Penetration and Combustion Studies of Tandem Liquid Jets in Supersonic Crossflow

Penetration of a kerosene liquid jet injected in a high temperature Mach 2 supersonic crossflow

“…Moreover, small shocks can also be seen between the main bow shock and the liquid waves along the liquid column. These "microshocks", also evidenced by Sathiyamoorthy et al 2020 on tandem liquid jets injection configurations in supersonic crossflow, are following every wave travelling along the liquid column. Due to a lack of spatial resolution, it is hard to say if they emerge from the interaction between the separation shock and the bow shock or a little further downstream from the liquid wave itself.…”

“…Many injection strategies depending on the combustor configuration or the Mach flight number have been proposed to enhance atomization and vaporization, such as a single aerated liquid jet (Ghenai et al, 2009, K.C. Lin et al, 2020, tandem liquid jets (Sathiyamoorthy et al, 2020) or through an aeroramp (Anderson and Schetz, 2005). Moreover, injection configurations have been proposed to enhance the combustion stabilization with a cavity (Nakaya et al, 2005), in the wake of a pylon (Gruber et al, 2008) or with a strut injection (Chang et al, 2018).…”

An Empirical Correlation for the Penetration of a Cryogenic Liquid Jet into a Gaseous Crossflow

“…The correlation between liquid injection velocity, orifice diameter, gas crossflow speed, and transverse penetration depth has been discussed for injection of three different liquids (Water, Jet-A, and N-Heptane). Correlations of jet penetration are also available for experimental investigations of transverse injections in supersonic flows as pursued by Sathiyamoorthy et al [8] and Anavaradham et al [9]. The jet trajectory is obtained based on schlieren images which are post-processed further.…”

“…Interaction between tandem liquid jets from one or more orifices injected into a crossflowing fluid has been a recent research area. Sathiyamoorthy et al [8] have analyzed the effect of tandem-hole configuration on liquid transverse penetration and combustion in supersonic crossflow. They have concluded that higher penetration was achieved for tandem-hole configurations.…”

“…The authors claim that such a method captures low-density droplets in the far-field regions of the spray not visible when profile data from all images are averaged. In the study by Sathiyamoorthy et al [8], chemiluminescence techniques are used to visualize combustion phenomenon in addition to crossflow injection profile viewed via shadowgraph. This paper examines the injection of a cryogenic liquid into a gaseous stream of the same species under conditions where rapid liquid atomization and significant vaporization occur.…”