Sajad Alimohammadi
Research Fellow
Mechanical & Manufacturing Engineering
Trinity College Dublin
Ireland
Biography
Dr Sajad Alimohammadi received his PhD degree from Trinity College Dublin in 2015. His PhD research focused on the numerical and experimental characterization of fluid flow and heat transfer in unsteady impinging and co-flowing jet flows. He also explored the vortex dynamics of a pair of interacting synthetic jets issuing from adjacent slot orifices into quiescent air using experimental (PIV) and numerical (CFD) techniques, with practical applications in active flow control and adaptive heat convection. Sajad graduated with a MSc(Eng) degree in 2010 from Sharif University of Technology, Iran, where he worked on the numerical modelling, design, and fabrication of supersonic ejector compressors. In 2011, he was appointed Research Assistant (Wissenschaftliche Mitarbeiter) at the Institute for Thermodynamics (Institut für Thermodynamik, IfT), Technische Universität Braunschweig, Germany, where he performed research on two-phase CO 2 ejectors, and established close collaborations with the German Aerospace Center (DLR) in Braunschweig. In 2014, Sajad was Visiting Researcher in the Department of Mechanical & Industrial Engineering, Indian Institute of Technology (IIT) Roorkee, India, to collaborate with expert researchers in the field of numerical modelling of multi-phase flows. In 2015, he was appointed Post-Doctoral Research Fellow at TCD and Visiting Research Staff member at the NSF I/UCRC Cooling Technologies Research Center (CTRC) at Purdue University, USA, in collaboration with Intel Corporation. In the latter appointment, he investigated the applicability of low-noise air amplifier technology for data centre environments, using analytical modelling, LES-based CFD, computational aeroacoustics (CAA), and PIV. In 2016, his research was funded by Enterprise Ireland and Nokia/Alcatel-Lucent, in the development of reliable lightweight vapour chamber heat sinks for wireless communication applications. Sajad was recently awarded a prestigious Government of Ireland Postdoctoral Research Fellowship 2016 by the Irish Research Council, to continue his career as a Research Fellow at TCD.
Research Interest
wireless communication
Publications
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Sajad Alimohammadi, Moein Farmahini, Davar Derakhshan, Effects Of Various Prevalent Fuels On Spark-Ignition Engine Operation, 18th Int. Conf. on Mechanical Eng., ISME 2010, 2010
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Sajad Alimohammadi, Mohamadreza S. Tehrani and Bijan Farhanieh, Analytical And Numerical Modeling Of Vapor Jet Refrigeration Cycle For Vehicle Air Conditioning, 18th Int. Conf. on Mechanical Eng., ISME 2010, 2010
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Sajad Alimohammadi, Tim Persoons, Darina B. Murray, Mohamadreza S. Tehrani, Bijan Farhanieh and Juergen Koehler, A Validated Numerical-Experimental Design Methodology for a Movable Supersonic Ejector Compressor for Waste-Heat Recovery, Journal of Thermal Science and Engineering Applications, 6, (2), 2013, p021001-
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Sajad Alimohammadi, Darina B. Murray and Tim Persoons, Experimental Validation of a Computational Fluid Dynamics Methodology for Transitional Flow Heat Transfer Characteristics of a Steady Impinging Jet, Journal of Heat Transfer, 136, (9), 2014, pp091703-
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Alimohammadi, S., Dinneen, P., Persoons, T., Murray, D.B. , Thermal management using pulsating jet cooling technology, Eurotherm Seminar 102: Thermal Management of Electronic Systems, Limerick, June 2014, 525, (1), Journal of Physics: Conference Series , 2014, pp012011-
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Sajad Alimohammadi, Tim Persoons and Darina B. Murray, A numerical-experimental study of heat transfer enhancement using unconfined steady and pulsating turbulent air jet impingement, 15th Int. Heat Transfer Conference IHTC15, Kyoto, Japan, Sept. 2014, Begell Hourse, IHTC Digital Library, 2014
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Sajad Alimohammadi, Darina B. Murray and Tim Persoons, On the Numerical-Experimental Analysis and Scaling of Convective Heat Transfer to Pulsating Impinging Jets , International Journal of Thermal Sciences, 98, 2015, p296 - 311
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Sajad Alimohammadi, A Validated Computational Fluid Dynamics Methodology for Characterisation of Fluid Flow & Heat Transfer in Unsteady Jets, The University of Dublin, Trinity College, 2015
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Sajad Alimohammadi, Eoin Fanning, Darina B. Murray and Tim Persoons, Fluid Flow & Heat Transfer in Adjacent Synthetic Jets, 14th UK Heat Transfer Conference, Edinburgh, 2015
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Sajad Alimohammadi, Eoin Fanning, Tim Persoons, Darina B. Murray, Computers & Fluids, Characterization of flow vectoring phenomenon in adjacent synthetic jets using CFD and PIV, 140, 2016, p232 - 246
