라그랑지안 조건평균방법을 이용한 난류비예혼합 연소의 LES 해석
Large Eddy Simulation of Turbulent Nonpremixed Combustion using Lagrangian Conditional Moment Closure
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초록
Lagrangian conditional moment closure(CMC) is applied to large eddy simulation(LES) to analyze turbulent piloted nonpremixed flame(Sandia flame D). It is assumed that the sequentially injected fuel groups share the conditional flame statistics. Coupling between turbulence and chemistry is considered in modeling of the conditional scalar dissipation rate(SDR) which is composed of resolved and subgrid scale modeled terms. Since no additional grid system is required for Lagrangian CMC, LES study is possible without large computation burden. The LES-Lagrangian CMC predicts the major scalar variables(temperature, mixture fraction, and mass fractions of CO, OH, H2) consistent with measurements both in physical and mixture fraction spaces.
Abstract
Lagrangian conditional moment closure(CMC) is applied to large eddy simulation(LES) to analyze turbulent piloted nonpremixed flame(Sandia flame D). It is assumed that the sequentially injected fuel groups share the conditional flame statistics. Coupling between turbulence and chemistry is considered in modeling of the conditional scalar dissipation rate(SDR) which is composed of resolved and subgrid scale modeled terms. Since no additional grid system is required for Lagrangian CMC, LES study is possible without large computation burden. The LES-Lagrangian CMC predicts the major scalar variables(temperature, mixture fraction, and mass fractions of CO, OH, H2) consistent with measurements both in physical and mixture fraction spaces.
참고문헌 (12)
- 정대로, "탈휘발 예측 코드를 활용한 탈휘발 및 촤반응 모델 평가", 한국연소학회지, 17(2), pp.32~39 (2012), 한국연소학회[DOI]
- K. Han, "First and Second Order Lagrangian Conditional Moment Closure Method in Turbulent Nonpremixed Flames", Proceedings of the Combustion Institute, 35, pp.1175~1182 (2015)
- T. Poinsot, "Prediction and Control of Combustion Instabilities in Real Engines", Proceedings of the Combustion Institute, 36, pp.1~28 (2017)
- H. Pitsch, "Large-Eddy Simulation of a Turbulent Piloted Methane", Air Diffusion Flame (Sandia flame D), 2000, pp.15, 2541~2553
- A. Triantafyllidis, "Implementation Issues of the Conditional Moment Closure Model in Large Eddy Simulations", Flow Turbul. Combust., 84, pp.481~512 (2010)
- 김남수, "MEPDF를 이용한 와류 연소실 내부 예혼합 화염의 대 와동 모사", 한국연소학회지, 22(3), pp.29~34 (2017), 한국연소학회[DOI]
- J. Xu, "PDF Calculations of Turbulent Nonpremixed Flames with Local Extinction", Combust. Flame, 123(3), pp.281~307 (2000)
- A.Y. Klimenko, "Conditional Moment Closure for Turbulent Combustion", Prog. Energy Combust. Sci., 25, pp.595~687 (1999)
- S. Ukai, "Large Eddy Simulation of Diluted Acetone Spray Flames using CMC Coupled with Tabulated Chemistry", Proceedings of the Combustion Institute, 35, pp.1667~1674 (2015)
- "Piloted CH4/Air Flames C, D, E, and F - Release 2.1"[URL]
- S.H. Kim, "Second-Order Conditional Moment Closure Modeling of Turbulent Piloted Jet Diffusion Flames", Combust. Flame, 138, pp.336~352 (2004)
- A. Kronenburg, "Modeling Extinction and Reignition in Turbulent Flames", Combust. Flame, 143, pp.342~356 (2005)