Source: http://evahid.com/
Timestamp: 2019-04-23 20:41:50+00:00

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" 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 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.
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.
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.
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, M., Safaei, A., Nehzati, H., Esfahanian, V. and Tehrani, M. M., ”Matlab-based modeling, simulation and design package for Eletric, Hydraulic and Flywheel hybrid powertrains of a city bus,” International Journal of Automotive Tchnology, Vol. 15, Issue 6, pp. 1001-1013, 2014.
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.
Esfahanian, M., Safaei, A., Nehzati, H., Esfahanian, V. and Tehrani, M. M., ”Matlabbased modeling, simulation and design package for Eletric, Hydraulic and Flywheel hybrid powertrains of a city bus,” International Journal of Automotive Technology, Vol. 15, Issue 6, pp. 1001-1013, 2014.
Mahmoudzadeh Andwari, A., Pesiridis, A., Karvountzis-Kontakiotis, A., & Esfahanian, V. (2017a). Hybrid electric vehicle performance with organic rankine cycle waste heat recovery system. Applied Sciences, 7(5), 437.
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.
Hybrid Bus Design and Prototyping (Phase I), 2012.
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.
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.
Launching the National Iranian CFD Website, 15th Fluid Dynamics Conference, Hormozgan University, Iran.
University of Tehran, Associate Professor, Department of Space Physics.
"Technology is synonymous for connection with other people."

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