응축이 심플렉스 와류 노즐의 분무 특성에 미치는 영향Effect of Condensation on Spray Characteristics of Simplex Swirl Nozzle

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e effect of ambient gas (steam) condensation on swirl spray characteristics were studied experimentally for low subcooling condition of the liquid. The configuration of the liquid(water) sheet and the breakup modes were examined. Also variation of the discharge coefficient, breakup length, local and the cross-sectional area-averaged SMD of droplets with the liquid flow(injection) rate were obtained. The perforation breakup mode appears dominant with condensation while the aerodynamic wave breakup mode is dominant without condensation(in the air environment). The discharge coefficient, breakup length and the mean drop sizes decrease in a same manner with increasing of the liquid flow rate for both cases(with and without condensation). The condensation effects are insignificant with the discharge coefficient. However, the local and cross-sectional area-averaged SMD are larger and the breakup length becomes shorter in the steam environment. The spray angle predicted from the volumetric flux distribution along the radial direction of the sprays in the steam environment becomes larger with condensation.
Publisher
대한기계학회
Issue Date
2001-01
Language
KOR
Citation

대한기계학회 2001년 춘계학술대회, pp.107 - 112

URI
http://hdl.handle.net/10203/15635
Appears in Collection
ME-Conference Papers(학술회의논문)

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