by University of Missouri, Mechanical and Aerospace Engineering and Engineering Mechanics Dept. in Rolla, Mo .
Written in English
|Other titles||Modelling of hydrogen air diffusion flame.|
|Series||NASA-CR -- 181357., NASA contractor report -- NASA CR-181357.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
Numerical Modeling of Laminar Diffusion Flame with Finite Rate Chemistry. of Hydrogen- Air Jet Diffusion Flame. The book concludes with special topics and possible applications of the method. Twenty-Seventh Symposium (International) on Combustion/The Combustion Institute, /pp. TWO-DIMENSIONAL DIRECT NUMERICAL SIMULATION OF OPPOSED-JET HYDROGEN-AIR DIFFUSION FLAME C. E. FROUZAKIS, J. LEE, A. G. TOMBOULIDES* and K. BOULOUCHOS Institute of Energy Technology/LVV Swiss Federal Institute of Technology Zurich, Switzerland Opposed-jet Cited by: The ignition time of hydrogen–air diffusion flames is a quantity of utmost interest in a large number of applications, with implications regarding the viability of supersonic combustion and the. Pitsch, H., Chen, M. and Peters, N. Unsteady flamelet modeling of turbulent hydrogen/air diffusion flames, submitted to the Twenty-seventh International Symposium on Combustion. Google Scholar Cited by: 1.
In the book from Peters and Rogg, it is proposed more than one reduced mechanism to the same fuel. According to them, the mechanisms of two-step are appropriate for premixed flames and diffusion flames of hydrogen-air. Diffusion flame structures can be conveniently represented employing the mixture fraction as the independent by: 1. The computation of hydrogen-air diffusion flames can be considerably simplified if one exploits the presence of the three-layer structure identified above. Solution of the convective-diffusive regions in the Burke-Schumann limit provides the basic flame structure. Integration of the . Hydrogen gas is highly diffusive and highly buoyant; it rapidly mixes with the ambient air upon release. The diffusion velocity is proportional to the diffusion coefficient and varies with temperature according to T n with n in the range of Diffusion in multi-component mixtures is usually described by the Stefan-Maxwell Size: 1MB. The combustion of hydrocarbon fuels produces large amounts of carbon dioxide. In order to cope with the challenge of greenhouse effect and global environmental protection. H2, as a cleaner and more energy-burning fuel, is being considered in many of the practical applications of combustion equipments. However, H2 fuel combustion will still produce pollutant : Yan Peng Wang, Pei Yong Wang.
31st Meeting on Combustion XII-4, 4 Dispersion of H 2 in air and comparison with the H 2/O 2 mixture The initial volume of gas surrounded with air contains only hydrogen. The H 2 mole fractions are reported in figure 3 for a hemisphere radius of m and diffusion times of 50, , File Size: KB. The diffusion flame model specification was taken similar to the model used in Fukutani et al.  for the study of axisymmetric hydrogen-air diffusion flame. In this study different inlet conditions were taken and detailed study was done Figure 4 shows the variation of mole fraction of different species at different velocities of fuel. The flamelet approach for non-premixed combustion is based on the description of the turbulent flame as a collection of laminar flame elements embedded in a turbulent flow and interacting with it. The local structure of the flame at each point of the flame front is supposed to be similar to a laminar flamelet, while the interaction with Cited by: 7. LARGE EDDY SIMULATION OF A SUPERSONIC HYDROGEN-AIR DIFFUSION FLAME A. Dauptain∗, B. Cuenot † CERFACS, 42 ave. G. Coriolis 31 Toulouse Cedex 1, France T.J. Poinsot IMFT, 1 Allee du Professeur Camille Soula 31 Toulouse, France´ Keywords: Large Eddy Simulations, Supersonic, Combustion Abstract.