Skewness effects on the turbulence structure in a high-speed compressible and multi-component inert mixing layers

Radouan Boukharfane; Aimad Er-Raiy; Matteo Parsani; Bilel Hadri

doi:10.2514/6.2021-2915

Skewness effects on the turbulence structure in a high-speed compressible and multi-component inert mixing layers

Radouan Boukharfane, Aimad Er-Raiy, Matteo Parsani, Bilel Hadri

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

This work presents the analysis of the effects of the misalignment angle between two asymptotic streams of fluid, $\zeta$, whose interaction leads to a turbulent mixing region. In fact, spatially evolving mixing layers may see their turbulent structure statistics altered in the presence of the skew angle $\zeta$. The investigation is conducted by analyzing a new set of direct numerical simulations of spatially-developing compressible non-reactive hydrogen--air shear layers. To assess the effects associated to misalignment angle, the turbulent structure statistics of a skewed configuration with $\zeta=15^{\circ}$ are compared to the reference case where no skewness is introduced. The analysis of the mixing layer time-averaged statistics reveals the ability of the skewness to accelerate the inlet structures growth which, consequently, yields to a substantial enhancement of the mixing efficiency.

Original language	English (US)
Title of host publication	AIAA AVIATION 2021 FORUM
Publisher	American Institute of Aeronautics and Astronautics
ISBN (Print)	9781624106101
DOIs	https://doi.org/10.2514/6.2021-2915
State	Published - Jul 28 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-08-05
Acknowledgements: The research reported in this paper was funded by King Abdullah University of Science and Technology. We are thankful for the computing resources of the Supercomputing Laboratory and the Extreme Computing Research Center at King Abdullah University of Science and Technology. The authors are thankful to Alexandre Ern (Université Paris-Est, CERMICS , ENPC, France) and Vincent Giovangigli (CMAP, and École Polytechnique, France) for providing us with the library EGLIB.

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10.2514/6.2021-2915

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@inproceedings{e02ec2e6418442ea8881ae18094dc3d0,

title = "Skewness effects on the turbulence structure in a high-speed compressible and multi-component inert mixing layers",

abstract = "This work presents the analysis of the effects of the misalignment angle between two asymptotic streams of fluid, $\zeta$, whose interaction leads to a turbulent mixing region. In fact, spatially evolving mixing layers may see their turbulent structure statistics altered in the presence of the skew angle $\zeta$. The investigation is conducted by analyzing a new set of direct numerical simulations of spatially-developing compressible non-reactive hydrogen--air shear layers. To assess the effects associated to misalignment angle, the turbulent structure statistics of a skewed configuration with $\zeta=15^{\circ}$ are compared to the reference case where no skewness is introduced. The analysis of the mixing layer time-averaged statistics reveals the ability of the skewness to accelerate the inlet structures growth which, consequently, yields to a substantial enhancement of the mixing efficiency.",

author = "Radouan Boukharfane and Aimad Er-Raiy and Matteo Parsani and Bilel Hadri",

note = "KAUST Repository Item: Exported on 2021-08-05 Acknowledgements: The research reported in this paper was funded by King Abdullah University of Science and Technology. We are thankful for the computing resources of the Supercomputing Laboratory and the Extreme Computing Research Center at King Abdullah University of Science and Technology. The authors are thankful to Alexandre Ern (Universit{\'e} Paris-Est, CERMICS , ENPC, France) and Vincent Giovangigli (CMAP, and {\'E}cole Polytechnique, France) for providing us with the library EGLIB.",

year = "2021",

month = jul,

day = "28",

doi = "10.2514/6.2021-2915",

language = "English (US)",

isbn = "9781624106101",

booktitle = "AIAA AVIATION 2021 FORUM",

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T1 - Skewness effects on the turbulence structure in a high-speed compressible and multi-component inert mixing layers

AU - Boukharfane, Radouan

AU - Er-Raiy, Aimad

AU - Parsani, Matteo

AU - Hadri, Bilel

N1 - KAUST Repository Item: Exported on 2021-08-05 Acknowledgements: The research reported in this paper was funded by King Abdullah University of Science and Technology. We are thankful for the computing resources of the Supercomputing Laboratory and the Extreme Computing Research Center at King Abdullah University of Science and Technology. The authors are thankful to Alexandre Ern (Université Paris-Est, CERMICS , ENPC, France) and Vincent Giovangigli (CMAP, and École Polytechnique, France) for providing us with the library EGLIB.

PY - 2021/7/28

Y1 - 2021/7/28

N2 - This work presents the analysis of the effects of the misalignment angle between two asymptotic streams of fluid, $\zeta$, whose interaction leads to a turbulent mixing region. In fact, spatially evolving mixing layers may see their turbulent structure statistics altered in the presence of the skew angle $\zeta$. The investigation is conducted by analyzing a new set of direct numerical simulations of spatially-developing compressible non-reactive hydrogen--air shear layers. To assess the effects associated to misalignment angle, the turbulent structure statistics of a skewed configuration with $\zeta=15^{\circ}$ are compared to the reference case where no skewness is introduced. The analysis of the mixing layer time-averaged statistics reveals the ability of the skewness to accelerate the inlet structures growth which, consequently, yields to a substantial enhancement of the mixing efficiency.

AB - This work presents the analysis of the effects of the misalignment angle between two asymptotic streams of fluid, $\zeta$, whose interaction leads to a turbulent mixing region. In fact, spatially evolving mixing layers may see their turbulent structure statistics altered in the presence of the skew angle $\zeta$. The investigation is conducted by analyzing a new set of direct numerical simulations of spatially-developing compressible non-reactive hydrogen--air shear layers. To assess the effects associated to misalignment angle, the turbulent structure statistics of a skewed configuration with $\zeta=15^{\circ}$ are compared to the reference case where no skewness is introduced. The analysis of the mixing layer time-averaged statistics reveals the ability of the skewness to accelerate the inlet structures growth which, consequently, yields to a substantial enhancement of the mixing efficiency.

UR - http://hdl.handle.net/10754/670411

UR - https://arc.aiaa.org/doi/10.2514/6.2021-2915

U2 - 10.2514/6.2021-2915

DO - 10.2514/6.2021-2915

M3 - Conference contribution

SN - 9781624106101

BT - AIAA AVIATION 2021 FORUM

PB - American Institute of Aeronautics and Astronautics

ER -

Skewness effects on the turbulence structure in a high-speed compressible and multi-component inert mixing layers

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