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- W748049252 abstract "․ Vigor Yang***ABSTRACT LES(Large eddy simulation) of breakup and droplet atomization of a liquid jet into cross turbulent flow was performed. Two phase flow of gas and liquid phases wer e modeled by the mixed numerical scheme of both Eulerian and Lagrangian methods for gas and liquid droplet respectively. The breakup process of a liquid column and droplets was observed by implementing the blob-KH wave breakup model. The penetration depth into cross flow was comparable wit h experimental data for several variants of the liquid-gas momentum flux ratio by varying liqui d injection velocity. SMD(Sauter Mean Diameter) distribution downstream of jet was analyzed.초 록 난류 유동장으로 분사되는 액체 제트의 액주 분열과 액적 미립화 현상에 관한 LES를 수행하였다. 기체상태의 공기 유동 해석에 Eulerian 해법을 사용하고, 액적 추적을 위하여 Lagrangian 해법을 사용하여 기체-액체간 이상유동(two phase flow) 해석을 수행하였다. 액적 분열 과정 모사에 blob-KH 분열 모델을 적용하여 액주와 액적의 분열이 관찰되었다. 일정한 공기 유동 조건에서 액체 분사 속도 변화를 통한 액체-기체 운동량 플럭스 비의 변화에 따른 액체 제트의 침투깊이를 조사하였으며 실험결과와 유사함을 알 수 있었다. 분사 제트의 분열에 따라 유동장에 존재하는 액적의 분포를 Sauter 평균 입경(SMD)의 분석을 통해 수행하였다.Key Words: Liquid Column Breakup(액주분열), Atomization(액적미립화), Two Phase Flow(이상유동), Large Eddy Simulation(대와동모사), Blob-KH Wave Breakup Model(blob-KH 분열 모델)Nomenclature 모액적 반경 (mm)" @default.
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- W748049252 date "2010-01-01" @default.
- W748049252 modified "2023-09-24" @default.
- W748049252 title "LES of Breakup and Atomization Characteristics of a Liquid Jet into Cross Turbulent Flow" @default.
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