Numerical study of high-pressure GO(2)/GH(2) combustion of a single-element injector

作者：Wang XiaoWei^*; Cai GuoBiao; Huo HongFa

来源：Science in China - Series E: Technological Sciences , 2012, 55(10): 2757-2768.

DOI：10.1007/s11431-012-4945-z

• Large-Eddy Simulation
• Reynolds Averaged Navier-Stokes equations
• turbulent combustion
• rocket
• numerical simulation

A single-element shear-coaxial combustor using gaseous hydrogen (GH(2)) and oxygen (GO(2)) was designed and hot-tested. The wall temperature was measured. The combustion flow-field of this GH(2)/GO(2) single-element combustor was modeled by RANS (Reynolds Averaged Navier-Stokes) and LES (Large Eddy Simulation) methods respectively. The impact of using various turbulence and turbulent combustion models was investigated to obtain the model combination which best represented the experimental data in the RANS modeling. The flamelet model was used in the LES modeling and the validity of its application to the GH(2)/GO(2) combustion in the combustor was carefully examined. The combustor wall heat flux distributions of both RANS and LES results show good agreement with the experimental data. The experimental wall temperature distribution can be clearly explained through analyzing the inner flowfield structure. The results indicate that both RANS and LES used in this paper can give good predictions of the development of the whole flowfield and the combustion completion length. LES can resolve large-scale flow motions in the combustor and accurately predict the influence of the wall heat loss on the combustion efficiency.

• 出版日期2012-10
• 单位北京航空航天大学