POD analysis of flow structures behind cylinders with concave fillets Article Swipe
Surface modifications of cylinders using fillets are investigated with respect to flow structures in a cross flow to a cylinder. Three cylinders are used: a plain cylinder, a cylinder with a helical fillet and a cylinder with a helical staggered pattern of small fillets in tangential direction. The flow field in the wake region is measured with Particle Image Velocimetry (PIV) in both a plane normal to the cylinder and a plane in the wake shear layer perpendicular to the free stream direction. Three different Reynolds numbers in the range from 0000 to 120000 are used. The helical fillet modifies the wake to be more narrow and longer and with less turbulent kinetic energy in the wake. The staggered fillet modifies the shear layers forming at the sides of the cylinder to contain three-dimensional structures. This reduces vortex shedding significantly resulting in even less turbulent kinetic in the ake. Proper Orthogonal Decomposition (POD) is shown to be an effective method for describing three-dimensional time varying flow structures using non-time-resolving planar measurements.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://pure.au.dk/portal/en/publications/94dc37b6-8f3d-4d9a-8a66-6e95839b0ff8
- OA Status
- green
- Cited By
- 2
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2980945165
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W2980945165Canonical identifier for this work in OpenAlex
- Title
-
POD analysis of flow structures behind cylinders with concave filletsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2018Year of publication
- Publication date
-
2018-01-01Full publication date if available
- Authors
-
Knud Erik Meyer, Celeste Burlina, Christos Τ. GeorgakisList of authors in order
- Landing page
-
https://pure.au.dk/portal/en/publications/94dc37b6-8f3d-4d9a-8a66-6e95839b0ff8Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://pure.au.dk/portal/en/publications/94dc37b6-8f3d-4d9a-8a66-6e95839b0ff8Direct OA link when available
- Concepts
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Flow (mathematics), Point of delivery, Geology, Mathematics, Mechanics, Geometry, Biology, Physics, AgronomyTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
2Total citation count in OpenAlex
- Citations by year (recent)
-
2024: 1, 2022: 1Per-year citation counts (last 5 years)
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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