Effects of Momentum Raito on Spray Characteristics of Pintle Injector with Single Row Slots
In order to obtain the breakup process and spray characteristics of gas-liquid pintle injector with single row slots,the breakup process,spray density and droplets diameter distribution were studied by experimental and numerical simulation methods.The results show that the radial liquid jets were deformed and broken under the shear action of axial gas sheet.Both penetration depth and breakup length increases with the momentum ratio increasing.The liquid density in the center of spray field decreases with the momentum ratio increasing,and the spray field was close to hollow.With the momentum ratio increasing,the minimum droplets diameter decreases,while the maximum droplets increases,and the distribution range of droplets diameter gradually widened.The distribution of liquid density and droplets diameter along the circumferential direction has obvious zoning characteristics of adjacent injection units.