Direct numerical simulation of an equilibrium adverse pressure gradient turbulent boundary layer at the verge of separation

Vassili Kitsios; Callum Atkinson; Juan A. Sillero; Guillem Borrell; Ayse Gul Gungor; Javier Jiménez; Julio Soria

Direct numerical simulation of an equilibrium adverse pressure gradient turbulent boundary layer at the verge of separation

Vassili Kitsios^*, Callum Atkinson, Juan A. Sillero, Guillem Borrell, Ayse Gul Gungor, Javier Jiménez, Julio Soria

^*Corresponding author for this work

Department of Astronautical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The statistics and structure of a self-similar equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) are investigated using a direct numerical simulation (DNS) of the flow at the verge of separation. Flow simulations are performed using the DNS TBL code of Simens et al. [8] and Borrell et al. [1] with the desired equilibrium APG achieved via the use of a tailored far-field boundary condition. The APG TBL develops over a momentum thickness based Reynolds number of Re_θ ≈ 2000 to 6000, achieving a region of constant friction coefficient (C_f), pressure velocity (up) and shape factor (H). One- and two-point statistics are presented under both inner wall (uτ) and pressure velocity (up) based scaling.

Original language	English
Publication status	Published - 2015
Event	15th European Turbulence Conference, ETC 2015 - Delf, Netherlands Duration: 25 Aug 2015 → 28 Aug 2015

Conference

Conference	15th European Turbulence Conference, ETC 2015
Country/Territory	Netherlands
City	Delf
Period	25/08/15 → 28/08/15

Bibliographical note

Publisher Copyright:
© TU Delft.

Funding

The authors acknowledge the research funding from the Australian Research Council and European Research Council, and the computational resources provided by NCI and PRACE.

Funders	Funder number
National Computational Infrastructure
European Research Council
Australian Research Council
Partnership for Advanced Computing in Europe AISBL

Cite this

@conference{cb30c2da79f5471bb80be4f55aac7dd8,

title = "Direct numerical simulation of an equilibrium adverse pressure gradient turbulent boundary layer at the verge of separation",

abstract = "The statistics and structure of a self-similar equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) are investigated using a direct numerical simulation (DNS) of the flow at the verge of separation. Flow simulations are performed using the DNS TBL code of Simens et al. [8] and Borrell et al. [1] with the desired equilibrium APG achieved via the use of a tailored far-field boundary condition. The APG TBL develops over a momentum thickness based Reynolds number of Reθ ≈ 2000 to 6000, achieving a region of constant friction coefficient (Cf), pressure velocity (up) and shape factor (H). One- and two-point statistics are presented under both inner wall (uτ) and pressure velocity (up) based scaling.",

author = "Vassili Kitsios and Callum Atkinson and Sillero, \{Juan A.\} and Guillem Borrell and Gungor, \{Ayse Gul\} and Javier Jim{\'e}nez and Julio Soria",

note = "Publisher Copyright: {\textcopyright} TU Delft.; 15th European Turbulence Conference, ETC 2015 ; Conference date: 25-08-2015 Through 28-08-2015",

year = "2015",

language = "English",

}

TY - CONF

T1 - Direct numerical simulation of an equilibrium adverse pressure gradient turbulent boundary layer at the verge of separation

AU - Kitsios, Vassili

AU - Atkinson, Callum

AU - Sillero, Juan A.

AU - Borrell, Guillem

AU - Gungor, Ayse Gul

AU - Jiménez, Javier

AU - Soria, Julio

PY - 2015

Y1 - 2015

N2 - The statistics and structure of a self-similar equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) are investigated using a direct numerical simulation (DNS) of the flow at the verge of separation. Flow simulations are performed using the DNS TBL code of Simens et al. [8] and Borrell et al. [1] with the desired equilibrium APG achieved via the use of a tailored far-field boundary condition. The APG TBL develops over a momentum thickness based Reynolds number of Reθ ≈ 2000 to 6000, achieving a region of constant friction coefficient (Cf), pressure velocity (up) and shape factor (H). One- and two-point statistics are presented under both inner wall (uτ) and pressure velocity (up) based scaling.

AB - The statistics and structure of a self-similar equilibrium adverse pressure gradient (APG) turbulent boundary layer (TBL) are investigated using a direct numerical simulation (DNS) of the flow at the verge of separation. Flow simulations are performed using the DNS TBL code of Simens et al. [8] and Borrell et al. [1] with the desired equilibrium APG achieved via the use of a tailored far-field boundary condition. The APG TBL develops over a momentum thickness based Reynolds number of Reθ ≈ 2000 to 6000, achieving a region of constant friction coefficient (Cf), pressure velocity (up) and shape factor (H). One- and two-point statistics are presented under both inner wall (uτ) and pressure velocity (up) based scaling.

UR - https://www.scopus.com/pages/publications/85085779930

M3 - Paper

AN - SCOPUS:85085779930

T2 - 15th European Turbulence Conference, ETC 2015

Y2 - 25 August 2015 through 28 August 2015

ER -

Direct numerical simulation of an equilibrium adverse pressure gradient turbulent boundary layer at the verge of separation

Abstract

Conference

Bibliographical note

Funding

Other files and links

Fingerprint

Cite this