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Hydrodynamic impact of a tidal barrage in the Severn Estuary, UK

Xia, Junqiang; Falconer, Roger A.; Lin, Binliang - In: Renewable Energy 35 (2010) 7, pp. 1455-1468

The Severn Estuary has a spring tidal range approaching 14m, which is among the highest tides in the world. Various proposals have been made regarding the construction of a tidal barrage across the estuary to enable tidal energy to be generated. The aim of the current study is to investigate the...

Persistent link: https://www.econbiz.de/10010806514

A MCRT and FVM coupled simulation method for energy conversion process in parabolic trough solar collector

He, Ya-Ling; Xiao, Jie; Cheng, Ze-Dong; Tao, Yu-Bing - In: Renewable Energy 36 (2011) 3, pp. 976-985

A coupled simulation method based on Monte Carlo Ray Trace (MCRT) and Finite Volume Method (FVM) is established to solve the complex coupled heat transfer problem of radiation, heat conduction and convection in parabolic trough solar collector system. A coupled grid checking method is...

Persistent link: https://www.econbiz.de/10011045651

Finite-volume modelling of heat and mass transfer during convective drying of porous bodies – Non-conjugate and conjugate formulations involving the aerodynamic effects

Lamnatou, Chr.; Papanicolaou, E.; Belessiotis, V.; … - In: Renewable Energy 35 (2010) 7, pp. 1391-1402

In this study, a numerical procedure is outlined and representative results for heat and mass transfer during convective drying of porous bodies are presented. The Luikov model was implemented and applied both on individual samples of construction materials and agricultural products, as well as...

Persistent link: https://www.econbiz.de/10011045764

Three-dimensional analysis and investigation of the thermal and hydrodynamic behaviors of cylindrical storage tanks

Savicki, Darci L.; Vielmo, Horácio A.; Krenzinger, Arno - In: Renewable Energy 36 (2011) 5, pp. 1364-1373

A numerical analysis of the three-dimensional temperature and velocity fields in horizontal cylindrical storage tanks was performed. The phenomena of laminar natural convection and vertical stratification of temperature were considered. The developed three-dimensional transient computing code...

Persistent link: https://www.econbiz.de/10011046352

Numerical characterization of a preliminary portable micro-hydrokinetic turbine rotor design

Schleicher, W.C.; Riglin, J.D.; Oztekin, A. - In: Renewable Energy 76 (2015) C, pp. 234-241

) simulations. The two equation k–ω shear-stress transport (SST) turbulence model is employed to predict quasi steady flow …

Persistent link: https://www.econbiz.de/10011189949

Rooftop wind monitoring campaigns for small wind turbine applications: Effect of sampling rate and averaging period

Tabrizi, Amir Bashirzadeh; Whale, Jonathan; Lyons, Thomas; … - In: Renewable Energy 77 (2015) C, pp. 320-330

Small wind turbines are often sited in more complex environments than the open terrain sites assumed in relevant installation guidelines or in the international small wind turbine design standard IEC61400-2. The built environment is an example of such a complex environment and installation of...

Persistent link: https://www.econbiz.de/10011189964

Characterization of turbulence anisotropy, coherence, and intermittency at a prospective tidal energy site: Observational data analysis

McCaffrey, Katherine; Fox-Kemper, Baylor; Hamlington, … - In: Renewable Energy 76 (2015) C, pp. 441-453

characterization of the turbulent flow encountered by a turbine in a tidal strait. Metrics such as turbulence intensity, structure … functions, probability density functions, intermittency, coherent turbulence kinetic energy, anisotropy invariants, and a new … scalar measure of anisotropy are used to characterize the turbulence. The results indicate that the scalar anisotropy …

Persistent link: https://www.econbiz.de/10011189993

Augmented LQG controller for enhancement of online dynamic performance for WTG system

Muhando, Endusa Billy; Senjyu, Tomonobu; Kinjo, Hiroshi; … - In: Renewable Energy 33 (2008) 8, pp. 1942-1952

Operation of variable speed wind turbine generator (WTG) in the above-rated region characterized by high turbulence …

Persistent link: https://www.econbiz.de/10010804770

Numerical and experimental study of using axial pump as turbine in Pico hydropower plants

Bozorgi, A.; Javidpour, E.; Riasi, A.; Nourbakhsh, A. - In: Renewable Energy 53 (2013) C, pp. 258-264

Spalart-Allmaras turbulence model were solved using NUMECA software, and characteristic curves were obtained. To validate …

Persistent link: https://www.econbiz.de/10010804886

Methodology for tidal turbine representation in ocean circulation model

Roc, Thomas; Conley, Daniel C.; Greaves, Deborah - In: Renewable Energy 51 (2013) C, pp. 448-464

tidal current turbine (TCT) array layout optimization. By adapting both momentum and turbulence transport equations of an …

Persistent link: https://www.econbiz.de/10010805131