Numerical analysis of reaction-diffusion effects on species mixing rates in turbulent premixed methane-air combustion [PDF]
, 2009 The scalar mixing time scale, a key quantity in many turbulent combustion models, is investigated for reactive scalars in premixed combustion. Direct numerical simulations (DNS) of three-dimensional, turbulent Bunsen flames with reduced methane-air ...
Grout, R.W. +7 more
core +1 more source
An algorithm for LES of premixed compressible flows using the Conditional Moment Closure model [PDF]
, 2011 A novel numerical method has been developed to couple a recent high order accurate fully compressible upwind method with the Conditional Moment Closure combustion model. The governing equations, turbulence modelling and numerical methods are presented
Bilger, R. W. +7 more
core +1 more source
Journal of Thermal Science and Technology, 2015 A new multi-dimensional flamelet generated manifolds(MFM) approach is proposed based on solving multi-dimensional flamelet equation set in mixture fraction Z and normalized flamelet progress variable c coordinate, to capture both non-premixed and ...
Yuxin WU +3 more
doaj +1 more source
Non-Premixed Filtered Tabulated Chemistry for LES: Evaluation on Sandia Flames D and E
Fuels, 2022 The non-premixed filtered tabulated chemistry for large eddy simulations employs numerical filtering to resolve a thin flame front on practical LES numerical grids. The flame structure is modified to be coherent with the domain discretization.
Pedro Javier Obando Vega +3 more
doaj +1 more source
An experimental study on coflow diffusion combustion in a pellet-packed bed with different bed lengths [PDF]
Royal Society Open Science, 2018 In experimental investigations on axial symmetry, over-ventilated CH4/air diffusion combustion in a packed bed is executed to study the height, shape and stability of the flame.
Junrui Shi +6 more
doaj +1 more source
LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]
, 2013 Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Hermeth, Sebastian +4 more
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The Influence of Bound Nitrogen Content in the Gaseous Fuel on the Formation of NOx
Chemical Engineering Transactions, 2014 This paper describes the experiences with the combustion of gaseous fuel that contains as one of the components the nitrogen of low concentration. Such gaseous fuel with the bound nitrogen is mostly used in the primary steam reformer furnaces.
P. Skryja, P. Belohradský, I. Hudák
doaj +1 more source
A Review of Non-Premixed Combustion Models: Study and Comparison
International Journal of Advanced Research in Science, Communication and Technology, 2022 The present work gives information about development in field of non-premixed combustion focusing on various models developed for non-premixed combustion. Key aspects of non-premixed combustion such as ignition, extinction and lift-off are first analysed and then summarised.
null Mohit Surwade +4 more
openaire +1 more source
Large Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame [PDF]
, 2012 This paper investigates one issue related to Large Eddy Simulations (LES) of self- excited combustion instabilities in gas-fueled swirled burners: the effects of incom- plete mixing between the gas injection and the combustion chamber.
Thierry Poinsot +7 more
core +1 more source
Entropy, 2023 This article focuses on entropy generation in the combustion field, which serves as a useful indicator to quantify the interaction between turbulence and combustion.
Jingke Su +4 more
doaj +1 more source