BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Canada/Pacific BEGIN:DAYLIGHT DTSTART:20180311T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20181104T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20180613T202226Z UID:128F1521-6F94-419B-ABF6-EA9BD7AD65E5 DTSTART;TZID=Canada/Pacific:20180613T110000 DTEND;TZID=Canada/Pacific:20180613T120000 DESCRIPTION:Title: Dynamic Modeling of Vortex Induced Vibration Wind Turbin es\n\nAbstract: Bladeless Wind Turbines (BWT) present a new idea in energy generation. These bladeless turbines work to achieve essentially the same thing as traditional turbines: To turn the wind into kinetic energy that can be harvested to generate electricity. However\, instead of a propeller \, these structures use a pattern of vortices (spinning wind) in order to capture the breeze. In this presentation we talk about dynamic modeling of four configurations of vortex-induced vibrations of bladeless wind turbin es. The BWTs consist of a bluff body mounted on a flexible structure in th e flow field. The shape of the bluff body and its mounting structure are d ifferent among the proposed BWTs. The Euler-Bernoulli beam theory and the Galerkin procedure are used to derive a nonlinear distributed-parameter mo del for the BWTs under a fluctuating lift force due to periodically sheddi ng vortices. The derived dynamic model is validated through comparison wit h a 3D CFD-FEM numerical simulation. The effects of the wind speed on the induced lift force\, turbine deflection\, and generated power of four BWTs are investigated. It is verified that the amplitude of the vibrations of the BWT increases significantly when the vortex shedding is synchronized w ith the structural oscillations. The results show that\, while conic BWTs have a higher performance at post-synchronization region (i.e. high wind s peeds)\, the circular cylinder BWTs exhibit a better performance at pre-sy nchronization region (i.e. low wind speeds).\n\nSpeaker(s): Professor Moha mmad Eghtesad\, \n\nRoom: 418\, Bldg: MacLeod\, The University of British Columbia\, 2356 Main Mall\, Vancouver\, British Columbia\, Canada\, V6T1Z4 LOCATION:Room: 418\, Bldg: MacLeod\, The University of British Columbia\, 2 356 Main Mall\, Vancouver\, British Columbia\, Canada\, V6T1Z4 ORGANIZER:nagamune@mech.ubc.ca SEQUENCE:2 SUMMARY:IEEE Joint CS/RA/SMC Chapter Technical Meeting "Dynamic Modeling of Vortex Induced Vibration Wind Turbines" URL;VALUE=URI:https://events.vtools.ieee.org/m/172618 X-ALT-DESC:Description: <br /><p>Title: Dynamic Modeling of Vortex Induced Vibration Wind Turbines</p>\n<p>Abstract: Bladeless Wind Turbines (BWT) pr esent a new idea in energy generation. These bladeless turbines work to ac hieve essentially the same thing as traditional turbines: To turn the wind into kinetic energy that can be harvested to generate electricity. Howeve r\, instead of a propeller\, these structures use a pattern of vortices (s pinning wind) in order to capture the breeze. In this presentation we talk about dynamic modeling of four configurations of vortex-induced vibration s of bladeless wind turbines. The BWTs consist of a bluff body mounted on a flexible structure in the flow field. The shape of the bluff body and it s mounting structure are different among the proposed BWTs. The Euler-Bern oulli beam theory and the Galerkin procedure are used to derive a nonlinea r distributed-parameter model for the BWTs under a fluctuating lift force due to periodically shedding vortices. The derived dynamic model is valida ted through comparison with a 3D CFD-FEM numerical simulation. The effects of the wind speed on the induced lift force\, turbine deflection\, and ge nerated power of four BWTs are investigated. It is verified that the ampli tude of the vibrations of the BWT increases significantly when the vortex shedding is synchronized with the structural oscillations. The results sho w that\, while conic BWTs have a higher performance at post-synchronizatio n region (i.e. high wind speeds)\, the circular cylinder BWTs exhibit a be tter performance at pre-synchronization region (i.e. low wind speeds).</p> END:VEVENT END:VCALENDAR