ”Hybrid Energy Storage Optimal Sizing for an e-bike,” International Journal of Automotive Engineering, Vol. 15, pp. 1016-1025, 2015.
Torabi, F., Esfahanian, V., “Study of Thermal-Runaway in Batteries. : II. The Main Sources of Heat Generation in Lead-Acid Batteries,” Journal of Electrochemical Society, Volume 160, Issue 2, Pages: A223-A234, 2013.
Torabi, F., Esfahanian, V., “Study of Thermal-Runaway in Batteries. I: Theoretical Study and Formulation,” Journal of the Electrochemical Society, Vol. 158, Issue 8, pp. A850-A858, 2011.
Esfahanian, V., Ansari, A. B. and Torabi, F., ”Discharge, rest and charge simulation lead-acid batteries using an efficient reduced order model based on proper orthogonal decomposition,” Applied Energy, 173, 152-167, 2016.
Pourmirzaagha, H., Esfahanian, V., Sabetghadam, F. and Torabi, F. “Single and multi‐objective optimization for the performance enhancement of lead–acid battery cell,” International Journal of Energy Research 40 (14), 2016.
Mahmoudzadeh Andwari, A., Pesiridis, A., Rajoo, S., Martinez-Botas, R., & Esfahanian, V. (2017b). A review of battery electric vehicle technology and readiness levels. Renewable and Sustainable Energy Reviews, 78, 414-430.
Esfahanian, V., Shahbazi, A., A., and Torabi, F., A real-time battery engine simulation tool (BEST) based on lumped model and reduced-order modes: Application to lead-acid battery, Journal of Energy Storage, Vol. 24, Pages 100780, 2019
Aghamirzaie, N., Esfahanian, V., Jafari, A., and Dalakeh, M. T, Mathematical Modeling of Ultra-Battery, Journal of The Electrochemical Society, Vol. 166, Issue 15, Pages A3660, 2019
Shahbazi, A., A. and Esfahanian, V., Reduced-order modeling of lead-acid battery using cluster analysis and orthogonal cluster analysis method, International Journal of Energy Research, Vol. 43, Issue 13, Pages 6779-6798, 2019
Ansari, A. B., Esfahanian, V., and Torabi F, Thermal-electrochemical simulation of lead-acid battery using reduced-order model based on proper orthogonal decomposition for real-time monitoring purpose, Journal of Energy Storage, Vol. 44, Pages 103491, 2021
Javaheri, A., Esfahanian, V., Salavati-Zadeh, A., Darzi, M. and Mirsoheil, S. M., ”Investigation of Natural Gas Composition Effects on Knock Phenomenon in SI Gas Engines using Detailed Chemistry,” Journal of Applied Mechanics and Materials, Vol. 493, pp. 239-244, 2014.
Salahi, M. M., Esfahanian, V., Gharehghani, A., and Mirsalim, M. ”Investigating the reactivity controlled compression ignition (RCCI) combustion strategy in a natural gas/diesel fueled engine with a pre-chamber,” Energy and Conversion Management, Vol. 132, Pages 40-53, 2017.
Esfahanian, V., Javaheri, V. and Ghaffarpour, M., “Thermal analysis of an SI engine piston using different combustion boundary condition treatments,” Applied Thermal Engineering, Vol. 26, Issue 2, pp. 277-287, 2006.
A. Mahmoudzadeh Andwari, M. F. Muhamad Said, A. Abdul Aziz, V. Esfahanian, M. R. Ahmad Baker, M. R. Mohd Perang and H. Mohd Jamil, "A study on Gasoline Direct Injection (GDI) Pump System Performance Using Model-Based Simulation," JSAME, Vol. 2, Issue 1, PP. 14-22, 2018.
"Every project is an opportunity to learn, to figure out problems and challenges, to invent and reinvent."
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.
"No person was ever honored for what he received. Honor has been the reward for what he gave."
Gold Medal of UNESCO for Fundamental Science, April 2002.
Dr. Taghi Ebtekar’s prize in Environment, 2008.
Best Technology award for first Hybrid Electrical Bus in Middle East, 2011.
The winner of the best paper presentation in AVL Advanced Simulation Tech-nologies International User Conference, Graz, Austria, June 2011.
Khwarizmi Second Award in Applied Research, 25th Khwarizmi International Award, Feb. 2012.
COMSATS Awards, Feb. 2012.
Allameh Award/Prize from Iran National Elite Foundation, 2013.
Outstanding Professor of the Year Award in Mechanical Engineering, 2015.
Khwarizmi First Award in Applied Research, 15th Khwarizmi International Award, Feb. 2002.
"Education is the key to success in life, and teachers make a lasting impact in the lives of their 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."
Predictive Energy Management of the Plug-in Hybrid Electric Bus using the Intelligient Traffic System Information
Numerical Simulation of UltraBatteries
Numerical Simulation of cavitating Flow Over Cascades Using Preconditioning
Reduced-order description of transient instabilities in the shear flow based on Optimally Time Dependent(OTD) mode
Piston Effect Analysis in Urban Metro Tunnels
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 | |
Graduation Year: | 2015 |
Thesis Title: | Reduced Order Modeling of Lead-Acid Battery |
Current Position: | Visiting Lecturer |
Mohsen Ghadyani | |
Graduation Year: | 2014 |
Thesis Title: | Developing a Robust Method for Compressible Flow Simulation Using LBM |
Current Position: | Assistant Professor at College of Engineering, Yadegar -e- Imam Khomeini Branch, Azad University (IAU), Tehran |
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 | |
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 | |
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 | |
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 | |
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 | |
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 |
Khosro Ashrafi | |
Graduation Year: | 2006 |
Thesis Title: | Reduced Order Modeling of Unsteady Shallow Water Equations Using POD |
Current Position: | Associate Professor at Environmental Engineering at University of Tehran |
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 | |
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 | |
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 | |
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 |
Farzin Chaychizadeh | |
Graduation Year: | 2017 |
Thesis Title: | Thermal Electrochemical Modeling and Simulation of Lithium Ion Battery |
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 |
Ali Akbar Shahbazi | |
Graduation Year: | 2012 |
Thesis Title: | 3D Conjugate Heat Transfer Modeling of Gas Turbine Vane for Blade Life Assessment |
Current Position: | Senior Researcher at Vehicle, Fuel & Environment Research Institute (VFERI) |
Ehsan Moallem | |
Graduation Year: | 2007 |
Thesis Title: | Numerical and Experimental Investigation and Analyzing Different Models of Simulating Hot Air Jets in an Air-Conditioned Space |
Current Position: | Adjunct Assistant Professor at Mechanical and Aerospace Engineering Oklahoma State University |
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 |
"Technology is synonymous for connection with other people."
Good lectures on Linear Algebra
"Art is I; science is we."
University of Tehran, College of Engineering (Campus 2), 4th Floor of Institute of Petroleum Eng. Bld., North Kargar Ave., Tehran, Iran
(+98) 21 - 88020741