Dynamic analysis of Darrieus vertical axis wind turbine rotors
The dynamic response characteristics of the VAWT rotor are important factors governing the safety and fatigue life of VAWT systems. The principal problems are the determination of critical rotor speeds (resonances) and the assessment of forced vibration response amplitudes. The solution to these problems is complicated by centrifugal and coriolis effects which can have substantial influence on rotor resonant frequencies and mode shapes. This paper will describe and discuss the primary tools now in use at Sandia National Laboratories for rotor analysis. These tools include a lumped springmass model (VAWTDYN) and also finite-element based approaches. The discussion will center on the accuracy and completeness of current capabilities and plans for future research.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6618917
- Report Number(s):
- SAND-80-2820C; CONF-810226-2
- Resource Relation:
- Conference: 2. DOE/NASA wind turbine dynamics workshop, Cleveland, OH, USA, 24 Feb 1981
- Country of Publication:
- United States
- Language:
- English
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