Florinela Sirbu l Chemical Thermodynamics | Research Excellence Award

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Dr. Florinela Sirbu l Chemical Thermodynamics | Research Excellence Award

Institute of Physical Chemistry “Ilie Murgulescu | Romania

Dr. Florinela Sirbu is a senior research scientist in physical chemistry with long-standing expertise in chemical and electrochemical thermodynamics. She holds a Ph.D. in Chemistry, a postgraduate diploma in advanced studies, and a bachelor’s degree in biochemical engineering, with sustained research experience at a national research institute. Her professional work focuses on experimental determination and modeling of thermophysical properties of electrolyte and non-electrolyte systems, including biomolecule-containing aqueous solutions. Her research skills include advanced density and sound-speed measurements, electrochemical methods, conductivity analysis, and application of classical and modern thermodynamic models, reflecting significant contributions to experimental data generation, theoretical modeling, and scientific research advancement.

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Featured Publications

Partial Molar Volumes, Isentropic Compressibilities, and Partial Molar Expansibilities of N-Methylglycine and D-Glucose in Aqueous Environments

– Journal of Molecular Liquids, 218, 515–524, 2016
Densities, Speeds of Sound, Refractive Indices, Viscosities and Related Thermodynamic Properties for n-Hexadecane + Two Aromatic Hydrocarbons Binary Mixtures

– The Journal of Chemical Thermodynamics, 128, 383–393, 2019
Activity Coefficients of Electrolytes in the NaCl + Na2SO4 + H2O Ternary System from Potential Difference Measurements

– Journal of Chemical & Engineering Data, 56(12), 4935–4943, 2011
Radiochemical Investigations on Natural Mineral Waters from the Bucovina Region, Romania

– Romanian Journal of Physics, 61(5–6), 1051–1066, 2016
Thermophysical Properties of n-Hexadecane + Some Alkylbenzenes Binary Mixtures at Temperatures from 298.15 K to 318.15 K

– Journal of Molecular Liquids, 237, 208–215, 2017

T. John Tharakan | Rocket Propulsion | Best Researcher Award

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Dr. John Tharakan | Rocket Propulsion | Best Researcher Award

ISRO | India

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🧑‍🔬 Professional Summary

T. John Tharakan is a seasoned mechanical engineer and propulsion scientist with over 35 years of experience at ISRO’s Liquid Propulsion Systems Centre (LPSC), Trivandrum. He is known for his pioneering contributions to liquid propulsion, spray atomization, advanced injector development, and nuclear propulsion systems. He has played key roles in strategic missions like Chandrayaan, Gaganyaan, and OneWeb, and has a strong track record in experimental and computational fluid dynamics.

🎓 Education

He earned his Ph.D. in Applied Mechanics from IIT Madras (2001), focusing on liquid sheet breakup. He holds an M.Tech in Mechanical Engineering (1988) from IIT Madras, and a B.Tech in Mechanical Engineering (1986) from Kerala University, TKM College of Engineering, Quilon.

👨‍💼 Professional Experience

Joining ISRO-LPSC in 1987, he steadily advanced through roles from Scientist/Engineer SB to Scientist/Engineer H, culminating in leadership as Group Director. He directed projects on cryogenic propulsion, electric propulsion (SPTs), and nuclear power systems. His roles involved injector design, spray testing, CFD modeling, and establishing state-of-the-art test facilities.

🧰 Technical Skills

  • Spray & Atomization Mechanics

  • Injector Design & Performance Optimization

  • CFD & Fluid Flow Simulations

  • Experimental Setup & Facility Development

  • Nuclear and Electric Propulsion Systems

  • Thermodynamic Modeling & Plume Dynamics

🎓 Teaching & Mentorship

He has mentored over 25 R&D projects, served as Principal Investigator in over nine RESPOND/STC projects, and guided numerous experimental campaigns and CFD modeling teams.

🔬 Research Interests

  • Liquid & Cryogenic Propulsion Systems

  • Spray Characterization & Injector Technologies

  • Nuclear Propulsion for Space Applications

  • Electric Propulsion (SPT Development)

  • Advanced CFD and Flow Dynamics

  • Mission-critical Propulsion Problem Solving

📖Publications

Thermoelectric power factor performance of silicon-germanium alloy doped with phosphorus prepared by spark plasma assisted transient liquid phase sintering

  • Authors: R. Murugasami, P. Vivekanandhan, S. Kumaran, R.S. Kumar, T.J. Tharakan

  • Journal: Scripta Materialia

  • Year: 2018

The role of backpressure on discharge coefficient of sharp edged injection orifices

  • Authors: T.J. Tharakan, T.A. Rafeeque

  • Journal: Aerospace Science and Technology

  • Year: 2016

Numerical studies on air-core vortex formation during draining of liquids from tanks

  • Authors: P. Basu, D. Agarwal, T.J. Tharakan, A. Salih

  • Journal: International Journal of Fluid Mechanics Research, Vol. 40(1)

  • Year: 2013

Prediction of gas-core vortices during draining of liquid propellants from tanks

  • Authors: D. Agarwal, P. Basu, T.J. Tharakan, A. Salih

  • Journal: Aerospace Science and Technology, Vol. 32(1), pp. 60–65

  • Year: 2014

Trends in comprehensive modeling of spray formation

  • Authors: T.J. Tharakan, A. Mukhopadhyay, A. Datta, M.A. Jog

  • Journal: International Journal of Spray and Combustion Dynamics, Vol. 5(2), pp. 123–180

  • Year: 2013