1982
DOI: 10.1115/1.3266280
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Darrieus Rotor Aerodynamics

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Cited by 21 publications
(7 citation statements)
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“…With this additional actuator disc, the forces on the blades as they pass the downwind are more accurately assessed due to a secondary velocity induction. These results were similar to investigations in Islam M. et al [17], Klimas P C [30], Brahimi M T. et al [31], Masson C. et al [32], Staelens Y. et al [33], Beri H. et al [34] and Wang K. et al [35]. Moreover, Hara et al [36] proposed the quadruple-multiple streamtube model, based on the blade element momentum theory, for simulating double blades VAWT performance.…”
Section: Introductionsupporting
confidence: 90%
“…With this additional actuator disc, the forces on the blades as they pass the downwind are more accurately assessed due to a secondary velocity induction. These results were similar to investigations in Islam M. et al [17], Klimas P C [30], Brahimi M T. et al [31], Masson C. et al [32], Staelens Y. et al [33], Beri H. et al [34] and Wang K. et al [35]. Moreover, Hara et al [36] proposed the quadruple-multiple streamtube model, based on the blade element momentum theory, for simulating double blades VAWT performance.…”
Section: Introductionsupporting
confidence: 90%
“…Indeed, a complex, intermeshed system of vorticity is revealed in which interactions between the reference blade and its own tip vortex trailed in a previous revolution of the turbine as well as an interaction between the reference blade and the tip vortex trailed by the other blade of the turbine are both present. Figure 15 certainly supports the conclusion reached by previous researchers in the field, such as Klimas2 amongst others, that the accurate modelling of the wake of such systems poses one of the greatest challenges that must be overcome before the correct portrayal of their aerodynamic performance will become a possibility.…”
Section: Wake Structurementioning
confidence: 99%
“…This is because at high tip speed ratios, the wake developed by each of the turbine blades convects downstream relatively slowly when compared to the rotational speed of the turbine, allowing each blade to encounter its own wake in the subsequent revolution. According to Klimas,2 the interaction between the blades and the wake of the turbine is considered to be one of the most critical problems in the numerical modelling of the aerodynamics of vertical‐axis wind turbines. Indeed, the interactions between the blades of the turbine and the vortices in its wake produce impulsive variations in the aerodynamic loading on the blades of the turbine, but these interactions are notoriously difficult to simulate accurately.…”
Section: Introductionmentioning
confidence: 99%
“…Vertical axis wind turbines (VAWT) are currently the subject of research due to some advantages they appear to have over the HAWT. For example, the Darrieus VAWT is a simple design with two or three fixed symmetrical blades, operates at lower tip speed ratios, and does not requiring any yaw control, while the geometry of the HAWT rotor blade is more complex with blades that twist and taper and often require a yaw mechanism (Klimas, 1982). Lower tip speed ratios mean that there is a potential for the VAWT to have lower noise than a HAWT.…”
Section: Introductionmentioning
confidence: 99%