A comparative study on effect of plain- and wavy-wall confinement on wake characteristics of flow past circular cylinder
| العنوان: | A comparative study on effect of plain- and wavy-wall confinement on wake characteristics of flow past circular cylinder |
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| المؤلفون: | R Deepakkumar, S. Jayavel, Shaligram Tiwari |
| المصدر: | Sādhanā. 42:963-980 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Physics, Multidisciplinary, Reynolds number, Laminar flow, 02 engineering and technology, Mechanics, Vorticity, 01 natural sciences, 010305 fluids & plasmas, Vortex, Physics::Fluid Dynamics, Flow separation, symbols.namesake, 020303 mechanical engineering & transports, Classical mechanics, 0203 mechanical engineering, Vortex stretching, 0103 physical sciences, symbols, Cylinder, Potential flow around a circular cylinder |
| الوصف: | A first attempt is made for identifying the wake characteristics of circular cylinder confined by a wavy wall at laminar flow regime. Numerical study of flow characteristics past circular cylinder with wavy-wall confinement perpendicular to cylinder axis has been carried out in the range of Reynolds number 20–100. The finite volume-based CFD solver Ansys Fluent (Version 15.0) is used for computations. The results are presented in the form of streamline plots, mean drag co-efficient, flow separation angle and recirculation length. Wavy-wall confinement leads to highly significant changes in the cylinder wake such as the evolution of strong x-plane vortices, enhanced fluid mixing, wake suppression near the crest region and vortex stretching near the trough region on the downstream of the cylinder has been observed. Flow separation angle varies significantly along the axis of the cylinder. Increased wall shear stress on rear surface of the cylinder has also been observed. The part of vorticity magnitude as compared to strain rate has been distinguished and identified using vortex identification methods such as Q-criterion and Lambda-2 criterion. |
| تدمد: | 0973-7677 0256-2499 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::63f1533e62d8a8ded2b248fd4c3c85f2 https://doi.org/10.1007/s12046-017-0649-1 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........63f1533e62d8a8ded2b248fd4c3c85f2 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 09737677 02562499 |
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