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1.
Qu, L., Norberg, C., Davidson, L., Peng, S.H. & Wang, F., Quantitative numerical anal- ysis of flow past a circular cylinder at reynolds number between 50 and 200. Journal of Fluids and Structures, 39, pp. 347–370, 2013. [Crossref]
2.
Bruneau, C.H. & Mortazavi, I., Control of vortex shedding around a pipe section using a porous sheath. International Journal of Offshore and Polar Engineering, 16(2), pp. 90–96, 2006.
3.
Abdi, I.A., Hooman, K. & Khashehchi, M., A comparison between the separated flow structures near the wake of a bare and a foam-covered circular cylinder. Journal of Flu- ids Engineering, 136(12), pp. 121–203, 2014.
4.
Bhattacharyya, S. & Singh, A., Reduction in drag and vortex shedding frequency through porous sheath around a circular cylinder. International Journal for Numerical Methods in Fluids, 65(6), pp. 683–698, 2011.
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Sobera, M., Kleijn, C. & Van den Akker, H., Subcritical flow past a circular cylinder surrounded by a porous layer. Physics of Fluids, 18(3), p. 038106, 2006. [Crossref]
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Bhattacharyya, S., Dhinakaran, S. & Khalili, A., Fluid motion around and through a porous cylinder. Chemical Engineering Science, 61(13), pp. 4451–4461, 2006. [Crossref]
7.
Rajani, B., Kandasamy, A. & Majumdar, S., Numerical simulation of laminar flow past a circular cylinder. Applied Mathematical Modelling, 33(3), pp. 1228–1247, 2009. [Crossref]
8.
Williamson, C., Oblique and parallel modes of vortex shedding in the wake of a circular cylinder at low reynolds numbers. Journal of Fluid Mechanics, 206, pp. 579–627, 1989. [Crossref]
9.
Fransson, J., Konieczny, P. & Alfredsson, P., Flow around a porous cylinder subject to continuous suction or blowing. Journal of Fluids and Structures, 19(8), pp. 1031–1048, 2004 [Crossref]
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Open Access
Research article

Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference

u. janoske
University of Wuppertal, Germany
International Journal of Computational Methods and Experimental Measurements
|
Volume 4, Issue 4, 2016
|
Pages 464-473
Received: N/A,
Revised: N/A,
Accepted: N/A,
Available online: N/A
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Abstract:

A numerical study on the laminar vortex shedding frequency on a porous and partially porous circular tube has been made. Porous tubes characterised by an inner and outer diameter of the porous zone are subjected to a uniform flow. The porous region is divided in eight segments of 45° with a different porous structure. The porous behaviour has been modelled by a Darcy-equation. To ensure a laminar vortex shedding, the Reynolds number has been chosen between 40 and 200. The influence of the Reynolds number and the properties of the porous zone (thickness, pressure drop), characterised by a dimensionless thickness L and a Darcy number Da on vortex shedding frequency (dimensionless Strouhal number Sr) and volume flow through the porous zone (dimensionless volume flow P) has been analysed.

Keywords: CFD, Cylinder, Frequency, Porous, Segment, Vortex shedding

1. Introduction

2. Numerical Method

3. Results and Discussions

4. Conclusions

References
1.
Qu, L., Norberg, C., Davidson, L., Peng, S.H. & Wang, F., Quantitative numerical anal- ysis of flow past a circular cylinder at reynolds number between 50 and 200. Journal of Fluids and Structures, 39, pp. 347–370, 2013. [Crossref]
2.
Bruneau, C.H. & Mortazavi, I., Control of vortex shedding around a pipe section using a porous sheath. International Journal of Offshore and Polar Engineering, 16(2), pp. 90–96, 2006.
3.
Abdi, I.A., Hooman, K. & Khashehchi, M., A comparison between the separated flow structures near the wake of a bare and a foam-covered circular cylinder. Journal of Flu- ids Engineering, 136(12), pp. 121–203, 2014.
4.
Bhattacharyya, S. & Singh, A., Reduction in drag and vortex shedding frequency through porous sheath around a circular cylinder. International Journal for Numerical Methods in Fluids, 65(6), pp. 683–698, 2011.
5.
Sobera, M., Kleijn, C. & Van den Akker, H., Subcritical flow past a circular cylinder surrounded by a porous layer. Physics of Fluids, 18(3), p. 038106, 2006. [Crossref]
6.
Bhattacharyya, S., Dhinakaran, S. & Khalili, A., Fluid motion around and through a porous cylinder. Chemical Engineering Science, 61(13), pp. 4451–4461, 2006. [Crossref]
7.
Rajani, B., Kandasamy, A. & Majumdar, S., Numerical simulation of laminar flow past a circular cylinder. Applied Mathematical Modelling, 33(3), pp. 1228–1247, 2009. [Crossref]
8.
Williamson, C., Oblique and parallel modes of vortex shedding in the wake of a circular cylinder at low reynolds numbers. Journal of Fluid Mechanics, 206, pp. 579–627, 1989. [Crossref]
9.
Fransson, J., Konieczny, P. & Alfredsson, P., Flow around a porous cylinder subject to continuous suction or blowing. Journal of Fluids and Structures, 19(8), pp. 1031–1048, 2004 [Crossref]
Cite this:
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Janoske, U. (2016). Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference. Int. J. Comput. Methods Exp. Meas., 4(4), 464-473. https://doi.org/10.2495/CMEM-V4-N4-464-473
U. Janoske, "Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference," Int. J. Comput. Methods Exp. Meas., vol. 4, no. 4, pp. 464-473, 2016. https://doi.org/10.2495/CMEM-V4-N4-464-473
@research-article{Janoske2016VortexSF,
title={Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference},
author={U. Janoske},
journal={International Journal of Computational Methods and Experimental Measurements},
year={2016},
page={464-473},
doi={https://doi.org/10.2495/CMEM-V4-N4-464-473}
}
U. Janoske, et al. "Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference." International Journal of Computational Methods and Experimental Measurements, v 4, pp 464-473. doi: https://doi.org/10.2495/CMEM-V4-N4-464-473
U. Janoske. "Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference." International Journal of Computational Methods and Experimental Measurements, 4, (2016): 464-473. doi: https://doi.org/10.2495/CMEM-V4-N4-464-473
Janoske U.. Vortex Shedding Frequency of Porous Circular Tubes with Varying Porous Properties Along the Circumference[J]. International Journal of Computational Methods and Experimental Measurements， 2016， 4(4)： 464-473. https://doi.org/10.2495/CMEM-V4-N4-464-473