급 확대부를 갖는 실린더 챔버 내부의 둔각물체 주위 유동에 관한 대 와동모사
Large Eddy Simulation of turbulent flow around a bluff body inside a sudden expansion cylindrical chamber
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Abstract
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.
참고문헌 (11)
- "Numerical simulation of turbulent pre-mixed flame around a bluff body using the k-ε and flamelet models 9th Symp. on Turbulent Shear Flows" (1993)
- "Large- eddy simulation of turbulent confined coannular jets", 315, pp.387~411 (1996)
- "Large eddy simulation of turbulent flow in the straight circular pipe using the composite grid system", pp.1994~
- "General calculation experiments with the primitive equations. I. The basic experiment", 91, pp.1963~
- "A Calculation precedure for turbulent flow in complex geometries", pp.251~273 (1987)
- "On turbulent flow near a wall", 23, pp.1956~
- "TOMCAT-A code for numerical generation of boundary fitted curvilinear coordinate system on fields containing any number of arbitary two dimensional bodies", 24, pp.1977~
- "LES에 의한 원관 내 난류의 유동 해석", 27(3), pp.437~446 (2003)
- "A stable and accurate convective modeling procedure based on quadratic upstream interpolation", 19, pp.1979~
- "Calculating three-dimensional flows around structures and over rough terrain", 10, pp.1972~
- "Large eddy simulation of plane turbulent jet using a new outlet velocity boundary condition", pp.242~253 (1994)