Pitot Pressure Measurements for a Supersonic Annular Ejector with Conical Mixing Chamber
The pitot pressure can directly reflect the flow characteristics of the supersonic ejector,but measuring it along a conical mixing chamber is challenging due to the conical structure.A pitot pressure measuring device was provided,which continuously moved along flow and radial directions of the conical mixing chamber.This device allowed for obtaining high spatial resolution pitot pressure on different flow cross-sections.To validate the effectiveness of the measuring device,experiments were conducted on the conical mixing chamber of the supersonic annular ejector.The measured pitot pressure had a minimum radial spatial resolution of 1mm,and the pitot pressure profiles clearly revealed the boundary layer,the mixing layer,the primary and secondary flow fields.Results also showed that the mixing layer thickness based on pitot pressure increases linearly with the flow distance within a certain flow distance;and the normalized growth rate of the mixing layer was in good agreement with the experimental results reported earlier,which furtherly verified the reliability of the measurement method.
NETL
NSTL
万方数据
维普
