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Vishwanath, Ashwani
- Studies on Nonlinear Behaviour of Floating Components for Offshore Desalination Plants
Abstract Views :242 |
PDF Views:78
Authors
Affiliations
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
Source
Current Science, Vol 118, No 11 (2020), Pagination: 1694-1701Abstract
The article discusses the design considerations for components which exhibit nonlinear phenomenon for an offshore floating platform housing energy and desalination plants. It gives an account of specific cases where such analyses were carried out. National Institute of Ocean Technology, MoES has been working in the area of developing large capacity offshore-based desalination plant. Various platform configurations were studied for housing the plant components. First case study deals with the numerical investigation of an inter-connection system between two floating platforms, semi-submersible and spar platform. Second case describes the methodologies for studying the effects of crucial vortex-induced vibration for estimating the fatigue life of the long-sea-conduit independently and when bundled.Keywords
Cold Water Pipe, Inter-Connection, Vortex-Induced Vibration.Full Text
References
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- Performance Evaluation of Power Module during Demonstration of Wave-Powered Navigational Buoy
Abstract Views :240 |
PDF Views:83
Authors
Biren Pattanaik
1,
Ashwani Vishwanath
1,
Purnima Jalihal
1,
Y. V. N. Rao
1,
A. Karthikeyan
1,
K. S. Sajeev
1,
V. P. Shipin
1
Affiliations
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
Source
Current Science, Vol 118, No 11 (2020), Pagination: 1712-1717Abstract
The article discusses performance of a power module in a wave-powered navigational buoy developed by National Institute of Ocean Technology. The power module of the buoy consists of an impulse turbine and a generator. Both unidirectional and bidirectional impulse turbine were tested for their performance. The article describes the selection, performance assessment tests and experimentation on these power modules carried out in the laboratory and in open sea trials. It was observed that unidirectional impulse turbine gave better performance than bidirectional impulse turbine for a given range of flow coefficient and pressure drop across the turbine. The performance of the wave powered navigational buoy in the open sea trials has given confidence on its use as a product and has also led to knowledge enhancement for scaling up floating wave energy devices.Keywords
Impulse Turbine, Open Sea Trial, Wave-Energy, Wave-Powered Navigational Buoy.Full Text
References
- Pattanaik, B., Nagasamy, D., Karthikeyan, A., Leo, D., Rao, Y. V. N., Sajeev, K. S., Dudhgaonkar, P. V. and Jalihal, P., Open sea trials on floating wave energy device backward bent ducted buoy and its performance optimization. In Proceedings of the Fourth International Conference in Ocean Engineering (ICOE2018), Lecture Notes in Civil Engineering, Springer, Singapore, 2019, vol. 23, pp. 775–791.
- Pattanaik, B., Rao, Y. V. N, Leo, D. and Jalihal, P., Experiential studies on development of power take off system for wave powered navigational buoy. In Proceedings of the 13th International Conference on Industrial and Information Systems (ICIIS 2018), IIT Ropar, 1–2 December 2018.
- George, A., Ranjith, B., Samad, A., Nagasamy, D. and Dudhgaonkar, P. V., Marine energy harvesting turbine: design based on analytical and numerical modelling. In Proceedings of the 12th European Wave and Tidal Energy Conference, Cork, Ireland, 27 August–1 September 2017.
- Liu, Z., Cui, Y., Li, M. and Shi, H., Steady state performance of an axial impulse turbine for oscillating water column wave energy converters. Energy, 2017, 141, 1–10.
- Setoguchi, T., Kaneko, K., Maeda, H., Kim, T. W. and Inoue, M., Impulse turbine with self-pitch-controlled guide vanes for wave power conversion: performance of mono-vane type. Int. J. Offshore Polar Eng., 1993, 3(1), 73–78.
- Paul, R. M. and Aswatha, N. P. A., Model studies of oscillating water column wave energy device. Ph D dissertation, Ocean Engineering Centre, Indian Institute of Technology Madras, February 1990.
- George, A., Anandanarayanan, R. and Suchithra, R., Experimental analysis of turbine-chamber coupling for wave energy conversion. Int. J. Energy Res., 2018, 42, 4770–4782.
- Vishwanath, A., Awasthi, N., Jalihal, P. and Dudhgaonkar, P., Performance simulation of wave-powered navigational buoy using CFD and experimental study. In Proceedings of the 4th International Conference in Ocean Engineering (ICOE2018), Lecture Notes in Civil Engineering, Springer, Singapore, 2019, vol. 23, pp. 869–882.