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Study the Flow behi...
Study the Flow behind a Semi-Circular Step Cylinder (Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics (CFD))
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- Bin Asad, S M Sayeed, 1985- (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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- Lundström, Staffan (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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- Andersson, Anders (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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(creator_code:org_t)
- 2017-03-09
- 2017
- Engelska.
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Ingår i: Energies. - Basel, Switzerland : MDPI. - 1996-1073. ; 10:3
- Relaterad länk:
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https://doi.org/10.3...
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visa fler...
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https://ltu.diva-por... (primary) (Raw object)
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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visa färre...
Abstract
Ämnesord
Stäng
- Laser Doppler Velocimetry (LDV) measurements, flow visualizations and unsteadyReynolds-Averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations havebeen carried out to study the turbulent wake that is formed behind a semi-circular step cylinder ata constant flow rate. The semi-circular cylinder has two diameters, a so-called step cylinder. Theresults from the LDV measurements indicate that wake length and vortex shedding frequency varieswith the cylinder diameter. This implies that a step cylinder can be used to attract fish of differentsize. By visualizations of the formation of a recirculation region and the well-known von Kármánvortex street behind the cylinder are disclosed. The simulation results predict the wake length andshedding frequency well for the flow behind the large cylinder but fail to capture the dynamics ofthe flow near the step in diameter to some extent and the flow behind the small cylinder to a largerextent when compared with measurements.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- laser doppler velocimetry (LDV)
- computational fluid dynamics (CFD)
- fish migration
- step cylinder
- shedding
- vortex street
- Strömningslära
- Fluid Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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