Mechanical Engineering

Educational Biography:

- B.Sc. in Physics from Tabriz University (First Grade), Iran.

- M.Sc. in Mechanical Engineering from Victoria University of Manchester (Method 2 by research), England.

- Ph.D. in Mechanical Engineering from Tsukuba University, Japan.

-  Published journal articles:

- Mohammad Reza Ansari, Reza Gheisari, Mohsen Azadi, 2013, Flow pattern change in horizontal rectangular laterally ribbed ducts through alteration of the ribs thickness and pitch, International Journal of Multiphase Flow, 54, 11-21

- M. R. Ansari, A. Daramizadeh, 2013, Numerical simulation of compressible two-phase flow using a diffuse interface method, International Journal of Heat and Fluid Flow, 42, 209-223 

- M. R. Ansari, S. Mohammadi, M.Khalaiji Oskouei, 2012, two-phase gas/liquid-solid flow modelling in 90 bends and its effect on erosion, Global journal of researches in engineering mechanical and mechanics engineering, 12, 35-44

- M.R. Ansari , B. Arzandi, 2012, Two-phase gas-liquid flow regimes for smooth and ribbed rectangular ducts, International Journal of Multiphase Flow, 38, 118-125

- M. R. Ansari, A. Hadidi, M.E. Nimvari, 2012, Effect of a uniform magnetic field on dielectric two-phase bubbly flows using the levelset method, Journal of Magnetism and Magnetic Materials, 324, 4094-4101

- Reza Gheisari, Ali jafarian, Mohammad Reza Ansari, 2012, Analytical investigation of compressible oscillating flow in a porous media: A second-order successive approximation technique, International Journal of refrigration, 35, 1789-1799

- M. R. Ansari, A. Daramizadeh, 2012, Slug type hydrodynamical instability analysis using a five equations hyperbolic two-pressure, two-fluid model, Ocean Engineering, 52, 1-12

- M. R. Ansari, N. Ghiasi, 2012, Hydrodynamical instability initiation prediction by hyperbolic model for two-phase stratified flow using spectral method, International Journal for computational Methods in Engineering Science and Mechanics, 13, 1-9

- M. R. Ansari, R.D. Firuz-Abadi, M. Ghasemi, 2011, Two-phase model analysis of nonlinear sloshing in a rectangular container, Ocean Engineering, 38, 1277-1282

- Mohammad Reza Ansari, reza Marzooghi, 2011, Spatial reactor dynamics and thermo hydraulic behavior simulation of a large AGR nuclear power reactor in response to a reactivity step change disturbance, Energy and Power Engineering, 3, 366-375

- M.R. Ansari and N. Ghiasi, 2011, Hydrodynamical instability initiation in two-phase stratified flow using spectral method, Communication Nonlinear Science Numerical Simulation, 16, 741-751.

- M.R. Ansari, V. shokri, 2011, Numerical modeling of slug flow initiation in a horizontal channels using a two-fluid model, International Journal of Heat and Fluid Flow, 32, 145-155 

- M. R. Ansari, M.E. Nimvari, 2011, Bubble viscosity effect on internal circulation within the bubble rising due to buoyancy using the level set method, Annals of Nuclear Energy, 38, 2770-2778

 - M. R. Ansari and V. Shokri, 2007, 'New Algorithm for the numerical simulation of two-phase stratified gas-liquid flow and its application for analyzing the Kelvin-Helmholtz instability criterion with respect to  wave length effect', Nuclear Engineering and Design, Vol. 237, 2302~2310 

   - M. R. Ansari and V. Mortazavi, 2007, 'Transient Response of a Co-current Heat Exchanger to an Inlet Temperature Variation with Time Using an               Analytical And Numericxal Solution, Numerical Heat Transfer, Vol. 52, No. 1, 71~85

-  M.R. Ansari and A. Eskandari Sani, 2007, 'Surface tension effect on stability  of two-phase stratified flow, Fluid Dynamic Research, Vol. 39, 279-291

- M. R. Ansari, and V. Mortazavi, 2006و “Simulation of Dynamical Response of a Countercurrent Heat Exchanger to Inlet Temperature or Mass Flow Rate        Change”, Journal of Applied Thermal Engineering, Vol. 26, Issues 17-18, pp. 2401~2408, doi:10.1016/j.applthermaleng

 -  M. R. Ansari, 2004و “Effect of Pressure on Two-Phase Stratified Flow Modeling” Journal of Nuclear Science and Technology, Vol. 41, No. 7, pp. 709~714

-   M. R. Ansari, 2000 “Wave Length Effect on Kelvin-Helmholtz Instability Criterion in Two-Phase Stratified Flow”, Journal of Science and Technology, Vol. 24, No. 3.

-  M. R. Ansari, 1998, “Numerical Analysis for Slugging of Steam-Water Stratified Two- Phase Flow in Horizontal Duct”, Journal of Fluid Dynamics Research, 22(6), 329~344

-   M. R. Ansari, H. Nariai, 1989, “Experimental Investigation and Slugging of Air-Water  Stratified Flow in Horizontal Duct”, Journal of Nuclear Science and Technology, Vol. 26, No. 7  

 For journal articles published in persain language, See Farsi version of Curriculum Vitae.

- Published conference articles:  

- Nima Samkhaniani, Mohammad Reza Ansari, A VOF method to phase change modeling, 1th Iranian Conference on Heat and Mass Transfer-ICHMT2012, University of Sistan and Baluchestan, Zahedan, Iran.

- Nima Samkhaniani, Mohammad Reza Ansari, Numerical Simulation of convective heat transfer of slug using flow in micro tube, 1th Iranian Conference on Heat and Mass Transfer-ICHMT2012, University of Sistan and Baluchestan, Zahedan, Iran.

- A. Hadidi, M.R. Ansari, Numerical simulation of magnetic field effect on two-phase bubbly flow by using Level Set method, 3rd Conference on Thermal Power Plants, Amirkabir University of Technology, Tehran, Iran, 2011

- M. Torabi Rad, M. R. Ansari, M. Sharafi, Exact analytic solution for the effects of radiation on the heast transfer of a liquid film on an unsteady streching sheet, 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Antalya, Turkey, 2010 

- M. R. Ansari, Y. Amini, A. Jaberi, V. Shokri, Numerical modeling of stratified two-phase flow with transient two-fluid model, 13th Annual and 2nd International Fluid Dynamics Conference, 2010, Shiraz, Iran.

- V. Shokri, A. Azimi, N. Ghiasi, M. R. Ansari, M. Manteghian, Wave length effect on Kelvin-Helmholtz instability in oil-gas two-phase stratified flow using CFD modeling, The 5th International Chemical Engineering Congress & Exhibition, 2008, Kish, Iran

- V. Shokri, A. Azimi, N. Ghiasi, M. R. Ansari, M. Manteghian, Experimental study and CFD modeling of interfacial instability in two-phase oil-gas flow in transport pipe lines, The 5th International Chemical Engineering Congress & Exhibition, 2008, Kish, Iran

- A. Barati, M. R. Ansari, Analysis of the gas turning point position in particle collector cyclones on the efficiency oc collection, International Mechanical Engineering Congress & Exposition, ASME 2007. 

- M. R. Ansari and A. Davari,”Numerical Analysis of Pipeline Equipment Effect on Water Hammer Using Characteristic method”, 4^th ASME/JSME Joint Fluids Engineering Conference, Hawaii, USA, July 6~10, 2003.

- M. R. Ansari, “Slug Induced Water-Hammer in Steam-Water Stratified Two-Phase Flow during Condensation Phenomena”, 3^rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, CA, July 18~23, 1999.

- M. R. Ansari, “Dynamical Behavior of Slug Initiation Generated by Short Waves in Two-Phase Air-Water Stratified Flow”, ASME International mechanical Engineering Congress & Exposition-IMECE 98, Anaheim, CA, November 15~20, 1998.

- M. R. Ansari, “Gas Turbine Cycle Efficiency Improvement by Spray Water”, 17^th World Energy Congress, World Energy Council, Houston, USA, September 13~18, 1998.

- M. R. Ansari, “Experimental Investigation on Wave Initiation and Slugging of Saturated Steam-Water Stratified Flow in Horizontal Duct”, 2^nd International Conference on Multiphase Flow, Kyoto, Japan, April 3~7, 1995.

- M. R. Ansari, H. Nariai, “Initiation of Waves and Slugging in Steam-Water Stratified Flow”, Fall Meeting of The Atomic Energy Society of Japan. Oct. 1990.

- M. R. Ansari, H. Nariai, “Development of Waves and Initiation of Slugging in Air-Water Stratified Flow”, Spring Meeting of the Atomic Energy Society of Japan, Vol. 1, 1988.

- M. R. Ansari, H. Nariai (Tsukuba Univ.), M. Hirano, T. Watanabe (Japan Atomic Energy Research Institute),”Numerical Analysis on Slugging of Air-Water Stratified Flow in Horizontal Duct Using MINCS Code. 3^rd International Topical Meeting on Nuclear Power Plant Thermal Hydraulics and Operation, Nov. 1988, Seoul, Korea.

 For conference articles published in persain language, See Farsi version of Curriculum Vitae.

- Research and Employment Experiences:

- Research at Central Electricity Generating Board (CEGB) of England.

- Ministry of Energy as Head shift engineer of operation department and design section of Neka Power plant (The biggest in Middle east)

- Responsible for trainning of engineers of Ministry of Power

- Responsible for commissioning of units No. 1 and 2 of Neka Power Plant for the first time in Iran

- Research in Tsukuba University in Multiphase Flow

- Resarch in Japan Atomic Energy Research Institute (JAERI) In Multiphase Flow

- Assistance Professor of Energy Conversion section of Tarbiat Modares University

- Associate Professor of Energy Conversion section of Tarbiat Modares University

- Head of Energy Conversion group

- Responsible fo Multiphase Flow Lab.

- Published and Translated Books: 

1- M.R. Ansari , Gas Turbine cycle and it's application in power generation, Published by Tarbiat Modares University, 2001

2- M.R. Ansari, Gas dynamics aspects of two-phase flow, Published by Tarbiat Modares University, 2012 (translated from English Version)

   - Courses Taught:

- Power station design

- Gas turbine cycle

- Advanced Thermodynamics

- Energy and Exergy

- Multiphase Flow

- Gas turbine and Combined Cycles

- Nuclear Power Stations

- Two-Phase Flow Modeling

- Scientific Society member:

- New York Academy of Science

- I. R. of Iran Energy committee

- Iranian Mechanical Engineers Society

- Project Technical Report:

- M. R. Ansari, “Temperature Drop Across Plain and Fin Tube of Heyshem Power Station Test Rig”, Central Electricity Generating Board, SSD-NW, 1979.

- M. R. Ansari, “Two-Phase Flow Modeling” Japan Atomic Research Institute, 1990.

-  Research Project Leader:

-  5 KW wind turbine generator (Iran).

- Gas turbine cycle efficiency improvement (Iran).

- Hydraulic instability analysis for Kurang No. 3 Channel (Iran).

- Temperature drop estimation in helix boiler for Heyshem nuclear power station (England).

- Design of multi hole orifices for flow distribution in nuclear power station (England).

- Two-Phase flow modeling of ill-posed equations (Japan).

- Well-posed modeling investigation (Japan).

-         Awards:

       First Rank award for four years during B.Sc. from Tabriz University.