年間 4 号発行
ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336
IF:
0.6
Immediacy Index:
0.6
Eigenfactor:
0.00013
JCI:
0.14
SJR:
0.201
SNIP:
0.313
CiteScore™::
1.2
H-Index:
13
Indexed in
VISUALIZATION OF UNSTEADY FLOW PHENOMENA OF WELLS TURBINE DURING HYSTERESIS STUDY
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要約
To visualize the flow field around the blade of the Wells turbine during hysteresis, experimental and numerical investigations were made including deep stall condition of the Wells turbine. The experimental investigation was made using a turbine-equipment with a simulated sinusoidal flow condition. The numerical investigation was made by an unsteady three-dimensional Navier-Stokes numerical simulation. A counterclockwise hysteretic loop is observed in unstalled condition, which can be associated with a streamwise vortical flow appearing near the blade suction surface. Besides, a clockwise hysteretic loop is observed in deep stall condition, the flow structure of which can be considered similar to that of the dynamic stall of an airfoil.
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Ghisu Tiziano, Cambuli Francesco, Puddu Pierpaolo, Virdis Irene, Carta Mario, Licheri Fabio, A lumped parameter model to explain the cause of the hysteresis in OWC-Wells turbine systems for wave energy conversion, Applied Ocean Research, 94, 2020. Crossref
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Ghisu Tiziano, Cambuli Francesco, Puddu Pierpaolo, Virdis Irene, Carta Mario, Discussion: “Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions” (Hu and Li, ASME J. Offshore Mech. Arct. Eng., 140(1), p. 011901), Journal of Offshore Mechanics and Arctic Engineering, 141, 4, 2019. Crossref
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Ghisu Tiziano, Cambuli Francesco, Discussion on “Review of CFD studies on axial-flow self-rectifying turbines for OWC wave energy conversion” by Cui, Y., Liu, Z., Zhang, X. and Xu, C., Ocean Engineering, 197, 2020. Crossref