Member of R&D group: improvement of radiator design
SAPCO, Tehran, Iran, (Internship, 2002)
Design of a Test Room for Performance Test of Automotive HVAC
Experimental/Computational methods of Fluid Dynamics and Heat and Mass Transfer, Multiphase flow and Boiling Heat Transfer, Thermal Energy Storage, Renewable energy, Modeling and optimization of energy systems, Cogeneration of heat and power(CHP)
Project:
Design and fabrication of PVT system (1.5 kWe), 2019
Design and fabrication of PTC system (1.2 m*3 m), 2018
Enhancement of Thermal Energy Storage Density in Solar Power Plant by Employment of Phase Change Material (PCM), 2017
Design, Fabrication and analysis a sponge ball cleaning system for one through condensers, 2018
Design, Simulation and Fabrication of a New Solar Pressurized Liquid Piston Stirling Engine, 2017
Design and Fabrication a Thermal cycling system (-10-100 ºC), 2017
Design and Fabrication a wave energy harvesting system for power generation and desalination, 2016
A. Entezari, A. Manizadeh, and R. Ahmadi, Energetical, exergetical and economical optimization analysis of combined power generation system of gas turbine and Stirling engine, Energy Conversion and Management, vol. 159, pp. 189-203, Mar 2018.
O. G. Zarajabad and R. Ahmadi, "Employment of Finned PCM Container in a Household Refrigerator as a Cold Thermal Energy Storage System," Thermal Science and Engineering Progress, 2018.
A. Manizadeh, A. Entezari, and R. Ahmadi, "The Energy and Economic Target Optimization of a Naphtha Production Unit by Implementing Energy Pinch Technology," Case Studies in Thermal Engineering, 2018.
< >.H. Razavi, R. Ahmadi, A. Zahedi, Modeling, simulation and dynamic control of solar assisted ground source heat pump to provide heating load and DHW, Applied Thermal Engineering 129 (2018) 127–144S.M Hosseini, R.Ahmadi, Performance and emissions characteristics in the combustion of co-fuel diesel-hydrogen in a heavy duty engine, Applied Energy 205 (2017) 911–925
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S. M. Hosseini, R. Ahmadi, M. Mohebi, 3D Simulation of Performance and Pollution of Hydrogen-Diesel Combustion in Heavy Duty Engine, Modares Mechanical Engineering, Vol.17, No. 3, pp. 177-186, 2017 (in Persian)
M.Kouhestani, R.Ahmadi, Computational Simulation of Free Cooling in a Building Using Phase Change Material, Modares Mechanical Engineering, Proceedings of the Second International Conference on Air-Conditioning, Heating and Cooling Installations, Vol. 16, No. 13, pp. 135-140, 2016 (in Persian)
R. Ahmadi, T. Okawa, Influence of surface wettability on bubble behavior and void evolution in subcooled flow boiling, International Journal of Thermal Sciences 97, pp. 114-125, 2015
R. Ahmadi, T. Okawa, Observation of Bubble Dynamics during Subcooled Flow Boiling on Different Surface Wettability in Atmospheric Pressure, Modares Mechanical Engineering, Vol. 15, No. 7, pp. 313-320, 2015 (In Persian)
Numerical Optimization of a Household Radiator and Experimental Investigation of Its Thermal Capacity, Journal of Energy Engineering and Management, Vol.5 No.3, 2015 (In Persian)
R. Ahmadi, T. Okawa, Observation of Bubble Dynamics during Subcooled Flow Boiling on Different Surface Wettability in Atmospheric Pressure, Modares Mechanical Engineering, Vol. 15, No. 7, pp. 313-320, 2015 (In Persian)
R. Ahmadi, T. Okawa, Recognition Of Net Vapor Generation In Subcooled Flow Boiling, I Journal of Multidisciplinary Engineering Science and Technology (ISSN:3159-0040), Vol. 2, Issue 3, pp. 465-469 (2015)
R. Ahmadi, T. Ueno, T. Okawa, Visualization study on the mechanisms of net vapor generation in water subcooled flow boiling under moderate pressure conditions, International Journal of Heat and Mass Transfer, Vol. 70, pp. 137-151 (2014).
R. Ahmadi, T. Ueno, T. Okawa, Experimental identification of the phenomenon triggering the net vapor generation in upward subcooled flow boiling of water at low pressure, International Journal of Heat and Mass Transfer, Vol. 55, No. 21-22, pp. 6067-6076 (2012).
R. Ahmadi, T. Ueno, T. Okawa, Bubble dynamics at boiling incipience in subcooled upward flow boiling, International Journal of Heat and Mass Transfer, Vol. 55, No. 1-3, pp. 488-497 (2012).
R. Ahmadi, A. Nouri-Borujerdi, J. Jafari, I. Tabatabaei, Experimental study of onset of subcooled annular flow boiling, Progress in Nuclear Energy, Vol. 51, pp. 361-365 (2009).