Energy analysis of Francis turbine for various mass flow rate conditions based on entropy production theory

A Yu, Y Tang, Q Tang, J Cai, L Zhao, X Ge - Renewable Energy, 2022 - Elsevier
A methodology of the entropy production theory is employed in hydro turbine flows to
analyze the hydraulic loss characteristics quantitatively. The entropy production theory has …

Diagnosis of internal energy characteristics of mixed-flow pump within stall region based on entropy production analysis model

L Ji, W Li, W Shi, F Tian, R Agarwal - International Communications in Heat …, 2020 - Elsevier
In order to investigate the influence of tip clearance size on the characteristics of mixed-flow
pump under stall conditions, the entropy production analysis method is utilized to visualize …

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 …

Entropy generation and exergy destruction in condensing steam flow through turbine blade with surface roughness

H Ding, Y Li, E Lakzian, C Wen, C Wang - Energy Conversion and …, 2019 - Elsevier
In the steam turbine, the wetness loss due to vapor condensation is one of the most crucial
losses at low-pressure stage. This study focused on entropy generation and exergy …

Performance enhancement of a Wells turbine using CFD-optimization algorithms coupling

ATM Kotb, MAA Nawar, YA Attai, MH Mohamed - Energy, 2023 - Elsevier
Wells turbine is a popular device for converting wave energy. The current work aims to
maximize the power a Wells turbine generates using a response surface optimization …

[HTML][HTML] Performance improvement of a Wells turbine through an automated optimization technique

TK Das, E Kerikous, N Venkatesan, G Janiga… - Energy Conversion and …, 2022 - Elsevier
The present article reports optimization of the performance of a Wells turbine, which is an
axial turbine utilized for wave energy conversion, through a computational fluid dynamics …

Influence of stall fences on the performance of Wells turbine

TK Das, A Samad - Energy, 2020 - Elsevier
The Wells turbine is one of the candidates for use in Oscillating Water Column (OWC) type
wave energy conversion devices. The narrow operating range of a Wells turbine limits its …

Performance optimization of a modified Wells turbine for wave energy conversion

ATM Kotb, MAA Nawar, YA Attai, MH Mohamed - Ocean Engineering, 2023 - Elsevier
The Wells axial turbine is one of the most prevalent wave energy conversion turbines. The
current study addresses the optimization of the power produced by a Wells turbine utilizing a …

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 …

Entropy Generation Analysis in Turbulent Reacting Flows and Near Wall: A Review

A Sadiki, S Agrebi, F Ries - Entropy, 2022 - mdpi.com
This paper provides a review of different contributions dedicated thus far to entropy
generation analysis (EGA) in turbulent combustion systems. We account for various …