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Gowtham Radhakrishnan
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Journal Articles

Simultaneous Measurements From Buoys and Vessel-Mounted X-Band Radar to Study Currents and Waves at Breisundet Field

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Konstantinos Christakos, Johann A. Dirdal
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. December 2025, 147(6): 061202.
Paper No: OMAE-24-1143
https://doi.org/10.1115/1.4068308
Published Online: April 25, 2025
View Articletitled, Simultaneous Measurements From Buoys and Vessel-Mounted X-Band Radar to Study Currents and Waves at Breisundet Field
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Topics: Buoys, Radar, Spectra (Spectroscopy), Vessels, Waves, Currents
Journal Articles

Analyzing the Sensitivity of Wave Frequency Responses of Floating Vessels to Uncertain System Variables Utilizing Polynomial Chaos Expansion

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Xu Han
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. June 2024, 146(3): 031702.
Paper No: OMAE-23-1063
https://doi.org/10.1115/1.4063619
Published Online: December 11, 2023
View Articletitled, Analyzing the Sensitivity of Wave Frequency Responses of Floating Vessels to Uncertain System Variables Utilizing Polynomial Chaos Expansion
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Topics: Chaos, Polynomials, Vessels, Sensitivity analysis, Waves, Uncertainty
Proceedings Papers

A Methodology for Tuning of Computational Vessel Models Utilizing Wave Measurements From X-Band Marine Radar and Wave Buoy

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Karl E. Kaasen, Konstantinos Christakos, Johann A. Dirdal
Proc. ASME. OMAE2023, Volume 2: Structures, Safety, and Reliability, V002T02A010, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104492
https://doi.org/10.1115/OMAE2023-104492
View Paper titled, A Methodology for Tuning of Computational Vessel Models Utilizing Wave Measurements From X-Band Marine Radar and Wave Buoy
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Topics: Buoys, Entropy, Radar, Vessels, Waves
Proceedings Papers

Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Konstantinos Christakos
Proc. ASME. OMAE2023, Volume 5: Ocean Engineering, V005T06A060, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104877
https://doi.org/10.1115/OMAE2023-104877
View Paper titled, Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis
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Topics: Buoys, Ocean waves, Radar, Spectra (Spectroscopy), Waves, Transfer functions, Vessels, Computer simulation, Decision making, Dispersion (Optics)
Proceedings Papers

On the Relationship Between Spectral Models of Ice Drift and Wind Turbulence

Chana Sinsabvarodom, Bernt J. Leira, Knut V. Høyland, Wei Chai, Arvid Naess, Gowtham Radhakrishnan
Proc. ASME. OMAE2023, Volume 6: Polar and Arctic Sciences and Technology, V006T07A001, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104751
https://doi.org/10.1115/OMAE2023-104751
View Paper titled, On the Relationship Between Spectral Models of Ice Drift and Wind Turbulence
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Topics: Ice, Turbulence, Wind
Proceedings Papers

On Design Parameters for Accidental Ice Loading on Ship Hulls

Bernt J. Leira, Wei Chai, Gowtham Radhakrishnan
Proc. ASME. OMAE2022, Volume 6: Polar and Arctic Sciences and Technology, V006T07A031, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-81304
https://doi.org/10.1115/OMAE2022-81304
View Paper titled, On Design Parameters for Accidental Ice Loading on Ship Hulls
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Topics: Design, Hull, Ice, Ships
Proceedings Papers

Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements

Gowtham Radhakrishnan, Bernt J. Leira, Zhen Gao, Svein Sævik, Alojz Gomola
Proc. ASME. OMAE2022, Volume 2: Structures, Safety, and Reliability, V002T02A018, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-78912
https://doi.org/10.1115/OMAE2022-78912
View Paper titled, Motion Response Prediction of Marine Vessels Based on Hydrodynamic Models Updated Through On-Site Measurements
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Topics: Spectra (Spectroscopy), Vessels, Waves, Optimization, Uncertainty, Errors, North Sea, Ocean engineering, Physics
Proceedings Papers

A Framework for Condition Monitoring and Risk-Based Decision Support Involving a Vessel State Observer

Xu Han, Bernt J. Leira, Svein Sævik, Gowtham Radhakrishnan, Stian Skjong, Lars T. Kyllingstad
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A018, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-61850
https://doi.org/10.1115/OMAE2021-61850
View Paper titled, A Framework for Condition Monitoring and Risk-Based Decision Support Involving a Vessel State Observer
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Topics: Condition monitoring, Risk, State estimation, Vessels, Sensors, Data acquisition, Inertia (Mechanics), Waves, Center of mass, Damping
Proceedings Papers

System Uncertainty Effects on the Wave Frequency Response Of Floating Vessels Based on Polynomial Chaos Expansion

Gowtham Radhakrishnan, Xu Han, Svein Sævik, Zhen Gao, Bernt Johan Leira
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A016, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62542
https://doi.org/10.1115/OMAE2021-62542
View Paper titled, System Uncertainty Effects on the Wave Frequency Response Of Floating Vessels Based on Polynomial Chaos Expansion
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Topics: Chaos, Frequency-domain analysis, Polynomials, Sensitivity analysis, Uncertainty, Vessels, Wave frequency