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- Vortex_shedding abstract "In fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size and shape of the body. In this flow, vortices are created at the back of the body and detach periodically from either side of the body. See Von Kármán vortex street. The fluid flow past the object creates alternating low-pressure vortices on the downstream side of the object. The object will tend to move toward the low-pressure zone.If the bluff structure is not mounted rigidly and the frequency of vortex shedding matches the resonance frequency of the structure, the structure can begin to resonate, vibrating with harmonic oscillations driven by the energy of the flow. This vibration is the cause of the "singing" of overhead power line wires in a wind, and the fluttering of automobile whip radio antennas at some speeds. Tall chimneys constructed of thin-walled steel tube can be sufficiently flexible that, in air flow with a speed in the critical range, vortex shedding can drive the chimney into violent oscillations that can damage or destroy the chimney. These chimneys can be protected from this phenomenon by installing a series of fences (sometimes called strakes or spoilers) at the top and running down the exterior of the chimney for approximately 20% of its length. The fences are usually located in a helical pattern. The fences prevent strong vortex shedding with low separation frequencies. The optimal pitch for vortex shedding is a 5D pitch (5 x the diameter of the stack).Vortex shedding was one of the causes proposed for the failure of the original Tacoma Narrows Bridge (Galloping Gertie) in 1940, but was rejected because the frequency of the vortex shedding did not match that of the bridge. The bridge actually failed by aeroelastic flutter.A thrill ride, "VertiGo" at Cedar Point in Sandusky, Ohio suffered vortex shedding during the winter of 2001, causing one of the three towers to collapse. The ride was closed for the winter at the time.".
- Vortex_shedding thumbnail Vortex-street-animation.gif?width=300.
- Vortex_shedding wikiPageExternalLink Tacoma_Narrows.
- Vortex_shedding wikiPageExternalLink sf1.html.
- Vortex_shedding wikiPageExternalLink watch?v=_AJgEa2dbJU.
- Vortex_shedding wikiPageID "1609956".
- Vortex_shedding wikiPageLength "4857".
- Vortex_shedding wikiPageOutDegree "28".
- Vortex_shedding wikiPageRevisionID "641180204".
- Vortex_shedding wikiPageWikiLink Aeolian_vibration.
- Vortex_shedding wikiPageWikiLink Aeroelasticity.
- Vortex_shedding wikiPageWikiLink Category:Fluid_dynamics.
- Vortex_shedding wikiPageWikiLink Category:Vortices.
- Vortex_shedding wikiPageWikiLink Cedar_Point.
- Vortex_shedding wikiPageWikiLink Chimney.
- Vortex_shedding wikiPageWikiLink Chimneys.
- Vortex_shedding wikiPageWikiLink File:Vortex-street-animation.gif.
- Vortex_shedding wikiPageWikiLink Fluid_dynamics.
- Vortex_shedding wikiPageWikiLink Harmonic_oscillator.
- Vortex_shedding wikiPageWikiLink Kármán_vortex_street.
- Vortex_shedding wikiPageWikiLink Overhead_power_line.
- Vortex_shedding wikiPageWikiLink Resonance.
- Vortex_shedding wikiPageWikiLink Resonate.
- Vortex_shedding wikiPageWikiLink Reynolds_number.
- Vortex_shedding wikiPageWikiLink Sandusky,_Ohio.
- Vortex_shedding wikiPageWikiLink Stockbridge_damper.
- Vortex_shedding wikiPageWikiLink Strake_(aeronautics).
- Vortex_shedding wikiPageWikiLink Strake_(aviation).
- Vortex_shedding wikiPageWikiLink Strouhal_number.
- Vortex_shedding wikiPageWikiLink Tacoma_Narrows_Bridge_(1940).
- Vortex_shedding wikiPageWikiLink VertiGo_(ride).
- Vortex_shedding wikiPageWikiLink Von_Kármán_vortex_street.
- Vortex_shedding wikiPageWikiLink Vortex.
- Vortex_shedding wikiPageWikiLink Vortex-induced_vibration.
- Vortex_shedding wikiPageWikiLink Whip_antenna.
- Vortex_shedding wikiPageWikiLinkText "Vortex shedding".
- Vortex_shedding wikiPageWikiLinkText "Vortex shedding#Mitigation of vortex shedding effects".
- Vortex_shedding wikiPageWikiLinkText "shed".
- Vortex_shedding wikiPageWikiLinkText "shedding of vortices".
- Vortex_shedding wikiPageWikiLinkText "shedding".
- Vortex_shedding wikiPageWikiLinkText "vortex shedding".
- Vortex_shedding hasPhotoCollection Vortex_shedding.
- Vortex_shedding wikiPageUsesTemplate Template:Reflist.
- Vortex_shedding subject Category:Fluid_dynamics.
- Vortex_shedding subject Category:Vortices.
- Vortex_shedding hypernym Flow.
- Vortex_shedding type Mountain.
- Vortex_shedding type Dynamic.
- Vortex_shedding type Mechanic.
- Vortex_shedding comment "In fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size and shape of the body. In this flow, vortices are created at the back of the body and detach periodically from either side of the body. See Von Kármán vortex street. The fluid flow past the object creates alternating low-pressure vortices on the downstream side of the object.".
- Vortex_shedding label "Vortex shedding".
- Vortex_shedding sameAs 1_(هـ_ش).
- Vortex_shedding sameAs ۱.
- Vortex_shedding sameAs m.05gft2.
- Vortex_shedding sameAs Q6389895.
- Vortex_shedding sameAs Q6389895.
- Vortex_shedding wasDerivedFrom Vortex_shedding?oldid=641180204.
- Vortex_shedding depiction Vortex-street-animation.gif.
- Vortex_shedding isPrimaryTopicOf Vortex_shedding.