航天推进技术研究院主办
YU Liang,YUAN Shu-sheng.Simulation study of mixing characteristics of RQL combustor based on equivalent theory[J].Journal of Rocket Propulsion,2013,39(02):19-23.
基于等效理论的RQL燃烧室掺混特性研究
- Title:
- Simulation study of mixing characteristics of RQL combustor based on equivalent theory
- 文章编号:
- 1672-9374(2013)02-0019-05
- Keywords:
- RQL combustor; turbulence flow field; RNG k-ε model; temperature equivalent; numerical simulation
- 分类号:
- V434+.13
- 文献标志码:
- A
- 摘要:
- 采用RNG k-ε湍流模型对RQL(rich-burn/quick-quench/lean-burn)燃烧室内气流的掺混过程进行了数值模拟,运用等效思想,通过对混合流场内部温度、近壁区温度以及出口温度的分析,讨论不同掺混角度和掺混射流速度对RQL燃烧室混合特性的影响,进而了解RQL燃烧室工作时热流流场的结构状况。研究结果表明,不同的掺混气流入射角度和速度,对RQL燃烧室内气流掺混的高温区位置、壁面温度以及出口温度分布的影响明显。
- Abstract:
- RNG k-ε turbulent model was applied to the numerical simulation of turbulent mixing processes in a RQL(rich-burn/quick-quench/lean-burn) gas turbine combustor. The influence of different mixing angle and mixing jet velocity on mixing characteristics of RQL combustor is discussed based on the concept of equivalent isothermal flow, and according to the analysis results of internal temperature of mixing flow field, temperature distribution near wall region and temperature at outlet. SIMPLE algorithm was used to solve the finite difference equations. The calculations are in agreement with experimental data. The research results indicate that it is obvious that the mixing incident angle and velocity affect the high-temperature mixing flow zone location inside the RQL combustor, the temperature on wall surface and the temperature distribution at the outlet.
参考文献/References:
[1]DOERR T, HENNECKE D K. The mixing process in the reacting zone of the Rich-Lean-Combustion concept[C]// Proceeding of the 81st Symp of the Propulsion and Energetics Panel. Fiuggi, Italy: AGARD, 1993: 54-60.
[2]KALOGIROU D I, PAPAILIOU D D. Turbulent heat transfer processes in a multiple jet confined cross flow configuration [C]// Proceeding of 55 Eurotherm Seminar on Heat Transfer in Single Flows. Greece: ESHTSF, 1997: 1-9.
[3]HEITOR M V. Velocity and scalar measurements in model and real gas turbine combustors[J]. Instrumentation for Combustion and Flow in engines, 1989, 154: 38-44.
备注/Memo
收稿日期:2012-10-31;修回日期:2013-03-13
作者简介:于亮(1982—),男,博士研究生,研究领域为航空发动机推进剂性能