Investigation of the energy carrying outer layer structures in adverse pressure gradient flows

Taygun Recep Gungor; Ayse Gul Gungor; Yvan Maciel; Mark Phil Simens

Investigation of the energy carrying outer layer structures in adverse pressure gradient flows

Taygun Recep Gungor
, Ayse Gul Gungor
, Yvan Maciel
, Mark Phil Simens

Uzay Mühendisliği Bölümü

Araştırma sonucu: Konferansa katkı › Yazı › bilirkişi

Özet

Spatio-temporal energy spectra are analyzed from a direct numerical simulation of a non-equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) spanning Re_θ =1500-8200 and shape factor H = 1.4 − 3. The temporal data at two streamwise positions corresponding to small (H = 1.6) and large (H = 2.5) velocity defects are used to obtain the spatio-temporal spectra. The increase in the mean velocity defect has several effects on the energy carrying outer layer structures. The turbulent activity in the inner layer is attenuated. The energy moves away from the wall to the outer layer. The streamwise and spanwise wavelengths of the energy carrying outer layer structures decrease with increasing velocity defect.

Orijinal dil	İngilizce
Yayın durumu	Yayınlandı - 2019
Etkinlik	11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019 - Southampton, United Kingdom Süre: 30 Tem 2019 → 2 Ağu 2019

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???event.eventtypes.event.conference???	11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019
Ülke/Bölge	United Kingdom
Şehir	Southampton
Periyot	30/07/19 → 2/08/19

Bibliyografik not

Publisher Copyright:
© 2019 International Symposium on Turbulence and Shear Flow Phenomena, TSFP. All rights reserved.

Finansman

A.G.G. and T.R.G were supported by Research Fund of the Istanbul Technical University with the project number of MGA-2017-40731. T.R.G and Y.M are supported by NSERC of Canada. Computations of the present data was made possible by a generous grant of computer time from Compute Canada.

Finansörler	Finansör numarası
NSERC of Canada
Compute Canada
Natural Sciences and Engineering Research Council of Canada
Istanbul Teknik Üniversitesi	MGA-2017-40731

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Alıntı Yap

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title = "Investigation of the energy carrying outer layer structures in adverse pressure gradient flows",

abstract = "Spatio-temporal energy spectra are analyzed from a direct numerical simulation of a non-equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) spanning Reθ =1500-8200 and shape factor H = 1.4 − 3. The temporal data at two streamwise positions corresponding to small (H = 1.6) and large (H = 2.5) velocity defects are used to obtain the spatio-temporal spectra. The increase in the mean velocity defect has several effects on the energy carrying outer layer structures. The turbulent activity in the inner layer is attenuated. The energy moves away from the wall to the outer layer. The streamwise and spanwise wavelengths of the energy carrying outer layer structures decrease with increasing velocity defect.",

author = "Gungor, \{Taygun Recep\} and Gungor, \{Ayse Gul\} and Yvan Maciel and Simens, \{Mark Phil\}",

note = "Publisher Copyright: {\textcopyright} 2019 International Symposium on Turbulence and Shear Flow Phenomena, TSFP. All rights reserved.; 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019 ; Conference date: 30-07-2019 Through 02-08-2019",

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TY - CONF

T1 - Investigation of the energy carrying outer layer structures in adverse pressure gradient flows

AU - Gungor, Taygun Recep

AU - Gungor, Ayse Gul

AU - Maciel, Yvan

AU - Simens, Mark Phil

PY - 2019

Y1 - 2019

N2 - Spatio-temporal energy spectra are analyzed from a direct numerical simulation of a non-equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) spanning Reθ =1500-8200 and shape factor H = 1.4 − 3. The temporal data at two streamwise positions corresponding to small (H = 1.6) and large (H = 2.5) velocity defects are used to obtain the spatio-temporal spectra. The increase in the mean velocity defect has several effects on the energy carrying outer layer structures. The turbulent activity in the inner layer is attenuated. The energy moves away from the wall to the outer layer. The streamwise and spanwise wavelengths of the energy carrying outer layer structures decrease with increasing velocity defect.

AB - Spatio-temporal energy spectra are analyzed from a direct numerical simulation of a non-equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) spanning Reθ =1500-8200 and shape factor H = 1.4 − 3. The temporal data at two streamwise positions corresponding to small (H = 1.6) and large (H = 2.5) velocity defects are used to obtain the spatio-temporal spectra. The increase in the mean velocity defect has several effects on the energy carrying outer layer structures. The turbulent activity in the inner layer is attenuated. The energy moves away from the wall to the outer layer. The streamwise and spanwise wavelengths of the energy carrying outer layer structures decrease with increasing velocity defect.

UR - https://www.scopus.com/pages/publications/85084022236

M3 - Paper

AN - SCOPUS:85084022236

T2 - 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019

Y2 - 30 July 2019 through 2 August 2019

ER -

Investigation of the energy carrying outer layer structures in adverse pressure gradient flows

Özet

???event.eventtypes.event.conference???

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Finansman

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