A numerical analysis of casing groove parameters on the performance of wave energy conversion device. (2018)

• Record Type: Journal Article
• Authors: Halder, Paresh; Varghese, Francis Amal; Husain, Afzal; Samad, Abdus
• Is Part Of: International journal of aerodynamics. Volume 6:Number 2/3/4(2018)
• Page Start: 125
• Page End: 136
• Publication Date: 2018
• Subjects: casing groove -- Wells turbine -- wave energy conversion -- CFD -- reaction turbine; Aerodynamics -- Periodicals; 533.6205
• Languages: English
• ISSNs: 1743-5447

Abstract

Casing grooves in Wells turbine can enhance its performance. The present computational work has been carried out to understand the effect of casing-groove's width-to-chord (w/C) ratio on the performance of a wave energy conversion device. In this study, four different values of w/C ratio such as 0.24, 0.48, 0.64 and 0.96 were investigated. The circumferential casing groove depth (3% of the chord length) and tip clearance (1% of the chord length) were kept constant for all the cases. The flow field was analysed through discretisation of three-dimensional steady incompressible Reynolds-averaged Navier-stokes (RANS) equations with two-equation eddy viscosity turbulence closer model. The simulation results show that the w/C ratio has a significant impact on the turbine performance and the w/C = 0.64 was found to be the optimal one among the several values investigated in the present study.