Development of statistical relationship for the potential assessment of hydrokinetic energy. (15th December 2022)

• Record Type: Journal Article
• Authors: Sood, Manoj; Singal, Sunil Kumar
• Is Part Of: Ocean engineering. Volume 266(2022) Part 3
• Publication Date: 2022-12-15
• Subjects: Hydrokinetic energy -- Potential assessment -- Hydrokinetic turbine -- Wake recovery distance -- Velocity duration curve; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2022.112140
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: Instream technology is attaining great focus with enhancement in research from model to prototype testing for the extraction of hydropower energy. The major constraint of instream technology is the potential assessment of hydrokinetic energy. Therefore, the main aim of the study is to develop a model for the potential assessment of hydrokinetic energy available in the vast channel network. Three-dimensional transient numerical simulations have been carried out by incorporating two phase modelling to consider free surface effect. Numerical simulations have been carried out on actual dimensions of rotor and channel to analyse the impact of hydrokinetic rotor's operation on the hydraulic behaviour of channel under different flow velocities. It is noticed that the impact of turbine operation is limited to a certain flow volume. The determination of the impacted distance led to the development of three statistical relationships which provides minimum bed width required for operation, minimum depth essential for submergence and wake recovery distance. The developed statistical relationships defining the longitudinal and lateral spacing between two units are the functions of flow velocity and turbine diameter. Further, the developed statistical relationships is applied on an irrigation channel and assessed that 54122920 kWh/km energy can be generated per year. Highlights: First developed statistical relationship for the potential assessment of hydrokinetic energy. The developed statistical relationship defines spacing between two units placed laterally and longitudinally in the channel. Incorporation of free surface effect by two phase modelling to represent flow in open channel. Application of the developed statistical relationship assessed 54122920 kWh/km energy generation per year from a channel.