Indian Institute of Space Science and Technology
Declared as Deemed to be University under Section 3 of the UGC Act, 1956An autonomous institute under Department of Space, Govt. of India
Ph.D. in Aerospace Engg. (University of Florida) [Aug 2005-August 2008]
M.S. (by Research) in Aerospace Engg. (IIT Madras) [Aug 2003-July2005]
B.Tech. in Mechanical Engg. (Univ. of Kerala) [Sep 1999-April 2003]
Course Offered
Undergraduate: Gas Dynamics, Air-breathing Propulsion, Rocket Propulsion, Aerospace Vehicle Design
Graduate: Compressible Flow, Aerospace Propulsion, Aerospace Vehicle Design, Design and Modeling of Rocket Propulsion Systems
Experience
Professor, Indian Institute of Space Science and Technology, Thiruvananthapuram (Feb 2020 – present)
Associate Professor, Indian Institute of Space Science and Technology, Thiruvananthapuram (Jan 2014 – Jan 2020).
Assistant Professor, Indian Institute of Space Science and Technology, Thiruvananthapuram (June 2009 – Dec2013).
Postdoctoral Research Associate, Iowa State University (Sep 2008-May2009).
Research Work / Area
Advanced Propulsion and Laser Diagnostics Laboratory, IIST
Area of Interest
High pressure H2-O2 combustion, Supersonic combustion, Rocket injector spray characterization, Nozzle flow seperation, Cavity induced oscillation, and Pylon based mixing in high speed flows, Nanofluids synthesis and characterization, Laser Diagnostics: concentration, velocity and droplet size measurements
International Conference
Ayyapan, D., Muthukumaran, C.K., Vaidyanathan, A., and Nandakumar, K., “Temperature Effects on the Instablity Nature of Liquid Jets at Subcritical and Supercritical Chamber Conditions”, FMFP18-544, 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP), IIT Bombay, Mumbai, Dec 10-12, 2018
Maurya, S., and Vaidyanathan, A., " Stagnation and Static Property Correlations for Equilibirum Flows", ICTACEM-2017/0580, International Conference on Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM 2017), IIT Kharagpur, 28-30 Dec 2017
Kumar, M., and Vaidyanathan, A., "Shock Train Dominated Confined Supersonic Cavity Flow", ICTACEM-2017/0381, International Conference on Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM 2017), IIT Kharagpur, 28-30 Dec 2017
Ayyappan, D., Muthukumaran, C.K., Vaidyanathan, A., and Nandakumar, K., "Dynamics of Circular Liquid Jet at Supercritical Chamber Conditions", IHMTC2017-13-276, 24th National and 2nd International ISHMT-ASFTE Heat and Mass Transfer Conference (IHMTC 2017), BITS Pilani, Hyderabad, 27-30 Dec, 2017
Saxon, A. M., Kumar, P.P., and Vaidyanathan, A., "A Computational Study to Investigate the Onset of Heat Transfer Deterioration for a Trans-critical of Methane Flow in a Rocket Engine Coolant Channel", CHT-17-230, 7th International Symposium on Advances in Computational Heat Transfer (CHT-17), Naipoli, Italy, May 28-June 1, 2017
Gautam, T., Lovejeet, G., and Vaidyanathan, A., “Combined Effect of Aft Wall Offset and Cavity Floor Injection on Supersonic Flow Pass Cavity”, FMFP16 - 105, 6th International and 43rd National Conference on Fluid Mechanics and Fluid Power,MNNITA, Allahabad , Dec 15-17, 2016
Mohan, K., Sasidharan, V., and Vaidyanathan, A., “Wake Evacuation Effects in Expansion Deflection Nozzles”, FMFP16 - 151, 6th International and 43rd National Conference on Fluid Mechanics and Fluid Power,MNNITA, Allahabad , Dec 15-17, 2016
Agarwal, D.K., Peter, J., Vaidyanathan, A., and Kumar, S.S, “Measurement of thermal conductivity of kerosene-graphene nanofluid”, IHMTC2015-198, 23rd National and 1st International ISHMT-ASFTE Heat and Mass Transfer Conference, ISRO, Thiruvanathapuram, Dec 17-20, 2015
Muthukumaran, C.K., and Vaidyanathan, A., “Study on Interfacial Instabilities in Laminar Liquid jet at its Subcritical and Supercritical Environment”, IHMTC2015-1389, 23rd National and 1st International ISHMT-ASFTE Heat and Mass Transfer Conference, ISRO, Thiruvanathapuram, Dec 17-20, 2015
Mathew, S., Kannayain, K., Vaidyanathan, A., and Tharakan, T.J., “Paramteric Studies on Spray Fan formed by a Triplet Impinging Injector”, IHMTC2015-1176, 23rd National and 1st International ISHMT-ASFTE Heat and Mass Transfer Conference, ISRO, Thiruvanathapuram, Dec 17-20, 2015
Banda, M.V.K., Kannayain, K., and Vaidyanathan, A., “Spray Characterization of Liquid Centered Swirl Coaxial Injectors”, IHMTC2015-925, 23rd National and 1st International ISHMT-ASFTE Heat and Mass Transfer Conference, ISRO, Thiruvanathapuram, Dec 17-20, 2015
Sanka, S.D.V.S., Kannayain, K., and Vaidyanathan, A., “Characterization of Gas Centered Swirl Coaxial Injectors”, IHMTC2015-1146, 23rd National and 1st International ISHMT-ASFTE Heat and Mass Transfer Conference, ISRO, Thiruvanathapuram, Dec 17-20, 2015
Kannayain, K., and Vaidyanathan, A., “Design and Characterization of Liquid Centered Swirl Coaxial Injector”, FMFP14 – A – 219, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power, IIT Kanpur, Dec 12-14, 2014
Maurya, P.,K., Kumar, V.R., Rajeev C., and Vaidyanathan, A., “Effect of Aft Wall Offset on Supersonic Flow Over Cavity”, FMFP14 – A – 245, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power, IIT Kanpur, Dec 12-14, 2014
Viswakarma, M., and Vaidyanathan, A., “ Experimental investigation of Secondary Jet Injection and Mixing using Pylon at M=1.65 Flow”, FMFP14 – B –724, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power, IIT Kanpur, Dec 12-14, 2014
Arora, R., and Vaidyanathan, A., “ Experimental and Numerical Investigation of Flow Through Double Divergent Nozzle”, FMFP14 – C –705, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power, IIT Kanpur, Dec 12-14, 2014
Muthukumaran, C. K., Kannayain, K., and Vaidyanathan, A., “Transition in the Elliptical Jet Characteristics from Super to Subcritical Conditions”, FMFP14 – F –204, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power, IIT Kanpur, Dec 12-14, 2014
Agarwal, D.K., Peter, J., Vaidyanathan, A., Kumar, S.S, “Experimental investigation of kerosene-alumina nanofluid for heat transfer application”, HMTC1300316, 22nd National and 11th ISHMT – ASME Heat and Mass Transfer Conference, IIT Kharagpur, Dec 2013
Muthukumaran, C. K., and Vaidyanathan A., “Flow Characteristics of Elliptical Jet from Sub to Supercritical Conditions”, HMTC1300411, 22nd National and 11th ISHMT – ASME Heat and Mass Transfer Conference, IIT Kharagpur, Dec 2013
Sozer, E., Vaidyanathan, A., Segal, C., Shyy, W., "Computational Assessment of Gaseous Reacting Flows in Single Element Injector", AIAA 2009-449, 47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition , Orlando, FL, 2009
Vaidyanathan, A., Gustavsson, J., Segal, C., "Heat Fluxes/OH-PLIF Measurements in a GO2/GH2 Single-Element Shear Injector", AIAA 2007-5591, 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibti, Cincinnati, OH, July 8-11, 2007
Conley, A., Vaidyanathan, A., Segal, C., "Heat Fluxes Measurements in a GO2/GH2 Single-Element Shear Injector", AIAA 2006-5048, 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Sacramento, CA, July 9-12, 2006
Aravind, V., and Kurian, J., "Mixing Enhancement by Strut based Injection in Supersonic Flow", 25th International Symposium on Shock Waves, Bangalore, July 17-22, 2005.
National Conference
Panigrahi, C., Vaidyanathan, A., and Nair, M.T., “Cavity Induced Pressure Oscillations within a subcavity”, CP-12-paper number 15, 20th Annual CFD Symposium, NAL Bangalore, Aug 9-10, 2018
Ahmed, A., Vaidyanathan, A., and Srinivasan, K., “Experimental and Numerical Investigation of Impinging Jets ”, paper no. 83, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Panigrahi, C., Vaidyanathan, A., and Nair, M.T., “Effects of Subcavity in Supersonic Flow over a cavity”, paper no. 75, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Prajith Kumar, K.,P., Takhur, B., Kumar, S.A., and Vaidyanathan, A., “Study of Impinging Liquid in Scramjet Engine using Deep Learning Techniques”, paper no. 74, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Sashidar, W., Vinil Kumar, R.R., Kumar, P.P., and Vaidyanathan, A., “Planar Laser-Induced Fluorescence (PLIF) Visualisation of Two Phase Annular flow”, paper no. 71, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Kumar, S.A., Ninish, S., Vaidyanathan, A., and Tharakan, J.T.,, “Effect of Blockage Factor on Liquid-Liquid Cross Flow Pintle Injector Spray Characteristics”, paper no. 81, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Maharshi, G.K., Vaidyanathan, A., Muthukumaran, C.K., and Nandakumar, K., “Quantification of Hydroxyl(OH) radicals in Laminar Flat Flame and Inverse Diffusion Flame of Coaxial Injector”, paper no. 65, ASET-2018, National conference on Future Directions in Propulsion, LPSC Valiyamala, May 11-12, 2018
Aji, A.M., Vaidyanathan, A., and Sashidharan, V., " Performance Loss Associated with Wake Evacuation Effect in ED Nozzle", CP-26-paper number 16, 19th Annual CFD Symposium, NAL Bangalore, Mar 15-17, 2017
Saxon, A. M., Kumar, P.P., and Vaidyanathan, A., "Investigation of Heat Transfer Characterization of Methane in a Rocket Engine Cooling Channel Flow at Supercritical Pressure", NAPC-2017-168, 1st National Aerospace Propulsion Conference, IIT Kanpur, Mar 15-17, 2017
Ninish, S., Vaidyanathan, A., and Nandakumar, K., "Characterization of Pintle Injectors", NAPC-2017-125, 1st National Aerospace Propulsion Conference, IIT Kanpur, Mar 15-17, 2017
Mehta, H., Kevikumar, L., and Vaidyanathan, A., "Cavity Flow Characterization using Phase Locked High Speed Schlieren and Unsteady Pressure Measurements", NAPC-2017-072, 1st National Aerospace Propulsion Conference, IIT Kanpur, Mar 15-17, 2017
Mohan, K., Munjal, P., and Vaidyanathan A., “Effect of pintle shape on internal shock sturcture of Expansion Deflection Nozzle", NSSW4-2016, 4th National Symposium on Shock Waves, Karunya University, Coimbatore, Feb 25-26, 2016
Mohan, K., Sashidharan, V., and Vaidyanathan A., “Flow and Internal shock sturcture development in Planar Expansion Deflection Nozzle", NSSW4-2016, 4th National Symposium on Shock Waves, Karunya University, Coimbatore, Feb 25-26, 2016
Gautam, T., Mohan, K., Lovejeet, G., and Vaidyanathan A., “Supersonic cavity flow oscillations", NSSW4-2016, 4th National Symposium on Shock Waves, Karunya University, Coimbatore, Feb 25-26, 2016
Lovejeet, G., Malhotra, A., and Vaidyanathan A., “Cavity Noise Control using cavity Floor Injection", NSSW4-2016, 4th National Symposium on Shock Waves, Karunya University, Coimbatore, Feb 25-26, 2016
Mohan, K., Saravanan, S. A., Jarpala, R., and Vaidyanathan A., “Experimental and CFD study on shock structure development in Planar Expansion Deflection Nozzle", FMFP 2015-205, 42nd National Conference on Fluid Mechanics and Fluid Power, NITK Surathkal, Dec 14-16, 2015
Mohan, K., Munjal, P., and Vaidyanathan A., “Comparison of performance and altitude compensation capability of ED nozzles with Bell nozzles”, SAROD 2015-CP184 , 7th Symposium on Applied Aerodynamics and Design of Aerospace Vehicles (SAROD 2015), VSSC Thiruvananthapuram, 3-5 Dec 2015
Malhotra, A., Mohan, K., and Vaidyanathan A., “ Aft wall offset in cavities:A passive suppression mechanism”, SAROD 2015-CP231 , 7th Symposium on Applied Aerodynamics and Design of Aerospace Vehicles (SAROD 2015), VSSC Thiruvananthapuram, 3-5 Dec 2015
Malhotra, A., Lovejeet, G., and Vaidyanathan A., “Investigation on the occurence of shock train phenomena in supersonic flow over cavity”, SAROD 2015-CP258 , 7th Symposium on Applied Aerodynamics and Design of Aerospace Vehicles (SAROD 2015), VSSC Thiruvananthapuram, 3-5 Dec 2015
Malhotra, A., Mohan, K., and Vaidyanathan A., “Effect of Secondary Injection on Cavities in Supersonic Flow”, NCWT-04-CP29 , National Conference on Wind Tunnel Testing (NCWT04), DRDL Hyderabad, , Mar 20-21, 2015
Kannayain, K., and Vaidyanathan A., “Qualitative OH - PLIF Measurements in non- premixed flame”, NLS 23-CP-09-22, DAE - BRNS National Laser Symposium (NLS-23), Tirupati, Dec 3-6, 2014
Agarwal, H., and Vaidyanathan A., “Jet Instability of Non-Circular Jets”, NPC-2013-12006, National Propulsion Conference, IIT Madras, Feb 2013
Anurag, Gupta, N. U. V. S., and Vaidyanathan, A., “Investigation of Flow Separation in Double Divergent Nozzle”, NPC-2013-No 15006, National Propulsion Conference, IIT Madras, Feb 2013
Maurya, P. K., Kiran, J. R., and Vaidyanathan, A., “ Three Dimensional Effects inside a Supersonic Cavity Flow Field with Secondary Injection”, NPC 2013 – 14021, National Propulsion Conference, IIT Madras, Feb 2013
Nayak, A. G., Kumar, V., and Vaidyanathan, A., " Flow Visualization of Gas Centered Swirl Coaxial Injectors", National Conference in Space Transportation Systems: Opportunities and Challenges, VSSC Thiruvananthapuram, 16-18 Dec 2011
Peer Reviewed Journals:
Chakraborty, M., Vaidyanathan, A., and Desikan, S.L.N., " Experiments on atomizaion and spray characteristics of an effervescent strut injector", Physics of Fluids, 33(1), 017103, 2021
Kumar, K.P.P., and Vaidyanathan, A., “Medium Independent Jet (MI-Jet) Engine”, Propulsion and Power Research, 9(3), 240-254, 2020
Ayyappan, D., Kumar, S. A., Vaidyanathan, A., and Nandakumar, K., “Study on instability of circular liquid jets at subcrtical to supercritical conditions using dynamic mode decomposition”, Physics of Fluids , 31(1), 014107, 2020
Verma, N., and Vaidyanathan, A., “Liquid jet break up behind a pylon in a supersonic flow”, Experimental Thermal and Fluid Science, 113 ,109984, 2020
Panigrahi, C., Vaidyanathan, A., and Nair, M.T., “Effect of subcavity in supersonic cavity flow”, Physics of Fluids , 31(3), 036101, 2019 (The article is also featuring in Editor’s picks)
Ayyappan, D., Vaidyanathan, A., Muthukuamaran, C.K., and Nandakumar, K., “Transition of subcritical liquid jets in single and multicomponent systems”, Physics of Fluids , 30(10), 104106, 2018
Arakkaparambil, M.,S., Kumar, P., and Vaidyanathan, A., “Computational Study of Heat Transfer Characteristics of Supercritical Methane Flow in the Coolant Channel of a Rocket Engine”, High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, 22 (2-3), pp.141-159, 2018
Ninish S., Vaidyanathan, A., and Nandakumar, K., “Spray Characteristics of Liquid-Liquid Pintle Injector”, Experimental Thermal and Fluid Science, 97 pp. 324–340, 2018
Lad, K.A., Vinil Kumar, R.R., and Vaidyanathan, A., " Experimental Study of Subcavity in Supersonic Cavity Flow", AIAA Journal, 56(5), pp. 1965-1977, 2018
Kumar, M., and Vaidyanathan, A., "Oscillatory mode transition for supersonic open cavity flows", Physics of Fluids, 30(2), 026101, 2018
Kumar, M., and Vaidyanathan, A., "On shock train interaction with cavity oscillations in a confined supersonic flow", Experimental Thermal and Fluid Science, 90, pp.260-274, 2018
Guatum, T., Lovejeet, G., and Vaidyanathan, A., "Experimental Study of Supersonic flow over cavity with aftwall offset and cavity floor injection", Aerospace Science and Technology, 70, pp.211-232, 2017
Muthukumaran, C.K., and Vaidyanathan, A.,"Mixing Nature of Supercritical Jet in Subcritical and Supercritical Conditions", Journal of Propulsion and Power, 33(4), pp. 842-857, 2017
Muthukumaran, C.K., and Vaidyanathan, A., “Initial Instability on round liquid jet at subcritical and supercritical environments”, Physics of Fluids, 28 (7), 074104, 2016
Kannayain, K., Banda, M.V.K., and Vaidyanathan, A., "Planar Sauter Mean Diamter Measurements in Liquid Centered Swirl Coaxial Injector using Laser Induced Fluorescence, Mie Scattering and laser diffraction techniques", Acta Astronautica, 123, pp. 257-270, 2016
Malhotra, A., and Vaidyanathan, A., “Aft wall offset effects on open cavities in confined supersonic flow ”, Experimental Thermal and Fluid Science, 74, pp. 411-428, 2016
Agarwal, D. K., Vaidyanathan, A., and Kumar S.S.,"Experimental Investigation on Thermal Performance of Kerosene-Graphene Nanofluid", Experimental Thermal and Fluid Science, 71, pp. 126-137, 2016
Viswakarma, M., and Vaidyanathan, A., “Experimental Study of Mixing Enhancement Using Pylon in Supersonic Flow”, Acta Astronautica, 118, pp. 21-32, 2016
Maurya, P.K., C. Rajeev, R.R. Vinil Kumar, and Vaidyanathan, A., “Effect of aft wall offset and ramp on pressure oscillation from confined supersonic flow over cavity”, Experimental Thermal and Fluid Science, 68, pp. 559-573, 2015
Arora, R., and Vaidyanathan, A., “ Experimental investigation of flow through planar double divergent nozzle”, Acta Astronautica, 112, pp. 200–216, 2015
Agarwal, D. K., Vaidyanathan, A., and Kumar S.S., “Investigation on Convective Heat Transfer Behaviour of Kerosene- Al2O3 Nanofluid”, Applied Thermal Engineering, 84, pp. 64-73, 2015
Muthukumaran, C.K., and Vaidyanathan, A., “Experimental study of elliptical jet from supercritical to subcritical conditions using planar laser induced fluorescence”, Physics of Fluids , 27 (3), 034109, 2015
Muthukumaran, C. K., and Vaidyanathan, A., “Experimental study of elliptical jet from sub to supercritical conditions”, Physics of Fluids , 26 (4), 044104, 2014
Agarwal, D. K., Vaidyanathan, A., and Kumar S.S., “ Synthesis and Characterization of kerosene/Alumina Nanofluids”, Applied Thermal Engineering, 60, pp. 275-284, 2013
Vaidyanathan, A., Gustavsson, J., and Segal, C., "One and Three Dimensional Wall Heat Flux Calculations in a O2/H2 System", Journal of Propulsion and Power, 26 (1), pp. 186-189, 2010
Vaidyanathan, A., Gustavsson, J., and Segal, C., "Oxygen/Hydrogen-Planar-Laser-Induced Fluorescence Measurements and Accuracy Investigation in High-Pressure Combustion", Journal of Propulsion and Power, 25 (4), pp. 864-874, 2009
Conley, A., Vaidyanathan, A., and Segal, C., "Heat Fluxes Measurements for a GH2/GO2 Single-Element, Shear Injector”, Journal of Spacecraft and Rockets, 44 (3), pp. 633-639, 2007
