点击次数：
所属单位：能源与动力学院
发表刊物：JOURNAL OF AEROSPACE ENGINEERING
关键字：Splitter plate Turbine-based combined-cycle Fluid-structure interaction Inlet unstart
摘要：A splitter plate is a key component of the inlet system in turbine-based combined-cycle engines, which divides the whole captured air flow into different engines, namely turbojet and ramjet. The aerodynamic force acting on the thin splitter plate with a single pivot may engender vibration and, in turn, flow-field variations at the start and end of the mode transition phase. A loosely-coupled method was used to simulate the process of fluid-structure interaction. The results showed that the deformation of the splitter plate is, in fact, a process in which the elastic restoring force struggles against the aerodynamic force under the action of damping. At turbojet mode, the splitter plate can attain the maximum displacement of 7.20 mm. The terminal shock was observed to move back and forth in the flowpath. The mass flow rate in turbojet and ramjet flowpaths varied by 5.91 and 44.34%, respectively. At ramjet mode, the inlet fell into the unstart state with a greater displacement of 8.95 mm. The mass flow rate in turbojet and ramjet flowpaths, and slot-coupled cavity varied by 1.69, 23.91, and 51.85%, respectively. (C) 2017 American Society of Civil Engineers.
ISSN号：0893-1321
是否译文：否
发表时间：2017-07-01
合写作者：秦启豪,郭帅
通讯作者：徐惊雷