Experimental device for low swirl combustor flow characteristic study

The invention discloses an experimental device for a low swirl combustor flow field characteristic study. The device is composed of a low swirl combustor flowing area experimental part, a PIV test bench, a PIV testing system and a flow velocity measurement system and can achieve the measurement of velocity vector distribution of an outlet of a swirler under different rotational flow structure parameters and incoming flow conditions. The device can be used for conducting the flow characteristic study on a novel low swirl combustor using hydrogen-rich fuel or pure-hydrogen fuel based on the particle image velocimetry (PIV) testing technology to overcome the technical difficulty existing during low swirl combustion (LSC) design. The low swirl combustor flow area experimental part can achieve replacement of swirlers and simulation of the flow characteristic of the low swirl combustor. The PIV test bench is provided with an adjustable support and can be used for adjusting a PIV testing area. The device can be used for a visual experimental study on flowing velocity vector distribution of the low swirl combustor.