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Characteristic analysis on exhaust diffuser of civil aviation engine in altitude simulation test
Author(s): 
Pages: 9-13,20
Year: Issue:  6
Journal: Gas Turbine Experiment and Research

Keyword:  高空模拟试车台(高空台)排气扩压器增压比大涵道比涡扇发动机分开排气;
Abstract: 基于射流理论分析了民用航空发动机高空模拟试验时的排气流场,应用喷射器模型建立了针对民用航空发动机排气扩压器气动性能的计算方法,并完成了民用航空发动机试验的排气扩压器性能计算.分析了排气扩压器出口的增压比、马赫数、总温、体积流量,与排气扩压器内径和二股流流量之间的关系.基于计算分析结果,建议民用航空发动机高空模拟试车台排气采用直接喷水冷却方式,高空模拟试验时尽可能控制二股流流量.
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