Teaching:Institute/Department core courses1. ME 103: Thermodynamics2. ME 104: Engineering Drawing3. ME 231: Fluid MechanicsDepartment elective courses1. ME 331: Combustion (B.Tech elective)2. ME 545: Combustion Technology (M.Tech elective)Department lab courses1. ME 231: Fluid Mechanics Lab (B.Tech lab)2. ME 401: Mechanical Engineering lab (B.Tech lab)3. ME 592: Thermal Engineering lab (M.Tech lab)Research:Ph.D. supervision:1. Mr. Rajneesh Kumar Yadav (June 2022-present) IIT(BHU) Varanasi; Status: Ongoing2. Mr. Shivanshu Shukla (June 2024-present) IIT(BHU) Varanasi; Status: OngoingProject 1: Sponsored project:Project: Experimental investigation of stability limits, NOx emissions and blowout phenomenon of ammonia-hydrogen-nitrogen-air mixtures in a non-premixed swirl combustorFunding agency: SERB, Govt. of IndiaFunding: INR 31,72,640Project duration: Nov 2022- Oct 2024Research outcome (till date):1. Shivansh Chaturvedi, R. Santhosh, Syed Mashruk, Rajneesh Yadav, Agustin Valera-Medina, "Prediction of NOx emissions and pathways in premixed ammonia-hydrogen-air combustion using CFD-CRN methodology", Journal of the Energy Institute, 111, 101406 (2023)Project 2: Biomass gasification of agriculture residues for green hydrogen generationResearch outcome:1. Shubham Deshmukh and R. Santhosh#, "Solar-assisted gasification of agriculture residues for green hydrogen production", Bioresource Technology Reports, 22, 101506 (2023)

Teaching:1. Applied Thermodynamics (B.Tech core subject)2. Engineering graphics (B.Tech core subject)3. Introduction to combustion (B.Tech elective)4. Applied Thermodynamics lab (B.Tech lab)5. Fluid Mechanics Lab (B.Tech lab)6. Mechanical Measurements lab (B.Tech lab)Ph.D. Supervision:1. Mr. Arun Pattanashetti (Jan 2019-2023) IIT Dharwad: Status: Thesis submittedResearch outcome:1. Arun Pattanshetti, R. Santhosh, "Experimental And Numerical Investigation of Methane/Air and Biogas/Air Coflow Flames in a Confined Coaxial Burner", J. Thermal Sci. Eng. Appl., 16(8): 081004 (2024)2. R. Santhosh, Arun Pattanshetti, Rajneesh Yadav, "Confinement Effect on Recirculation Structures in Isothermal Coaxial Swirling Jet", Experimental Thermal and Fluid Science, 155, 111208 (2024) 3. Arun Pattanshetti, R. Santhosh and Nasir Attar, ''Experimental and numerical investigation of recirculation structures in isothermal swirling coaxial jet", J. Fluids Eng, 144, 101204 (2022).4. Pattanashetti A., Santhosh R. (2021) ‘Computational Fluid Dynamics of Co-axial Unconfined Isothermal Swirling Jets’. https://doi.org/10.1007/978-981-15-5996-9_70 (https://link.springer.com/chapter/10.1007%2F978-981-15-5996-9_70Lab development:Core-UG Instructional Lab setup: Applied Thermodynamics (ATD) Lab @ IIT DharwadIn a lead role as the coordinator of ATD lab, I was instrumental in setting up this lab from scratch. The tasks involved:• Designing and developing a list of experiments for this lab (working in a team with other colleagues)• Preparing a budget for this lab: Indian Rupees. 2.8 Crores ($ 330,000)• Purchasing UG/PG equipment/facilities: Played a key role in purchase of 2D Laser doppler Velocimetry setup (Cost: Indian Rupees 98 lakhs ($ 120000), Portable Flue gas analyzer (Cost: Indian Rupees 10 lakhs ($ 12125)), Data acquisition system (Cost: Indian Rupees 15 lakhs ($ 18000)), several mass flow controllers, fuel and compressor lines, exhaust hood etc.

Project 1: Effervescent atomizationStudied the dependence of internal flow inside an effervescent atomisation on different aerator configurations. In particular, flat-end and streamlined aerator bodies were compared. Flow visualisations involving high-speed shadowgraphy and particle doppler interferometry were conducted to characterise the spray output with different aerator body designs.Research outcome:1. A. Niland, R. Santhosh, R Marsh and P Bowen, "Experimental investigation of effervescent atomization: Part I. Comparison of flat-end and streamlined aerator body designs”, Atomization and Sprays 32(4):53–75 (2022)2. A. Niland, R. Santhosh, R Marsh and P Bowen, "Experimental investigation of effervescent atomization: Part II. Internal flow and spray characterization with novel DARPA SUBOFF afterbody streamline aerator”, Atomization and Sprays 32(4):25–51 (2022).Project 2: Worked as a part of a project (FLEXIS) in Gas Turbine Research Centre (GTRC) aimed at developing alternate fuels for future gas turbine combustors. In this pursuit, Methane blended with CO2, Ammonia blended Methane and Ammonia blended Hydrogen and syngas fuels were tested evaluated in terms of exhaust emissions and instability characteristics at elevated temperatures (premixing) and at atmospheric as well as elevated pressures (up to 3.3 bara). My role in the group was to study hydrodynamics, flow instabilities, flame structure and forced response characteristics of these flames at different swirl numbers and confinement geometries.Research outcome:1. R. Santhosh, Xiao H, Goktepe B, Pugh D, Giles A, Marsh R, Bowen P, Valera-Medina A, “Hydrogen through Carbon-free Ammonia Economy” – Progress performed at the Gas Turbine Research Centre, Wales, 1st Latin American Conference on Sustainable Development of Energy, Water and Environment Systems, 28-31 Jan 2018, Rio De Janeiro, Brazil.

Position: Fluid dynamic researcher to understand flow physics in highly rotating environmentJob description:• Study of multiphase flow dynamics in an aeroengine bearing chamber (containing actual Rolls Royce Trent 1000 HP location bearing). • Understanding hydrodynamics of air-oil interface at high rotational speeds. • Study of droplet impact on a moving film: Understanding crater and crown dynamics, classification of crown and crater morphology, characterising the impact outcome.• Research outcome: 1. R. Santhosh, Jee Loong Hee, Kathy Simmons, David Hann and Graham Johnson, GT2017-63815, Proceedings of ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition GT2017 June 26-30, 2017, Charlotte, NC, USA2. Jee Loong Hee, R. Santhosh, Kathy Simmons, David Hann and Graham Johnson, , GT2017-63813, Proceedings of ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition GT2017 June 26-30, 2017, Charlotte, NC, USA

Study of swirling coaxial jet using tomographic PIV.

Project 1:Thesis: Transition and acoustic response of vortex breakdown modes in coaxial swirling jet and flame • Study of swirling flow field in a coaxial jet setup; First observations of vortex-breakdown structure in coaxial swirling jet in swirl numbers range of 0.5-2.0. • Study of non-premixed swirling flame: Investigation of methane flames in non-premixed mode at different swirl intensities.• PIV in flame environment, high-speed CH* and OH* chemiluminescence imaging, high speed imaging of swirling flames, Dynamic measurements of flow-flame-acoustics interaction• Key Research outcome:1. R. Santhosh and Saptarshi Basu,” Transitions and dynamics of unconfined Non-premixed swirling flame ", Combustion and Flame, 164, 35-52 (2016)2. R. Santhosh and Saptarshi Basu,” Acoustic response of vortex breakdown modes in a coaxial isothermal unconfined swirling jet”, Physics of Fluids, 27, 033601 (2015)3. R. Santhosh, Ankur Miglani and Saptarshi Basu, ”Transition in vortex breakdown modes in a co-axial isothermal unconfined swirling jet”, Physics of Fluids, 26, 043601 (2014)4. R. Santhosh, Ankur Miglani and Saptarshi Basu, ”Transition and Acoustic response of recirculation structures in an unconfined co-axial isothermal swirling flow", Physics of Fluids, 25, 083603 (2013)5. Uyi Idahosa, R. Santhosh, Ankur Miglani and Saptarshi Basu, ” Response dynamics of recirculation structures in Co-axial Non-premixed Swirl Stabilized Flames subjected to Acoustic Forcing ”, J. Thermal Sci. Eng. Appl., 8(1):011008-011008-11 (2015)Project 2:Simulation of ethylene diffusion flame in ANSYS Fluent• Key Research outcome:1. Shantanu Mishra, R. Santhosh, and Saptarshi Basu, “Scalar Transport in Diffusion Flame Wrapped up by an Air and Fuel Side Vortex”, International Communications in Heat and Mass Transfer 47, 2013, pp 32-40

As an Assistant Systems Engineer, got trained in C, C++, J2EE.Worked at Salt Lake, Kolkata