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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국항공우주학회 한국항공우주학회 학술발표회 초록집 한국항공우주학회 2008년도 춘계학술발표회 논문집
발행연도
2008.4
수록면
793 - 796 (4page)

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초록· 키워드

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LES analysis was conducted with in-house CFD code to investigate the turbulence evolution and interaction due to turbulence ring and splash plate in the gas generator. Though chemical reaction was not accounted for, the results can be useful in determining the turbulence characteristics generated by ring and plate. The calculation results show that the installation of turbulence ring can introduce additional turbulences and improve turbulent mixing in the downstream flow. However, the addition of splash plate in the downstream of TR brings totally different shape of perturbation energy and enstrophy distribution for turbulent mixing. This enhancement can be done by the formation of the intensively strong vorticity production and mixing behind the plate. Pressure drop was found to be a reasonable level of about I % or less of initial pressure in all calculation cases. Also, calculation results revealed that the variation of TR shape and intrusion length did not change the characteristics of turbulent mixing in the chamber. Even though the effect of installation location of splash plate on the turbulent mixing is not investigated yet, calculation results conclude the addition of splash plate leads to the increase in turbulent mixing with an acceptable pressure drop.

목차

Abstract
1. Introduction
2. Numerical Calculations
3. Results and Discussion
4. Summary and Conclusions
References

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