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A Study on the Disintegration and Spreading Behavior of Fuel-spray Emanating from a Liquid-thruster Injector by Pseudo-3D Spatial Distribution Measurement  

Kim, Jin-Seok (순천대학교 기계공학과 대학원)
Kim, Jeong-Soo (순천대학교 기계우주항공공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.5, 2008 , pp. 9-17 More about this Journal
Abstract
Pseudo-3D spatial distribution of spray droplets is investigated by using Dual-mode Phase Doppler Anemometry (DPDA) in order to examine the disintegration and spreading behavior of spray exiting from liquid-propellant thruster injector. Spray injected from nozzle orifice with length-to-diameter ratio ($L/d_o$) of 1.67 and under the injection pressure of 27.6 bar is aligned to the vertical. Vertical and horizontal mean velocities of droplets, Sauter Mean Diameter (SMD), and volumetric flux decrease as droplets travel from center/upstream toward outer region/downstream of spray. Although the distribution of spray characteristic parameters is symmetric against the geometric axis of nozzle orifice, their absolute values are asymmetric.
Keywords
Liquid-thruster; Injector; Dual-mode Phase Doppler Anemometry; Spray Disintegration; Spreading;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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