Kinetic and fluid dynamics modeling of methane/hydrogen jet flames in diluted coflow |
| |
| Authors: | Alessio Frassoldati Pratyush Sharma Alberto Cuoci Tiziano Faravelli Eliseo Ranzi |
| |
| Affiliation: | 1. Department of Aerospace Engineering, Sharif University of Technology, Azadi Str., P.O. Box 11365-11155, Tehran, Iran;2. Department of Aerospace Engineering, Amirkabir University of Technology, Hafez Str., Tehran, Iran;1. Institute of Thermal Engineering, Graz University of Technology, Inffeldgasse 25/B, A-8010 Graz, Austria;2. Messer Austria GmbH – Kompetenzzentrum Metallurgie, Industriestraße 5, A-2352 Gumpoldskirchen, Austria;1. Combustion Technology, Mechanical Engineering, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands;2. Faculty of Mathematics and Natural Sciences, Energy and Sustainability Research Institute, University of Groningen, 9747 AG Groningen, The Netherlands;1. School of Mechanical Engineering, K.N Toosi University, Tehran, Iran;2. Center of Excellence in Design and Optimization of Energy Systems (CEDOES), School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran;3. School of Aerospace Engineering, K.N Toosi University, Tehran, Iran;4. School of Mechanical and Aerospace Engineering, Politecnico di Torino University, Turin, Italy;1. CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD), Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, Anhui, PR China;2. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621000, Sichuan, PR China;3. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui, PR China;1. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;3. College of Engineering, Peking University, Beijing 100871, China;4. ENN Energy Research Institute, State Key Laboratory of Coal-Based Low Carbon Energy, Langfang 065001, China |
| |
| Abstract: | MILD combustion is a recent development in the combustion of hydrocarbon fuels which promises high efficiencies and low NOx emissions. In this paper we analyze the mathematical and numerical modeling of a Jet in Hot Coflow (JHC) burner, which is designed to emulate a moderate and intense low oxygen dilution (MILD) combustion regime 1]. This paper initially discusses the effects of several modeling strategies on the prediction of the JHC flame structure using the CFD code FLUENT 6.3.26. Effects of various turbulence models and their boundary conditions have been studied. Moreover, the detailed kinetic mechanism adopted in the CFD simulations is successfully validated in the conditions of interest using recent literature data 2] on the effect of nitrogen dilution on the flame speeds of several CH4/H2/air lean mixtures. One of the aims of this paper is also to describe a methodology for computing pollutant formation in steady turbulent flows to verify its applicability to the MILD combustion regime. CFD results are post-processed for calculating the NOx using a numerical tool called Kinetic Post Processor (KPP). The modeling results agree with the experimental results 1] and support the proposed approach as a useful tool for optimizing the design of new burners also in the MILD combustion regime. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
