Experimental and Computational Investigation for In-Line Boundary Layer Ingestion
Experimental and Computational Investigation for In-Line Boundary Layer Ingestion
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DOI：
10.2514/6.2019-3037
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发表时间：
2019-06
期刊：
影响因子：
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通讯作者：
Lucas L. Kob;John James Doherty;D. Birch
中科院分区：
文献类型：
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作者：
Lucas L. Kob;John James Doherty;D. Birch
本文通过实验和计算分析，研究了一种后体直列安装附面层进气道电涵道风扇推进装置系统的气动特性。模块化风洞模型允许结合风扇速度来评估推进装置系统几何形状的变化。采用了多种实验测量技术，包括LDA、七孔探针和表面压力。推进装置系统也进行了研究，使用RANS计算流体动力学和实验数据的比较。在CFD中有效地代表风扇的边界条件的调查。初步结果表明，在速度分布和表面压力方面，计算流体动力学和实验之间的一致性相当好，但突出显示了流动分离情况下的剩余差异。
The aerodynamic characteristics of an aft-body, in-line mounted, boundary layer ingesting, electric ducted fan, propulsion installation system has been investigated through experimental and computational analysis. A modular wind-tunnel model allows variation in the geometry of the propulsion installation system to be assessed, in combination with fan speed. Various experimental measurement techniques, including LDA, seven-hole-probe and surface pressures are employed. The propulsion installation system has also been investigated using RANS CFD and comparison with experimental data is presented. An investigation of the boundary conditions for efficiently representing the fan in CFD is described. Initial results show reasonably good agreement between CFD and experiment, in terms of velocity profiles and surface pressures, but highlight remaining differences for cases exhibiting flow separation.