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

@inproceedings{Yakhot:2019:10.1007/978-3-030-22196-6_3,
author = {Yakhot, A and Feldman, Y and Moxey, D and Sherwin, S and Karniadakis, GE},
doi = {10.1007/978-3-030-22196-6_3},
pages = {15--20},
title = {Near-wall turbulence in a localized puff in a pipe},
url = {http://dx.doi.org/10.1007/978-3-030-22196-6_3},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - © Springer Nature Switzerland AG 2019. We have performed direct numerical simulations of a transitional flow in a pipe for Rem=2250 when turbulence manifests in the form of fleshes (puffs). From experiments and simulations, Rem ≈ 2250 has been estimated as a threshold when the average speeds of upstream and downstream fronts of a puff are identical (Song et al. in J Fluid Mech 813:283–304, 2017, [1]). The flow regime upstream of its trailing edge and downstream of its leading edge is almost laminar. To collect the velocity data, at each time instance, we followed a turbulent puff by a three-dimensional moving window centered at the location of the maximum energy of the transverse (turbulent) motion. In the near-wall region, despite the low Reynolds number, the turbulence statistics, in particular, the distribution of turbulence intensities and Reynolds shear stress becomes similar to a fully-developed turbulent pipe flow.
AU - Yakhot,A
AU - Feldman,Y
AU - Moxey,D
AU - Sherwin,S
AU - Karniadakis,GE
DO - 10.1007/978-3-030-22196-6_3
EP - 20
PY - 2019///
SN - 0930-8989
SP - 15
TI - Near-wall turbulence in a localized puff in a pipe
UR - http://dx.doi.org/10.1007/978-3-030-22196-6_3
ER -