Modelling Two-Dimensional Flow Around a Circular Cylinder with Different Roughness Height

DOI

10.2991/icache-16.2016.45How to use a DOI?

Keywords

Roughness height, Vortex shedding, Drag coefficient, Lift coefficient, Pressure coefficient

Abstract

The present paper focuses on the analysis of the flow around a circular cylinder on the surface with different roughness height (Ks). In this simulation, an iced transmission line was simplified to a two-dimensional cylinder with roughness wall on the part of iced area and smooth wall on the remaining, the Reynolds number(Re) is about 200, and the turbulence was modeled using the SST k- model. The variation tendency of lift coefficient (Cl) and drag coefficient (Cd) were obtained as well as the mean pressure coefficient (Cp) of the cylinder. The computational results indicated that pressure distribution on the cylindrical surface is asymmetry because of different roughness condition in iced and un-iced area and the separation point of vortex moves backward with the increase of the roughness height.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianbo Xie
AU  - Xin Wang
PY  - 2016/11
DA  - 2016/11
TI  - Modelling Two-Dimensional Flow Around a Circular Cylinder with Different Roughness Height
BT  - Proceedings of the 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)
PB  - Atlantis Press
SP  - 228
EP  - 233
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-16.2016.45
DO  - 10.2991/icache-16.2016.45
ID  - Xie2016/11
ER  -