Effect of the Smagorinsky Constant on Turbulent Combustion Characteristics for GH2/LOx Shear Coaxial Injectors at Supercritical Pressure

Tae Jun Jeon; Tae Seon Park

doi:10.3795/KSME-B.2023.47.10.509

Effect of the Smagorinsky Constant on Turbulent Combustion Characteristics for GH₂/LOx Shear Coaxial Injectors at Supercritical Pressure

Tae Jun Jeon
, Tae Seon Park

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of Smagorinsky constant C_s on gaseous hydrogen/liquid oxygen combustion at supercritical pressures was investigated using large-eddy simulations based on the fourth order compact convection scheme. As C_s increased, flame temperatures decreased and coherent turbulent structures and streamwise vortices were weakened. In addition, for C_s values greater than 0.1, the kurtosis and skewness values were deviated from the range observed in general turbulent flows. Based on these results, the appropriate range for C_s was determined to be C_s ≤ 0.1.

Original language	English
Pages (from-to)	509-518
Number of pages	10
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	47
Issue number	10
DOIs	https://doi.org/10.3795/KSME-B.2023.47.10.509
State	Published - 2023

Keywords

Large-Eddy Simulation
Smagorinsky Constant
Transcritical Combustion

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title = "Effect of the Smagorinsky Constant on Turbulent Combustion Characteristics for GH2/LOx Shear Coaxial Injectors at Supercritical Pressure",

abstract = "The effect of Smagorinsky constant Cs on gaseous hydrogen/liquid oxygen combustion at supercritical pressures was investigated using large-eddy simulations based on the fourth order compact convection scheme. As Cs increased, flame temperatures decreased and coherent turbulent structures and streamwise vortices were weakened. In addition, for Cs values greater than 0.1, the kurtosis and skewness values were deviated from the range observed in general turbulent flows. Based on these results, the appropriate range for Cs was determined to be Cs ≤ 0.1.",

keywords = "Large-Eddy Simulation, Smagorinsky Constant, Transcritical Combustion",

author = "Jeon, \{Tae Jun\} and Park, \{Tae Seon\}",

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doi = "10.3795/KSME-B.2023.47.10.509",

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T1 - Effect of the Smagorinsky Constant on Turbulent Combustion Characteristics for GH2/LOx Shear Coaxial Injectors at Supercritical Pressure

AU - Jeon, Tae Jun

AU - Park, Tae Seon

PY - 2023

Y1 - 2023

N2 - The effect of Smagorinsky constant Cs on gaseous hydrogen/liquid oxygen combustion at supercritical pressures was investigated using large-eddy simulations based on the fourth order compact convection scheme. As Cs increased, flame temperatures decreased and coherent turbulent structures and streamwise vortices were weakened. In addition, for Cs values greater than 0.1, the kurtosis and skewness values were deviated from the range observed in general turbulent flows. Based on these results, the appropriate range for Cs was determined to be Cs ≤ 0.1.

AB - The effect of Smagorinsky constant Cs on gaseous hydrogen/liquid oxygen combustion at supercritical pressures was investigated using large-eddy simulations based on the fourth order compact convection scheme. As Cs increased, flame temperatures decreased and coherent turbulent structures and streamwise vortices were weakened. In addition, for Cs values greater than 0.1, the kurtosis and skewness values were deviated from the range observed in general turbulent flows. Based on these results, the appropriate range for Cs was determined to be Cs ≤ 0.1.

KW - Large-Eddy Simulation

KW - Smagorinsky Constant

KW - Transcritical Combustion

UR - https://www.scopus.com/pages/publications/85176146339

U2 - 10.3795/KSME-B.2023.47.10.509

DO - 10.3795/KSME-B.2023.47.10.509

M3 - Article

AN - SCOPUS:85176146339

SN - 1226-4881

VL - 47

SP - 509

EP - 518

JO - Transactions of the Korean Society of Mechanical Engineers, B

JF - Transactions of the Korean Society of Mechanical Engineers, B

IS - 10

ER -

Effect of the Smagorinsky Constant on Turbulent Combustion Characteristics for GH₂/LOx Shear Coaxial Injectors at Supercritical Pressure

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