Imperial College London

ProfessorSpencerSherwin

Faculty of EngineeringDepartment of Aeronautics

Professor of Computational Fluid Mechanics
 
 
 
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Contact

 

+44 (0)20 7594 5052s.sherwin Website

 
 
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Location

 

313BCity and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bruno:2008,
author = {Bruno, S Carmo and Spencer, J Sherwin and Peter, W Bearman and Richard, HJ Willden},
journal = {Journal of Fluid Mechanics},
pages = {1--29},
title = {Wake Transition in the flow around two circular cylinders in staggered arrangements},
url = {http://www2.imperial.ac.uk/ssherw/spectralhp/papers/JFM-CaShBeWi-07.pdf},
volume = {597},
year = {2008}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The wake transition of the flow around two circular cylinders placed in staggered arrangements with fixed streamwise separation of 5D and cross stream separation varying from 0D to 3D has been studied. The wake transition is compared to that of a single isolated cylinder. Linear stability analysis utilising Floquet theory and direct numerical simulations using a spectral/hp element spatial discretisation were carried out. The unstable modes that first appear in the wake transition of the flow around a single cylinder, which are the long spanwise wavelength mode A and the short spanwise wavelength mode B, are also found in the flow around the staggered arrangements. However, a third mode, referred to as mode C, is also present in the wake transition of the flow around staggered arrangements, depending on the relative positioning of the cylinders. This mode has an intermediate spanwise wavelength and period-doubling character. The structure and onset characteristics of mode C are analysed and the non-linear character of the bifurcation for this mode is investigated.
AU - Bruno,S Carmo
AU - Spencer,J Sherwin
AU - Peter,W Bearman
AU - Richard,HJ Willden
EP - 29
PY - 2008///
SP - 1
TI - Wake Transition in the flow around two circular cylinders in staggered arrangements
T2 - Journal of Fluid Mechanics
UR - http://www2.imperial.ac.uk/ssherw/spectralhp/papers/JFM-CaShBeWi-07.pdf
UR - http://hdl.handle.net/10044/1/828
VL - 597
ER -