Numerical and experimental analysis of spray atomization characteristics of a GDI injector

Sungwook Park, Hyung Jun Kim, Chang Sik Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, numerical and experimental analysis on the spray atomization characteristics of a GDI injector is performed. For numerical approach, four hybrid models that are composed of primary and secondary breakup model are considered. Concerning the primary breakup, a conical sheet disintegration model and LISA model are used. The secondary breakup models are made based on the DDB model and RT model. The global spray behavior is also visualized by the shadowgraph technique and local Sauter mean diameter and axial mean velocity are measured by using phase Doppler particle analyzer. Based on the comparison of numerical and experimental results, it is shown that good agreement is obtained in terms of spray developing process and spray tip penetration at the all hybrid models. However, the hybrid breakup models show different prediction of accuracy in the cases of local SMD and the spatial distribution of breakup.

Original languageEnglish
Pages (from-to)449-456
Number of pages8
JournalKSME International Journal
Volume17
Issue number3
DOIs
StatePublished - 2003 Jan 1

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Atomization
Surface mount technology
Disintegration
Spatial distribution

Keywords

  • Atomization
  • GDI (Gosoline Direct Injedion)
  • Hybrid Model

Cite this

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Numerical and experimental analysis of spray atomization characteristics of a GDI injector. / Park, Sungwook; Kim, Hyung Jun; Lee, Chang Sik.

In: KSME International Journal, Vol. 17, No. 3, 01.01.2003, p. 449-456.

Research output: Contribution to journalArticle

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