Imperial College London

ProfessorSergeiChernyshenko

Faculty of EngineeringDepartment of Aeronautics

Chair in Aerodynamics
 
 
 
//

Contact

 

+44 (0)20 7594 5548s.chernyshenko Website

 
 
//

Location

 

211aCity and Guilds BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@inproceedings{Bondarenko:2005,
author = {Bondarenko, ME and Chernyshenko, SI},
title = {Master-modes of the 3D turbulent channel flow},
url = {https://www.imperial.ac.uk/aeronautics/fluiddynamics/ChernyshenkoResearch/index.php},
year = {2005}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - Using Chebychev-Fourier representation of Direct Numerical Simulation solution we determine the so-called master modes, that is those modes which contain all essential information about the flow. The method used by E. Olson and E.S. Titi for 2D case is applied for 3D turbulent channel flow (i.e. Determining modes for continuous data assimilation in 2D turbulence, Journal of Statistical Physics, 113 (2003), 799-840). Initial simulation performed with 32786 Chebychev-Fourier modes using a spatial domain with streamwise and spanwise periods of 1.6 π revealed that the number of master-modes for Reτ=85 is N≤650. Number of master-modes is not the same as, but may be related to, the fractal dimension of the attractor. For the comparison, L. Keefe, J. Kim and P. Moin estimated the fractal dimension as Dλ=780 for Reτ=80. (i.e. The dimension of attractors underlying periodic turbulent Poiseuille flow, J. Fluid Mech (1992), vol. 242, pp.1-29). Results for higher Reτ will be obtained, analysed and reported at the conference. In particular we are interested in what organised structures will appear in the master modes
AU - Bondarenko,ME
AU - Chernyshenko,SI
PY - 2005///
TI - Master-modes of the 3D turbulent channel flow
UR - https://www.imperial.ac.uk/aeronautics/fluiddynamics/ChernyshenkoResearch/index.php
UR - http://meetings.aps.org/link/BAPS.2005.DFD.EP.1
ER -