Results 111 to 120 of about 2,810 (193)
, 2020 . Horizontal axis wind turbines suffer from aerodynamic inefficiencies in the blade root region (near the hub) due to several non-aerodynamic constraints. Aerodynamic interactions between turbines in a wind farm also lead to significant loss of wind farm
A Sharma, A Rosenberg, S Selvaraj
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General momentum theory for wind turbines at low tip speed ratios
, 2010 General momentum theory is used to study the behaviour of the ‘classical’ free vortex wake model of Joukowsky. This model has recently attained considerable attention as it shows the possibility of achieving a power performance that greatly exceeds the ...
van Kuik, Gijs A. M. +3 more
core +1 more source
A Proposal of "Lanchester-Betz Limit" based on a Historical Inspection on "Betz Limit".
Journal of Japan Wind Energy Association, 2002 Ushiyama, Izumi, Nemoto, Yasuyuki
openaire +1 more source
Ducted Horizontal Axis Marine Turbine Design for the race of Alderney [PDF]
, 2017 International audienceTo convert the kinetic energy of marine current into electricity, the most sensible generator is a horizontal axis turbine. The know-how and the tools used for marine propulsion devices find a new range of applications in this field.
Ait-Mohammed, M +2 more
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The power coefficient of windmills in ideal conditions
The windmill efficiency, also designated as the power coefficient, is defined as the ratio of the actual power output to the power present in the free stream of a fluid flowing through the same cross-sectional area. There are remarks in the literature to
D.P. Kothari, Shikha Singh, T.S. Bhatti
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Development of a system for testing grid-connected permanent magnet wind generators
, 2011 Renewable energy will be included in the South African Energy Mix over the next two decades. The introduction of renewable energy will reduce South Africa's carbon emissions and also stimulate the economy through job creation as well as creating a local ...
De la Bat, Jaques Gerard
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Fast track hip and knee arthroplasty: impact of different hospital care levels. [PDF]
Open Med (Wars)Betz M +7 more
europepmc +1 more source
, 1939 "The optimum circulation distribution and hence the maximum theoretical thrust obtainable for contra-vanes fitted behind propellers is markedly dependent on the number of guide vanes. The outer portion of the vanes, even if projecting considerably beyond
Betz, Albert
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Lock and Protect, Reducing Access to Adolescent Means of Suicide: A Pilot Feasibility Study. [PDF]
Acad Emerg MedBlanchard AM +10 more
europepmc +1 more source
The theory of contra-vanes applied to the propeller
, 1939 The optimum circulation distribution and hence the maximum theoretical thrust obtainable for contra-vanes fitted behind propellers is markedly dependent on the number of guide vanes.
Betz, Albert
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