Experimental and numerical studies on an OWC axial-flow impulse turbine in reciprocating air flows

Z Liu, Y Cui, C Xu, L Sun, M Li, J Jin - Renewable and sustainable energy …, 2019 - Elsevier
In this study, an experimental facility and a transient numerical model are established to
predict the complicated unsteady behaviors of oscillating water column air turbines under …

Optimization of blade profiles for the Wells turbine

T Gratton, T Ghisu, G Parks, F Cambuli, P Puddu - Ocean engineering, 2018 - Elsevier
A Wells turbine, when coupled with an oscillating water column, allows the generation of
power from the energy in waves on the surface of the ocean. In the present work, a tabu …

Dynamic interaction between OWC system and Wells turbine: A comparison between CFD and lumped parameter model approaches

F Cambuli, T Ghisu, I Virdis, P Puddu - Ocean engineering, 2019 - Elsevier
Abstract Systems composed of an oscillating water column and a self-rectifying turbine are
among the most well-known devices for wave energy conversion. These systems have been …

A lumped parameter model to explain the cause of the hysteresis in OWC-Wells turbine systems for wave energy conversion

T Ghisu, F Cambuli, P Puddu, I Virdis, M Carta… - Applied Ocean …, 2020 - Elsevier
A Wells turbine is an axial-flow turbine consisting of a rotor usually with symmetric
(uncambered) blades staggered at a 90 degree angle relative to the machine's axis. This …

A comparison of different approaches to estimate the efficiency of Wells turbines

F Licheri, F Cambuli, P Puddu… - Journal of Fluids …, 2021 - asmedigitalcollection.asme.org
Wells turbines are among the most interesting power takeoff devices used in oscillating
water column (OWC) systems for the conversion of ocean-wave energy into electrical …

A critical examination of the hysteresis in Wells turbines using computational fluid dynamics and lumped parameter models

T Ghisu, F Cambuli, P Puddu… - Journal of …, 2020 - asmedigitalcollection.asme.org
The hysteretic behavior of oscillating water column (OWC)-installed Wells turbines has been
known for decades. The common explanation invokes the presence of unsteady …

Optimising Curriculum Quality Assessment in Application‐Oriented Universities: A Student‐Centric Approach Using Entropy and Cloud Model

Y Fu - European Journal of Education, 2024 - Wiley Online Library
Classroom instruction is the cornerstone of teaching methodologies, supported by
educational and pedagogical research. It is the primary way students acquire knowledge …

Discussion:“Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions”(Hu and Li, ASME J. Offshore Mech. Arct. Eng., 140 (1), p. 011901)

T Ghisu, F Cambuli, P Puddu… - Journal of …, 2019 - asmedigitalcollection.asme.org
The work by Hu and Li (2018,“Unsteady RANS Simulations of Wells Turbine Under
Transient Flow Conditions,” ASME J. Offshore Mech. Arct. Eng., 140 (1), p. 011901) presents …

A lumped parameter model for the analysis of dynamic effects in Wells turbines

I Virdis, T Ghisu, F Cambuli, P Puddu - Energy Procedia, 2018 - Elsevier
Breakwater integrated OWC/turbine systems are among the most well-known devices for
wave energy conversion, thanks to the low environmental impact and costs of realization …

Numerical study of a Wells turbine with variable pitch rotor blades

F Licheri, A Climan, P Puddu, F Cambuli, T Ghisu - Energy Procedia, 2018 - Elsevier
The Wells turbine is a self-rectifying axial turbine widely used in wave energy conversion
systems based on the Oscillating Water Column (OWC) principle. In these systems, the …