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{Bao:2016:10.1016/j.jcp.2016.05.062,
author = {Bao, Y and Palacios, R and Graham, JMR and Sherwin, SJ},
doi = {10.1016/j.jcp.2016.05.062},
journal = {Journal of Computational Physics},
pages = {1079--1097},
title = {Generalized thick strip modelling for vortex-induced vibration of long flexible cylinders},
url = {http://dx.doi.org/10.1016/j.jcp.2016.05.062},
volume = {321},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - We propose a generalized strip modelling method that is computationally efficient for the VIV prediction of long flexible cylinders in three-dimensional incompressible flow. In order to overcome the shortcomings of conventional strip-theory-based 2D models, the fluid domain is divided into “thick” strips, which are sufficiently thick to locally resolve the small scale turbulence effects and three dimensionality of the flow around the cylinder. An attractive feature of the model is that we independently construct a three-dimensional scale resolving model for individual strips, which have local spanwise scale along the cylinder's axial direction and are only coupled through the structural model of the cylinder. Therefore, this approach is able to cover the full spectrum for fully resolved 3D modelling to 2D strip theory. The connection between these strips is achieved through the calculation of a tensioned beam equation, which is used to represent the dynamics of the flexible body. In the limit, however, a single “thick” strip would fill the full 3D domain. A parallel Fourier spectral/hp element method is employed to solve the 3D flow dynamics in the strip-domain, and then the VIV response prediction is achieved through the strip-structure interactions. Numerical tests on both laminar and turbulent flows as well as the comparison against the fully resolved DNS are presented to demonstrate the applicability of this approach.
AU - Bao,Y
AU - Palacios,R
AU - Graham,JMR
AU - Sherwin,SJ
DO - 10.1016/j.jcp.2016.05.062
EP - 1097
PY - 2016///
SN - 1090-2716
SP - 1079
TI - Generalized thick strip modelling for vortex-induced vibration of long flexible cylinders
T2 - Journal of Computational Physics
UR - http://dx.doi.org/10.1016/j.jcp.2016.05.062
UR - http://hdl.handle.net/10044/1/33432
VL - 321
ER -