摘要
运用数值模拟手段实现了额定状态、最大状态和全加力状态下某室内发动机试车台推力的气动校准,并初步验证了计算准确性。结果表明:数值计算较好地模拟了室内发动机试车台内气流的流动情况,各部分修正阻力在变化趋势和数值范围上合理可信;大流量状态下进气冲量对推力校准的影响最为显著,喷口阻力和进气道附加阻力也有一定的影响。
The thrust aerodynamic correction of an aero-engine in an indoor engine test cell is researched under the rating state, the maximum power state and the full afterburner state. The work is based on a 3D computational fluid dynamic （CFD） method with NUMECA software and it includes a preliminary validation about calculation accuracy. The results demonstrate that the flow of air in the indoor engine test cell is predicted successfully, and the thrust correction terms are reasonable and reliable in the trend and range of values. Under high engine mass-flow conditions, Inlet Momentum Drag has significant impact on thrust correction. At the same time, Additive Drag and Suction Drag also affect the thrust correction to some extent.
出处
《工程力学》
EI
CSCD
北大核心
2012年第6期308-313,共6页
Engineering Mechanics
基金
国家自然科学基金重点项目(60934001)
关键词
航空发动机
室内试车台
数值模拟
推力
气动校准
aero-engine
indoor test cell
numerical simulation
thrust
aerodynamic correction
