Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment

Avick Sinha; P.A. Rajiwade

doi:10.1201/9781003725022-30

Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment

School of Arch, Tech and Eng

Research output: Chapter in Book/Conference proceeding with ISSN or ISBN › Conference contribution with ISSN or ISBN › peer-review

Abstract

This study evaluates the performance of k-ε turbulence models in simulating under-expanded sonic jet flows in a quiescent medium, with a particular focus on shock cell structures, turbulence intensity, and velocity profiles. Numerical simulations were conducted using explicit and implicit solvers with and without compressibility corrections, and the results were validated against data from the literature. The inclusion of compressibility corrections significantly improved the accuracy of the predicted shock cell structures, especially in the far field, where the oscillatory nature of the velocity and turbulence profiles was captured effectively. The analysis revealed that higher inlet turbulence intensity (10%) enhanced near-field mixing and momentum dissipation, while turbulence intensity converged in the far field regardless of initial conditions.

Original language	English
Title of host publication	Advances in Thermal System, Materials and Design Engineering
Editors	P.A. Rajiwade, N.P. Gulhane
Place of Publication	London
Publisher	Routledge
Chapter	30
Number of pages	8
Edition	1
ISBN (Print)	9781041209607
DOIs	https://doi.org/10.1201/9781003725022-30
Publication status	Accepted/In press - 30 Nov 2024
Event	Second International Conference on Advances in Thermal Systems, Materials and Design Engeneeing - Veermata Jijabai Technological Institute, Mumbai, India Duration: 27 Dec 2024 → 28 Dec 2024 https://vjti.ac.in/atsmde-2024/

Conference

Conference	Second International Conference on Advances in Thermal Systems, Materials and Design Engeneeing
Abbreviated title	ATSMDE-2024
Country/Territory	India
City	Mumbai
Period	27/12/24 → 28/12/24
Internet address	https://vjti.ac.in/atsmde-2024/

Keywords

CFD
Sonic jet
Compressible flow
Shock structure
Mach disk
Turbulent jet flow

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10.1201/9781003725022-30

Cite this

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title = "Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment",

abstract = "This study evaluates the performance of k-ε turbulence models in simulating under-expanded sonic jet flows in a quiescent medium, with a particular focus on shock cell structures, turbulence intensity, and velocity profiles. Numerical simulations were conducted using explicit and implicit solvers with and without compressibility corrections, and the results were validated against data from the literature. The inclusion of compressibility corrections significantly improved the accuracy of the predicted shock cell structures, especially in the far field, where the oscillatory nature of the velocity and turbulence profiles was captured effectively. The analysis revealed that higher inlet turbulence intensity (10\%) enhanced near-field mixing and momentum dissipation, while turbulence intensity converged in the far field regardless of initial conditions.",

keywords = "CFD, Sonic jet, Compressible flow, Shock structure, Mach disk, Turbulent jet flow",

author = "Avick Sinha and P.A. Rajiwade",

year = "2024",

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booktitle = "Advances in Thermal System, Materials and Design Engineering",

publisher = "Routledge",

edition = "1",

note = "Second International Conference on Advances in Thermal Systems, Materials and Design Engeneeing, ATSMDE-2024 ; Conference date: 27-12-2024 Through 28-12-2024",

url = "https://vjti.ac.in/atsmde-2024/",

}

Sinha, A & Rajiwade, PA 2026, Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment. in PA Rajiwade & NP Gulhane (eds), Advances in Thermal System, Materials and Design Engineering. 1 edn, Routledge, London, Second International Conference on Advances in Thermal Systems, Materials and Design Engeneeing, Mumbai, India, 27/12/24. https://doi.org/10.1201/9781003725022-30

Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment. / Sinha, Avick; Rajiwade, P.A.
Advances in Thermal System, Materials and Design Engineering. ed. / P.A. Rajiwade; N.P. Gulhane. 1. ed. London: Routledge, 2026.

Research output: Chapter in Book/Conference proceeding with ISSN or ISBN › Conference contribution with ISSN or ISBN › peer-review

TY - GEN

T1 - Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment

AU - Sinha, Avick

AU - Rajiwade, P.A.

PY - 2024/11/30

Y1 - 2024/11/30

N2 - This study evaluates the performance of k-ε turbulence models in simulating under-expanded sonic jet flows in a quiescent medium, with a particular focus on shock cell structures, turbulence intensity, and velocity profiles. Numerical simulations were conducted using explicit and implicit solvers with and without compressibility corrections, and the results were validated against data from the literature. The inclusion of compressibility corrections significantly improved the accuracy of the predicted shock cell structures, especially in the far field, where the oscillatory nature of the velocity and turbulence profiles was captured effectively. The analysis revealed that higher inlet turbulence intensity (10%) enhanced near-field mixing and momentum dissipation, while turbulence intensity converged in the far field regardless of initial conditions.

AB - This study evaluates the performance of k-ε turbulence models in simulating under-expanded sonic jet flows in a quiescent medium, with a particular focus on shock cell structures, turbulence intensity, and velocity profiles. Numerical simulations were conducted using explicit and implicit solvers with and without compressibility corrections, and the results were validated against data from the literature. The inclusion of compressibility corrections significantly improved the accuracy of the predicted shock cell structures, especially in the far field, where the oscillatory nature of the velocity and turbulence profiles was captured effectively. The analysis revealed that higher inlet turbulence intensity (10%) enhanced near-field mixing and momentum dissipation, while turbulence intensity converged in the far field regardless of initial conditions.

KW - CFD

KW - Sonic jet

KW - Compressible flow

KW - Shock structure

KW - Mach disk

KW - Turbulent jet flow

U2 - 10.1201/9781003725022-30

DO - 10.1201/9781003725022-30

M3 - Conference contribution with ISSN or ISBN

SN - 9781041209607

BT - Advances in Thermal System, Materials and Design Engineering

A2 - Rajiwade, P.A.

A2 - Gulhane, N.P.

PB - Routledge

CY - London

T2 - Second International Conference on Advances in Thermal Systems, Materials and Design Engeneeing

Y2 - 27 December 2024 through 28 December 2024

ER -

Assessing k-ε Family Turbulence Models for a Study of Sonic Jet Flow in a Quiescent Environment

Abstract

Conference

Keywords

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