Research on experimental simulation method of non-uniform inflow under high temperature and strong swirling condition
In response to the characteristics of high-temperature,strong swirl,and non-uniform inflow at the intake of the new generation integrated afterburner,a high-temperature,strong-swirl,non-uniform inlet flow field generation device that can simulate the real intake conditions of an integrated afterburner was designed.At the same time,numerical simulations of the non-uniform flow field coupling inlet Mach number,temperature,and swirl angle were conducted to assess the effectiveness of the design of the non-uniform flow generation device,measurement methods,and evaluation criteria.The accuracy of the numerical simulations was verified through experimental results.The results showed that the numerical calculation of the swirl angle error near the wall was approximately±2° due to the underestimation of wall dissipation in the numerical calculations,while it was better than±2° in the central area.Similarly,in the simulation of Mach number non-uniformity,the error in the mainstream area was within 10％;in addition,the simulation of temperature non-uniformity showed larger errors,due to the numerical calculations not considering the heat transfer process from the wall to the outside.Overally,the high-temperature,strong-swirl,non-uniform generation device proposed can generate the real complex non-uniform inlet flow field conditions faced by the intake of the next-generation integrated afterburner.The numerical simulation method used can reveal the flow field's non-uniform characteristics quite accurately.
integrated afterburnerhigh temperature and strong swirling conditionnon-uniform inflow generatornon-uniform space distributionuniformity index
NETL
NSTL
万方数据
