TY - JOUR
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
N1 - Publisher Copyright:
© 2023 The Korean Society of Mechanical Engineers.
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 - http://www.scopus.com/inward/record.url?scp=85176146339&partnerID=8YFLogxK
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 -