IMECH-IR  > 高温气体动力学国家重点实验室
Measurement of temperature, velocity and water vapor concentration in a scramjet combustor based on nearinfrared diode laser absorption
Li F(李飞); Yu XL(余西龙); Gu HB(顾洪斌); Li Z(李智); Chen LH(陈立红); Zhang XY(张新宇); Li F(李飞)
Source Publication17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference 2011
2011
PagesAIAA 2011-2214
Conference Name17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Conference DateAPR 11-14, 2011
Conference PlaceSan Francisco, CA, United states
AbstractA multi-channel Tunable Diode Laser Absorption Spectroscopy (TDLAS) system was designed and constructed for flow parameters diagnostics in a scramjet combustor. Two fiber coupled distributed feedback (DFB) lasers with narrow line width were used to probe two H2O absorption features (7185.597cm-1,7444.35cm-1+7444.37cm-1(c ombined)) by using direct absorption Time-Division-Multiplexing (TDM) strategy at a 4-kHz repetition rate. Laser light was split into five beams and transmitted across the test region. Two motorized precision translation stages were used to move the collimators during the test, so that the three beams located near the cavity and at the exit of the combustor can scan the cross sections respectively. Flow parameters could be obtained simultaneous which included average temperature, water vapor concentration and velocity at the entrance of the combustor, the distribution of temperature, water vapor concentration at a cross section near the cavity, the distribution of temperature, water vapor concentration and velocity at the exit cross section of the combustor. The parameters of the flow entering and exiting the combustor could be used to evaluate the performance of the direct-connected scramjet facility and the combustion efficiency of the combustor. The parameters at the cross section in the combustor could also be used to analysis combustion characteristics in the combustor.
DepartmentLHD高温气流激光诊断
Funding OrganizationAmerican Institute of Aeronautics and Astronautics (AIAA)
ISBN978-1-60086-942-6
URL查看原文
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48286
Collection高温气体动力学国家重点实验室
Corresponding AuthorLi F(李飞)
Recommended Citation
GB/T 7714
Li F,Yu XL,Gu HB,et al. Measurement of temperature, velocity and water vapor concentration in a scramjet combustor based on nearinfrared diode laser absorption[C]:AMER INST AERONAUT ASTRONAUT, RESTON,2011:AIAA 2011-2214.
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