scholarly journals Direct numerical simulation of flame stabilization downstream of a transverse fuel jet in cross-flow

2011 ◽  
Vol 33 (1) ◽  
pp. 1629-1637 ◽  
Author(s):  
R.W. Grout ◽  
A. Gruber ◽  
C.S. Yoo ◽  
J.H. Chen
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Cross Flow ◽  
Flame Stabilization ◽  
Jet In Cross Flow ◽  
Fuel Jet

Large Eddy Simulation of a Supercritical Fuel Jet in Cross Flow using GPU-Acceleration

2016 ◽  
Author(s):  
Kalyana C. Gottiparthi ◽  
Ramanan Sankaran ◽  
Anthony M. Ruiz ◽  
Guilhem Lacaze ◽  
Joseph C. Oefelein
Keyword(s):  
Large Eddy Simulation ◽  
Cross Flow ◽  
Gpu Acceleration ◽  
Eddy Simulation ◽  
Jet In Cross Flow ◽  
Fuel Jet ◽  
Large Eddy

Direct numerical simulation of jets in cross-flow

2006 ◽  
Vol 20 (5) ◽  
pp. 279-285 ◽  
Author(s):  
Y. Yao ◽  
D. Petty ◽  
P. Barrington ◽  
J. Yao ◽  
P. Mason
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Cross Flow

Direct Numerical Simulation Study of an Experimental Lifted H2/N2 Flame. Part 2: Flame Stabilization

2012 ◽  
Vol 26 (8) ◽  
pp. 4830-4839 ◽  
Author(s):  
Haiou Wang ◽  
Kun Luo ◽  
Fuxing Yi ◽  
Jianren Fan
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Simulation Study ◽  
Flame Stabilization

Mechanisms of flame stabilization and blowout in a reacting turbulent hydrogen jet in cross-flow

2012 ◽  
Vol 159 (8) ◽  
pp. 2755-2766 ◽  
Author(s):  
Hemanth Kolla ◽  
Ray W. Grout ◽  
Andrea Gruber ◽  
Jacqueline H. Chen
Keyword(s):  
Cross Flow ◽  
Flame Stabilization ◽  
Jet In Cross Flow

A direct numerical simulation study of turbulence and flame structure in transverse jets analysed in jet-trajectory based coordinates

2012 ◽  
Vol 706 ◽  
pp. 351-383 ◽  
Author(s):  
R. W. Grout ◽  
A. Gruber ◽  
H. Kolla ◽  
P.-T. Bremer ◽  
J. C. Bennett ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Flame Stabilization ◽  
Dirichlet Boundary Conditions ◽  
Spanwise Direction ◽  
Detailed Chemical Kinetics ◽  
Potential Core ◽  
Flow Mixing ◽  
Jet Trajectory ◽  
Jet Nozzle

AbstractAn${\mathrm{H} }_{2} / {\mathrm{N} }_{2} $jet in cross-flow (JICF) of air is studied using three-dimensional direct numerical simulation with and without chemical reaction in order to investigate the role of the complex JICF turbulent flow field in the mechanism of fast fuel-oxidant mixing and of aerodynamic flame stabilization in the near field of the jet nozzle. Focus is on delineating the flow/mixing/chemistry conditions that are necessary and/or sufficient to achieve flame anchoring that ultimately enables the formulation of more reliable and precise guidelines for design of fuel injection nozzles. A mixture averaged diffusion formulation that includes the effect of thermal diffusion is used along with a detailed chemical kinetics mechanism for hydrogen–air combustion. A new parametrization technique is used to describe the jet trajectory: solution of Laplace’s equation upon, and then within, an opportune scalar surface anchored by Dirichlet boundary conditions at the jet nozzle and plume exit from the domain provides a smoothly varying field along the jet path. The surface is selected to describe the scalar mixing and reaction associated with a transverse jet. The derived field,$j(\mathbi{x})$, is used as a condition to mark the position along the natural jet trajectory when analysing the variation of relevant flow, mixing and reaction quantities in the present direct numerical simulation (DNS) datasets. Results indicate the presence of a correlation between the flame base location in parameter space and a region of low velocity magnitude, high enstrophy, high mixing rate and high equivalence ratio (flame root region). Instantaneously, a variety of vortical structures, well known from the literature as important contributors to fuel-oxidant mixing, are observed in both inert and reactive cases with a considerable span in length scales. Moreover, instantaneous plots from reactive cases illustrate that the most upstream flame tongues propagate close to the trailing edge of the fuel jet potential core near the jet shear layer vortex shedding position. Some degree of asymmetry with respect to the domain mid-plane in the spanwise direction is observed in the averaged fields, both for the inert and reactive cases.

scholarly journals Direct numerical simulation of flame stabilization assisted by autoignition in a reheat gas turbine combustor

2019 ◽  
Vol 37 (2) ◽  
pp. 2635-2642 ◽  
Author(s):  
Konduri Aditya ◽  
Andrea Gruber ◽  
Chao Xu ◽  
Tianfeng Lu ◽  
Alex Krisman ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Gas Turbine ◽  
Flame Stabilization ◽  
Gas Turbine Combustor
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