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

Research output: Contribution to conferencePaper

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.

Original languageEnglish
Number of pages2
Publication statusPublished - 2015
EventEuropean Turbulence Conference 2015 - Delf, Netherlands
Duration: 25 Aug 201528 Aug 2015
Conference number: 15th

Conference

ConferenceEuropean Turbulence Conference 2015
Abbreviated titleETC 2015
CountryNetherlands
CityDelf
Period25/08/1528/08/15

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