Journal of Advanced Marine Engineering and Technology

  • 제28권1호
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  • Pages.98-108
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  • 2004
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
권호 표지

급 확대부를 갖는 실린더 챔버 내부의 둔각물체 주위 유동에 관한 대 와동 모사

Large Eddy Simulation of turbulent flow around a bluff body inside a sudden expansion cylindrical chamber

  • 발행 : 2004.01.01
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초록

This study concerns a large eddy simulation (LES) of turbulent flow around a bluff body inside a sudden expansion cylindrical chamber, a configuration which resembles a premixed gas turbine combustor The simulation code is constructed by using the general coordinate system based on the physical contravariant velocity components. The Smagorinsky model is employed and the calculated Reynolds number is 5,000 based on the bulk velocity and the diameter of the inlet pipe. The combined grid technique and cylindrical grid are tested in the numerical simulation with complex geometry. The predicted turbulent statistics are evaluated by comparing with LDV measurement data. The numerical flow visualizations depict the behavior of turbulent mixing process behind the flame holder.

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참고문헌

  1. 9th Symp. on Turbulent Shear Flows Numerical simulation of turbulent pre-mixed flame around a bluff body using the k-ε and flamelet models Amano,K.;Inage,S.;Yamakata,M.;Taniguchi,M.
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  3. 日本機械學會 論文集 B v.60 no.580 ダンブディフュ-ザ形燃燒器に硏究 緖方秀樹;志澤高郎;本阿彌眞治
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