Department of Ocean Engineering | Indian Institute Of Technology Madras , Chennai
team

Dr. Nallayarasu S

Professor

Ph.D., National University of Singapore, 1994

M.Tech., Indian Institute of Technology Madras, 1990

B.Tech., Madurai Kamaraj University, 1988

+91- 44- [22]-57 [48]-19

nallay[at]iitm[.]ac [.]in

Personal Link

DOE 211

  • Analysis and design of offshore structures
  • Wave-structure interaction
  • Reliability in offshore structural design
  • Behaviour of stiffener tubular joints
  • Offshore wind energy
  • Submarine pipelines and risers
  • Hydrodynamic response of spar hulls

  • 2012- CURRENT, Professor - Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600036 INDIA
  • 2006, Associate Professor - Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600036 INDIA
  • 2002, Head, Offshore structures - Aker Solutions, Singapore
  • 1997,Lead Engineer - Aker Solutions, Singapore
  • 1994, Senior Engineer - Aker Solutions, Singapore
  • 1990, Engineer - Engineers India Limited, New Delhi

  1. Frequency-domain analysis of vortex-induced vibration of flexible cantilever cylinder with various aspect ratios

    Author: Srinivasan, Karthikeyan and Prethiv Kumar, R. and Nallayarasu, S. and Liu, Yu

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2024.120204

    Year: 2025

  2. Investigation on ship mooring forces including passing ship effects validated by experiments

    Author: Sreedevi, R. and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2023.115004

    Year: 2023

  3. Investigation of heave damping characteristics of buoy form spar with heave plate near the free surface using CFD validated by experiments

    Author: Hegde, Pooja and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2022.2133882

    Year: 2023

  4. CFD SIMULATION OF VORTEX-INDUCED VIBRATION OF A FLEXIBLE RISER WITH BUOYANCY MODULE UNDER UNIFORM FLOW USING A TWO-WAY COUPLED MODEL

    Author: Karthikeyan, S. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2023-103724

    Year: 2023

  5. Experimental and numerical investigation on reserve strength of jackets with single diagonal and X brace configurations

    Author: Renugadevi, A. and Nallayarasu, S. and Karunanithi, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2022.2052481

    Year: 2023

  6. SYSTEM RELIABILITY ASSESSMENT OF JACKET STRUCTURES USING FAULT TREE ANALYSIS METHOD

    Author: Renugadevi, A. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2023-104486

    Year: 2023

  7. Hydrodynamic response of buoy form spar with heave plate near the free surface validated with experiments

    Author: Hegde, Pooja and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2022.113580

    Year: 2023

  8. CFD simulation of vortex-induced vibration of an elastic cylinder in subcritical flow regime using a two-way coupled model validated by experiment

    Author: Karthikeyan, S. and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2023.113956

    Year: 2023

  9. Simplified methods for the strength of ring-stiffened tubular T/Y-joints

    Author: Masilamani, Ragupathi and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2022.2110413

    Year: 2023

  10. Development of a methodology to estimate fatigue damage in tubular joints of jackets due to direct wave loads in splash zone

    Author: Dash, Sambit Supriya and Nallayarasu, S.

    Journal: Oceans Conference Record (IEEE)

    DOI/Link: 10.1109/OCEANS47191.2022.9977238

    Year: 2022

  11. Ultimate capacity of cracked tubular T-joints reinforced with grouted clamp connection in axial tension

    Author: Vignesh Chellappan, N. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2022.2027119

    Year: 2022

  12. Numerical investigation of VIV responses of the flexible riser system modelled as tensioned cable subjected to shear flow

    Author: Prethiv Kumar, R. and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2022.112659

    Year: 2022

  13. Parametric study on passing ship effects on moored ship using CFD simulation validated with experiments

    Author: Sreedevi, R. and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2022.112349

    Year: 2022

  14. Development of parametric equations for ultimate capacity of internally ring-stiffened tubular T/Y-joints under axial and moment load

    Author: Masilamani, Ragupathi and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2021.1884810

    Year: 2022

  15. VIV response of risers with large aspect ratio and low rigidity using a numerical scheme based on wake oscillator model

    Author: Prethiv Kumar, R. and Nallayarasu, S.

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2021.103011

    Year: 2022

  16. Experimental and numerical investigation on the suitability of semi-submersible floaters to support vertical axis wind turbine

    Author: Rajeswari, K. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2021.1938800

    Year: 2022

  17. Experimental and numerical investigation on stress concentration at brace-ring intersection (BRI) of internally ring stiffened tubular T-joints

    Author: Krishna, G. Chandra Sai and Nallayarasu, S.

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2022.103288

    Year: 2022

  18. Experimental and numerical investigation on axial load transfer across cracked tubular joint strengthened with grouted clamps of a jacket in under water condition

    Author: Vignesh Chellappan, N. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2021.1937879

    Year: 2022

  19. Parametric evaluation of forces due to a passing ship on a moored ship using CFD simulation

    Author: Radhakrishnan, Sreedevi and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2021-62555

    Year: 2021

  20. Evaluation of residual life of existing offshore platforms in Western Offshore, India

    Author: Renugadevi, A. and Nallayarasu, S. and Karunanithi, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2021-62714

    Year: 2021

  21. CFD approach to heave damping of spar with heave plates with experimental validation

    Author: Rao, Mahesh J. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2020.102517

    Year: 2021

  22. Estimation of probability of fatigue failure on tubular joints

    Author: Lokesh, N. and Nallayarasu, S. and Karunanithi, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2021-62724

    Year: 2021

  23. Experimental and numerical investigation of ultimate strength of ring-stiffened tubular T-joints under axial compression

    Author: Masilamani, Ragupathi and Nallayarasu, Seeninaidu

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2021.102576

    Year: 2021

  24. Parametric evaluation of Stress Concentration Factor (SCF) at brace - Chord intersection of a ring stiffened tubular joint

    Author: Krishna, G. Chandra Sai and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2021-62704

    Year: 2021

  25. Hydrodynamic response of three- and four-column semi-submersibles supporting a wind turbine in regular and random waves

    Author: Rajeswari, K. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2020.1806681

    Year: 2021

  26. Hydrodynamic response of buoy form spar with heave plate near free surface

    Author: Hegde, Pooja and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2021-62387

    Year: 2021

  27. Numerical and experimental studies of heave damping and added mass of spar with heave plates using forced oscillation

    Author: Rao, Mahesh J. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2021.102667

    Year: 2021

  28. Experimental investigation of Vortex Induced Vibration of cross flow response for a Flexible Cable under uniform current

    Author: Kumar R, Prethiv and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    Year: 2020

  29. CFD simulation of the passing vessel effects on moored vessel

    Author: Nandhini, V. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2019.1606764

    Year: 2020

  30. Experimental and numerical investigations on VIV response of a pipe in shear flow

    Author: Karanjai, Dipanjan and Nallayarasu, S. and Bhattacharya, S.K.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    Year: 2020

  31. Residual strength of cracked tubular joint using nonlinear finite element analysis

    Author: Vignesh Chellappan, Natarajan and Nallayarasu, Seeninaidu

    Journal: Lecture Notes in Civil Engineering

    DOI/Link: 10.1007/978-981-13-3134-3_30

    Year: 2019

  32. Axial and moment carrying capacity of split sleeve grouted connections for repair of tubular members

    Author: Vignesh Chellappan, N. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2019-96267

    Year: 2019

  33. Passing vessel effect on mooring system of a berthed ship—A case study at jawahar dweep berth No: 5, Mumbai port

    Author: Sundar, Keshav and Nandhini, V. and Nallayarasu, S.

    Journal: Lecture Notes in Civil Engineering

    DOI/Link: 10.1007/978-981-13-3119-0_14

    Year: 2019

  34. Experimental investigation and CFD simulation of heave damping effects due to circular plates attached to spar hull

    Author: Philip, Nimmy Thankom and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2013.835146

    Year: 2019

  35. Numerical prediction of roll damping of ships with and without bilge keel

    Author: Irkal, Mohsin A.R. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/j.oceaneng.2019.03.027

    Year: 2019

  36. Effect of forward speed on roll damping of a container ship using URANS simulations

    Author: Irkal, Mohsin A. R. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Lecture Notes in Civil Engineering

    DOI/Link: 10.1007/978-981-13-3119-0_12

    Year: 2019

  37. Simulation of passing vessel effects on moored vessel mooring response due to environmental loads

    Author: Vasudevan, Nandhini and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2017-61593

    Year: 2017

  38. Experimental and numerical investigation on hydrodynamic response of buoy form spar under regular waves

    Author: Nallayarasu, S. and Kumar, N. Senthil

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2015.1099227

    Year: 2017

  39. Experimental and numerical investigation on hydrodynamic response of buoy form Spar under random waves

    Author: Nallayarasu, S. and Senthil Kumar, N.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2016.1218600

    Year: 2017

  40. CFD approach to roll damping of ship with bilge keel with experimental validation

    Author: Irkal, Mohsin A.R. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Applied Ocean Research

    DOI/Link: 10.1016/j.apor.2015.11.008

    Year: 2016

  41. Effect of Mathieu instability on motion response of Spar hull with heave damping plate

    Author: Nallayarasu, S. and Mathai, Tom P.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2015.1073866

    Year: 2016

  42. Experimental and numerical investigation on the effect of varying hull shape near the water plane on the mathieu-type instability of spar

    Author: Senthil Kumar, N. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2016-54779

    Year: 2016

  43. Assessment of nonlinear heave damping model for spar with heave plate using free decay tests

    Author: Rao, Mahesh J. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2016-54404

    Year: 2016

  44. CFD simulation of roll damping characteristics of a ship mid-section with bilge keel

    Author: Irkal, Mohsin A. R. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2016-54342

    Year: 2016

  45. The effect of moonpool and damping plate on damping characteristics of Spar hulls using CFD simulation

    Author: Tom, P.M. and Nallavarasu, S.

    Journal: RINA, Royal Institution of Naval Architects - International Conference on Computational and Experimental Marine Hydrodynamics, MARHY 2014

    Year: 2014

  46. Experimental and CFD simulation of roll motion of ship with bilge keel

    Author: Irkal Mohsin, A.R. and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: RINA, Royal Institution of Naval Architects - International Conference on Computational and Experimental Marine Hydrodynamics, MARHY 2014

    Year: 2014

  47. Effect of hull geometry on the hydrodynamic response of spar in regular waves

    Author: Nallayarasu, S. and Sreeraj, R. and Murali, Manusha

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2012.704172

    Year: 2014

  48. Heave damping characteristics of a buoy form Spar by CFD simulation and experimental studies

    Author: Kumar, N. Senthil and Nallayarasu, S.

    Journal: RINA, Royal Institution of Naval Architects - International Conference on Computational and Experimental Marine Hydrodynamics, MARHY 2014

    Year: 2014

  49. CFD simulation and experimental studies on frequency and amplitude dependency of heave damping of Spar hull with and without heave plate

    Author: Rao, J. Mahesh and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: RINA, Royal Institution of Naval Architects - International Conference on Computational and Experimental Marine Hydrodynamics, MARHY 2014

    Year: 2014

  50. Hydrodynamic response of spar hulls with heave damping plate using simplified approach

    Author: Nallayarasu, S. and Bairathi, Kirti

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2013.841331

    Year: 2014

  51. Experimental investigation of the wave slam and slap coefficients for array of non-circular section of offshore platforms

    Author: Sekhar, Gopu R. and Nallayarasu, S.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2012.661173

    Year: 2013

  52. Hydrodynamic response of spar and semi-submersible interlinked by a rigid yoke - Part I: Regular waves

    Author: Nallayarasu, S. and Prasad, P. Siva

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2011.552208

    Year: 2012

  53. Hydrodynamic response of spar and semi-submersible interlinked by a rigid yoke-Part II: Random waves

    Author: Nallayarasu, S. and Siva Prasad, P.

    Journal: Ships and Offshore Structures

    DOI/Link: 10.1080/17445302.2011.552209

    Year: 2012

  54. Damping characteristics of heave plates attached to spar hull

    Author: Philip, Nimmy Thankom and Nallayarasu, S. and Bhattacharyya, S.K.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2012-83290

    Year: 2012

  55. Influence of heave plate on hydrodynamic response of Spar

    Author: Sudhakar, S. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2011-49565

    Year: 2011

  56. Wave slam/slap loads on structural members in the air-gap

    Author: Sekhar, Gopu R. and Nallayarasu, S.

    Journal: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

    DOI/Link: 10.1115/OMAE2011-49507

    Year: 2011

  57. Analysis of submerged platform breakwater by eigenfunction expansion method

    Author: Cheong, Hin-Fatt and Shankar, N. Jothi and Nallayarasu, S.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/0029-8018(96)84407-6

    Year: 1996

  58. Estimation of incident and reflected waves in regular wave experiments

    Author: Nallayarasu, S. and Fatt, Cheong Hin and Jothi Shankar, N.

    Journal: Ocean Engineering

    DOI/Link: 10.1016/0029-8018(93)E0011-G

    Year: 1995

  59. Application of direct boundary integration method to wave diffraction by submerged bodies

    Author: Shankar, N. Jothi and Cheong, Hin‐Fatt and Nallayarasu, S.

    Journal: Communications in Numerical Methods in Engineering

    DOI/Link: 10.1002/cnm.1640101006

    Year: 1994

  60. Wave induced pressures and forces on a fixed submerged inclined plate

    Author: Nallayarasu, S. and Cheong, H.F. and Shankar, N.Jothi

    Journal: Finite Elements in Analysis and Design

    DOI/Link: 10.1016/0168-874X(94)90108-2

    Year: 1994