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Dr. Srikrishnan A. R.

Chairperson, Department of Aerospace Engineering, School of Engineering, Coimbatore | Professor, Department of Aerospace Engineering, School of Engineering, Coimbatore

Qualification: Ph.D
ar_srikrishnan@cb.amrita.edu
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Research Interest: High Speed Flows, Gas Dynamics, Propulsion, Applied CFD, Heat Transfer, Energy
Date of Joining: 05/06/2012
Nature of Association: Regular

Bio

Dr. Srikrishnan A. R. completed his Ph. D. from IIT Madras in 1996, in the field of fuel-air mixing and combustion in supersonic flows as applied to advanced aerospace propulsion systems.  He Joined the department of Aerospace Engineering, Amrita Vishwa Vidyapeetham in June 2012. He has been serving as reviewers for international journals including the Journal of Aerospace Engineering, Institution of Mechanical Engineers, UK.

Fields of Expertise: Heat Transfer, Combustion, Gas Dynamics, Air-breathing Propulsion Systems, Computational Fluid Dynamics (CFD).

Industrial Experience:

Institution Period: 1996-2012 (16 Years)
ANSYS FLUENT India, Pune
Highest position held: Director – Development
Headed a technical division and guided Validation and Testing studies
in CFD as applied to fundamental and industrial systems

Academic Background:

Ph.D. IIT, Madras Fuel-Air Mixing and Combustion
in Supersonic Flows
M.Tech. IIT, Madras Combustion and Propulsion
B.Tech. University of Calicut Mechanical Engineering
Publications

Journal Article

Year : 2023

Numerical Study of Wall Heat Transfer Effects on Flow Separation in a Supersonic Overexpanded Nozzle

Cite this Research Publication : Murugesan, P., Srikrishnan, A.R., Mohammad, A., Velamati, R.K., Numerical Study of Wall Heat Transfer Effects on Flow Separation in a Supersonic Overexpanded Nozzle, Energies, 2023, 16(4), 1762

Publisher : MDPI

Year : 2023

Enhancement of Film Cooling Effectiveness in a Supersonic Nozzle

Cite this Research Publication : Somasekharan, N., Srikrishnan, A.R., Kumar, H.S., Mohammad, A., Velamati, R.K., Enhancement of Film Cooling Effectiveness in a Supersonic Nozzle, Entropy, 2023, 25(3), 481, 2023, 25(3), 481

Publisher : MDPI

Year : 2022

Transient vortex shedding behaviour of non-reacting flow over V-gutter bluff bodies with a central slit

Cite this Research Publication : Luckachan, K.G., Raja Sekar, K., Srikrishnan, A.R., Kannan, R., Transient vortex shedding behaviour of non-reacting flow over V-gutter bluff bodies with a central slit, Luckachan, K.G., Raja Sekar, K., Srikrishnan, A.R., Kannan, R. International Journal of Ambient Energy, 2022, 43(1), pp. 8686–8696

Publisher : Taylor and Francis

Year : 2022

Unsteady dynamics in a subsonic duct flow with a bluff body

Cite this Research Publication : George, L.K., Karthick, S.K., Srikrishnan, A.R., Kannan, R., Unsteady dynamics in a subsonic duct flow with a bluff body, Physics of Fluids, 2022, 34(6), 067114

Year : 2022

Novel thermally insulated ultra-lightweight fireproof and high impact resistance advanced hybrid composite

Cite this Research Publication : Jennifer Vinodhini, Sudheendra K, Shantanu Bhowmik, Srikrishnan A.R., Prakash D Trivedi, Jaimin C Zaveri and Amit Kundu, "Novel thermally insulated ultra‐lightweight fireproof and high impact resistance advanced hybrid composite," Journal of Polymer Engineering and Science, (2022), http://doi.org/10.1002/pen.26082

Publisher : Wiley Online Library

Year : 2020

Studies on supersonic cold spray deposition of microparticles using a bell-type nozzle

Cite this Research Publication : K.Harihara Sudhan, G.Krishna Prasad, Nikhil K.Kothurkar, A.R.Srikrishnan. Studies on supersonic cold spray deposition of microparticles using a bell-type nozzle. Surface and Coatings Technology, 2020, 383:125-244

Publisher : Elsevier

Year : 2019

Mixing studies in turbulent oxy-methane jets with and without reaction

Cite this Research Publication : J. Tamal, Dr. Srikrishnan A. R., Deependran, B., and R. Kumar, A., “Mixing studies in turbulent oxy-methane jets with and without reaction”, Lecture Notes in Mechanical Engineering, pp. 707-718, 2019.

Publisher : Lecture Notes in Mechanical Engineering, Pleiades Publishing

Year : 2018

Studies on Effusion Cooling: Impact of Geometric Parameters on Cooling Effectiveness and Coolant Consumption

Cite this Research Publication : V. Venkatesh, Sriraam J., Bala Vignesh D., K., S., Dr. Ratna Kishore V., Dr. Srikrishnan A. R., Dr. Balajee Ramakrishnananda, and Suresh Batchu, “Studies on Effusion Cooling: Impact of Geometric Parameters on Cooling Effectiveness and Coolant Consumption”, Aerospace Science and Technology, vol. 77, pp. 58 - 66, 2018.

Publisher : Aerospace Science and Technology

Year : 2018

Mixing enhancement using chevron nozzle: studies on free jets and confined jets

Cite this Research Publication : H. G Subramanian, Nagarjun, C. H. V. S., Kumar, K. V. Satish, B Kumar, A., Srikanth, V., and Dr. Srikrishnan A. R., “Mixing enhancement using chevron nozzle: studies on free jets and confined jets”, Sādhanā, vol. 43, p. 109, 2018.

Publisher : Sādhanā, Indian Academy of Sciences

Year : 2017

Vortex Formation during Draining from Cylindrical Tanks: Effect of Drain Port Eccentricity

Cite this Research Publication : A. R. Kumar, Nair, R. R., Prabhu, M., and Dr. Srikrishnan A. R., “Vortex Formation during Draining from Cylindrical Tanks: Effect of Drain Port Eccentricity”, Journal of Aerospace Engineering, vol. 30, 2017.

Publisher : Journal of Aerospace Engineering

Year : 2017

Combined Effect of Surface Roughness and Wake Splitter Plate on the Aerodynamic Characteristics of a Circular Cylinder

Cite this Research Publication : S. Iyer, K, A., R, A., and Dr. Srikrishnan A. R., “Combined Effect of Surface Roughness and Wake Splitter Plate on the Aerodynamic Characteristics of a Circular Cylinder”, IOP Conference Series: Materials Science and Engineering, vol. 234, p. 012007, 2017.

Publisher : IOP Conference Series: Materials Science and Engineering

Year : 2017

Numerical Analysis of Effects of Turbine Blade Tip Shape on Secondary Losses

Cite this Research Publication : R. S. Sarath, R. Kumar, A., Prasad, B. V. S. S. S., and Dr. Srikrishnan A. R., “Numerical Analysis of Effects of Turbine Blade Tip Shape on Secondary Losses”, Fluid Mechanics and Fluid Power – Contemporary Research, Part of the Lecture Notes in Mechanical Engineering book series (LNME), vol. Part F8, pp. 871-879, 2017.

Publisher : Fluid Mechanics and Fluid Power – Contemporary Research, Part of the Lecture Notes in Mechanical Engineering book series (LNME), Springer India

Year : 2016

Vortex Suppression through Drain Port Sizing

Cite this Research Publication : R. A. Kumar, .J, J., Shaji, R. Korah, and Dr. Srikrishnan A. R., “Vortex Suppression through Drain Port Sizing”, ASCE Journal of Aerospace Engineering, Journal of Aerospace Engineering, vol. 29, no. 4, 2016.

Publisher : ASCE Journal of Aerospace Engineering, Journal of Aerospace Engineering.

Year : 2004

Putting Brakes – an analysis of the fundamentals involved in aerobraking

Cite this Research Publication : Dr. Srikrishnan A. R., “Putting Brakes - an analysis of the fundamentals involved in aerobraking”, Article in Times Fluid Power Journal, 2004.

Publisher : Article in Times Fluid Power Journal

Year : 1999

Comparative Experimental study of Supersonic Combustors

Cite this Research Publication : Dr. Srikrishnan A. R., Kurian, J., and Sriramulu, V., “Comparative Experimental study of Supersonic Combustors”, Comparative Experimental study of Supersonic Combustors, 1999.

Publisher : Comparative Experimental study of Supersonic Combustors XIV ISABE, Florence,Italy

Year : 1996

Experimental study on mixing enhancement by petal nozzle in supersonic flow

Cite this Research Publication : Dr. Srikrishnan A. R., Kurain, J., and Sriramulu, V., “Experimental study on mixing enhancement by petal nozzle in supersonic flow”, Journal of Propulsion and PowerJournal of Propulsion and Power, vol. 12, no. 1, pp. 165 - 169, 1996.

Publisher : American Institute of Aeronautics and Astronautics

Year : 1996

An Experimental Study of Thermal Mixing and Combustion in Supersonic Flows

Cite this Research Publication : Dr. Srikrishnan A. R., J., K., and Sriramulu, V., “An Experimental Study of Thermal Mixing and Combustion in Supersonic Flows”, Journal of Combustion and Flame, vol. 107, no. 4, pp. 464-474, 1996.

Publisher : Journal of Combustion and Flame

Year : 1996

An experimental investigation of thermal mixing and combustion in supersonic flows

Cite this Research Publication : Dr. Srikrishnan A. R., Kurian, J., and Sriramulu, V., “An experimental investigation of thermal mixing and combustion in supersonic flows”, Combustion and Flame, vol. 107, pp. 464 - 474, 1996.

Publisher : Combustion and Flame

Year : 1996

Enhancement of thermal mixing in coaxial supersonic jets

Cite this Research Publication : Dr. Srikrishnan A. R., J, K., and V, S., “Enhancement of thermal mixing in coaxial supersonic jets”, Journal of Propulsion and Power - J PROPUL POWER, vol. 12, no. 4, pp. 730-735, 1996.

Publisher : Journal of Propulsion and Power - J PROPUL POWER

Conference Proceedings

Year : 2017

Numerical Study of Effect of Base Dome Radius on Vortex Formation During Tank Draining

Cite this Research Publication : G. T. H, Dr. Srikrishnan A. R., and Raghavan, A., “Numerical Study of Effect of Base Dome Radius on Vortex Formation During Tank Draining”, Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Kollam, Kerala, India. 2017.

Publisher : Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power

Year : 2017

Numerical Study of Effect of Base Dome Radius on Vortex Formation During Tank Draining

Cite this Research Publication : Gopikrishnan T H, Dr. Srikrishnan A. R., and Raghavan, A., “Numerical Study of Effect of Base Dome Radius on Vortex Formation During Tank Draining”, Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Kollam, Kerala, India. 2017.

Publisher : Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power

Year : 2017

A Numerical Investigation on Flow Over Curved Plates

Cite this Research Publication : A. K. Damu Murali, R Kumar, A., and Dr. Srikrishnan A. R., “A Numerical Investigation on Flow Over Curved Plates”, Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Kollam, Kerala, India. 2017.

Publisher : Proceedings of the 44th National Conference on Fluid Mechanics and Fluid Power

Year : 2014

Studies on Mass-spillage and Stagnation Pressure Loss in Intakes of SCRAMJET Propulsion Systems

Cite this Research Publication : V. U, Raja, D., R, R., Chaturvedi, S., and Dr. Srikrishnan A. R., “Studies on Mass-spillage and Stagnation Pressure Loss in Intakes of SCRAMJET Propulsion Systems”, 6th International Conference ICTACEM, IIT Kharagpur, December, 2014. 2014.

Publisher : 6th International Conference ICTACEM

Year : 2014

Numerical Analysis of Effects of Turbine Blade Tip Shape on Secondary Losses

Cite this Research Publication : S. R. S, R, A. Kumar, BVSSS, P., and Dr. Srikrishnan A. R., “Numerical Analysis of Effects of Turbine Blade Tip Shape on Secondary Losses”, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power (FMFP) 2014. Indian Institute of Technology, Kanpur, 2014.

Publisher : 5th International and 41st National Conference on Fluid Mechanics and Fluid Power (FMFP) 2014

Year : 2014

Laminar and Transitional Shock-Boundary Layer Interaction in Hypersonic Flows: A Study from Energy Perspective

Cite this Research Publication : U. Viverjita, Dr. Srikrishnan A. R., and , “Laminar and Transitional Shock-Boundary Layer Interaction in Hypersonic Flows: A Study from Energy Perspective”, 5th International Conference on Fluid Mechanics and Fluid Power. IIT Kanpur, 2014.

Publisher : 5th International Conference on Fluid Mechanics and Fluid Power

Year : 2014

Effect of eccentric drain port size on vortex formation during draining from cylindrical tanks

Cite this Research Publication : J. Josy, R. Kumar, A., Dr. Srikrishnan A. R., Shaji, R. K., and .H.L.Gowda, B., “Effect of eccentric drain port size on vortex formation during draining from cylindrical tanks”, 5th International and 41st National Conference on Fluid Mechanics and Fluid Power (FMFP) 2014. Indian Institute of Technology Kanpur, 2014.

Publisher : 5th International and 41st National Conference on Fluid Mechanics and Fluid Power (FMFP)

Year : 2014

Aerothermodynamics of Shock-Boundary Layer Interaction in Hypersonic Flow: A Study on Stagnation Pressure Loss and the Extend of Separation Zone

Cite this Research Publication : U. Viverjita and Dr. Srikrishnan A. R., “Aerothermodynamics of Shock-Boundary Layer Interaction in Hypersonic Flow: A Study on Stagnation Pressure Loss and the Extend of Separation Zone”, 3rd National Symposium on Shock Waves. IIT Bombay, 2014.

Publisher : 3rd National Symposium on Shock Waves

Year : 2013

Validation of CFD Software: A Study of Issues Specific to Simulation of High Mach number Flows

Cite this Research Publication : Dr. Srikrishnan A. R., “Validation of CFD Software: A Study of Issues Specific to Simulation of High Mach number Flows”, International Conference on CAE. IIT Madras, India, 2013.

Publisher : International Conference on CAE

Year : 2013

Effect Of Relative Drain Port Size On Vortex Formation In Cylindrical Tanks

Cite this Research Publication : R. Korah Shaji, Gowda, B. H. L., Joshy, P. J., Dr. Srikrishnan A. R., and Kumar, R. A., “Effect Of Relative Drain Port Size On Vortex Formation In Cylindrical Tanks”, International Conference on Fluid Dynamics. Sendai, Miyagi, Japan, 2013.

Publisher : International Conference on Fluid Dynamics

Year : 2003

Numerical Study of Thrust Performance of Supersonic Nozzles with Separated Flow

Cite this Research Publication : S. Dhar and Dr. Srikrishnan A. R., “Numerical Study of Thrust Performance of Supersonic Nozzles with Separated Flow”, 6th Annual CFD Symposium, CFD Division of AeSI. 2003.

Publisher : 6th Annual CFD Symposium, CFD Division of AeSI

Year : 2002

CFD Analysis of Film Cooling of a Cylindrical Leading Edge with Compound Angle Injection

Cite this Research Publication : B. Singh Chufal and Dr. Srikrishnan A. R., “CFD Analysis of Film Cooling of a Cylindrical Leading Edge with Compound Angle Injection”, International Conference on Scientific & Engineering Computation. Institute of High Performance Computing, Singapore, 2002.

Publisher : Institute of High Performance Computing, Singapore

Year : 2000

A Numerical Study of Species Mixing in Co-axial Supersonic Jets

Cite this Research Publication : R. Ch. and Dr. Srikrishnan A. R., “A Numerical Study of Species Mixing in Co-axial Supersonic Jets”, Annual CFD Symposium, CFD Division of AeSI. 2000.

Publisher : CFD Division of AeS

Year : 1994

Stagnation Pressure loss associated with Mixing Enhancement in Supersonic Flow

Cite this Research Publication : Dr. Srikrishnan A. R., Kurien J., and Sriramulu V., “Stagnation Pressure loss associated with Mixing Enhancement in Supersonic Flow”, Proceedings of the 2nd National Conference on Air Breathing Engines and Aerospace Propulsion. VSSC, Thiruvananthapuram, 1994.

Publisher : Proceedings of the 2nd National Conference on Air Breathing Engines and Aerospace Propulsion, VSSC, Thiruvananthapuram

Year : 1992

Theoretical Investigation of Base Flows and Supersonic External Combustion

Cite this Research Publication : Dr. Srikrishnan A. R., K.A., D., and V, S., “Theoretical Investigation of Base Flows and Supersonic External Combustion”, Proceedings of XII National Conference on I.C.Engines and Combustion. pp. 591-596, 1992.

Publisher : Proceedings of XII National Conference on I.C.Engines and Combustion

Research

Research Grants

  • ISRO/LPSC: Coking studies in semi-cryogenic engines
  • DRDO/GTRE: Studies on Effusion Cooling in Aircraft Combustors
  • RAE UK: Transforming Global Health through Cook Stove Modelling
  • IGCAR: Pool Thermal Hydraulics Investigations of FBR
  • ISRO/LPSC: Analysis of throat film cooling for Semicryogenic Thrust chamber (Ongoing)

Research Guidance

Ph. D. (On-going)

1. Shock-Induced Separation in Rocket Nozzles

  1. A study with immense application potential in rocket technology. The fundamental issue of shock induced boundary layer separation is being investigated with emphasis on a novel approach to control it.
  2. The initial results, based on numerical simulations are encouraging and are being explored further.

2. Flame Stabilization in Afterburners using Metallic Foams

  1. The study aims at an innovative approach to flame stabilization in high-speed flows. An important field of application is turbojet engines with after burners. The use of metal foams, which have several advantages over conventional methods, is being studied from the perspective of energy efficiency and effectiveness. The study involves both experimental and numerical investigations.

3. Optimization studies on material management for aircraft maintenance

Recent Manuscript Review Activities (for International Journals and Conferences)

  1. June 2017: Journal – PART G: Journal of Aerospace Engineering, Institution of Mechanical Engineers, UK
  2. July 2017: PART G: Journal of Aerospace Engineering, Institution of Mechanical Engineers, UK
  3. Dec. 2017: International Conference on Computational Methods in Engineering and Health Sciences, Manipal University
  4. March 2017: Journal of the National Academy of Sciences
  5. April 2018: Journal of Aerospace Engineering (Part G), Institution of Mechanical Engineers, UK
Funded Projects
Domain of Study Funding Agency
Studies on the Onset of Coking in Sem-cryogenic Rocket Engines ISRO
Studies on Effusion Cooling of Gas Turbine Combustors GTRE – DRDO
Studies on modeling of Thermal Striping and Gas Entrainment in PFBR IGCAR
Modeling of Combustion in Biomass-fueled Cook stoves RAE, London, Uk
Invited Talks/Lectures
  1. Talk delivered in CEP by Heat Transfer DRDL Hyderabad, on Studies on Heat Transfer in High Speed Flows & Propulsion Systems” – September, 2023
  2. Talk delivered in STEM@NEP MASTERCLASS - AEROSPACE ENGINEERING: Experiential Learning : Some pedagogical observations focused on Aerospace Engineering Education – June, 2022
  3. CFD in Mechanical Engineering (Introductory lecture for UG Students) at IIT Palakkad, 2017.
  4. Session talk at 44th National Conference on Fluid Mechanics and Fluid Power (FMFP) at Amrita Campus, Amritapuri, December 2017.
  5. Application of CFD in Engineering, at IIT RAE, London, Uk, Palakkad – 2016.
  6. Invited talk at AICTE Funded work shop in Heat Transfer at Coimbatore Institute of Technology, 2016.
  7. Invited talks on CFD in Mechanical Engineering Design -IIT Palakkad (2015, 2016)
  8. Computations Methods in Engineering Design at IIT, Palakkad – 2015.
Subjects Taught

UG Courses:

Theory Courses handled from 2012:

  1. Introduction to Aerospace Propulsion
  2. Air Breathing Engines
  3. Heat Transfer
  4. Rocket and Spacecraft Propulsion
  5. Compressible Fluid Flows

PG/PhD Courses:

  1. Advanced Gas Dynamics
  2. Aircraft Propulsion
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