scholarly journals Numerical framework for transcritical real-fluid reacting flow simulations using the flamelet progress variable approach

2017 ◽  
Author(s):  
Peter C. Ma ◽  
Daniel Banuti ◽  
Jean-Pierre Hickey ◽  
Matthias Ihme
Keyword(s):  
Reacting Flow ◽  
Flow Simulations ◽  
Progress Variable ◽  
Real Fluid ◽  
Variable Approach

A step towards 'shape-shifting' algorithms - Reacting flow simulations using generalized grids

2001 ◽  
Author(s):  
Edward Luke ◽  
Xiao-Ling Tong ◽  
Junxiao Wu ◽  
Lin Tang ◽  
Pasquale Cinnella
Keyword(s):  
Reacting Flow ◽  
Flow Simulations

Large eddy simulation with flamelet progress variable approach combined with artificial neural network acceleration

2021 ◽  
Author(s):  
Lorenzo Angelilli ◽  
Pietro Paolo Ciottoli ◽  
Riccardo Malpica Galassi ◽  
Francisco E. Hernandez Perez ◽  
Mattia Soldan ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Large Eddy Simulation ◽  
Progress Variable ◽  
Eddy Simulation ◽  
Variable Approach ◽  
Large Eddy ◽  
Artificial Neural

Numerical Studies on Trapped-Vortex Concepts for Stable Combustion

1998 ◽  
Vol 120 (1) ◽  
pp. 60-68 ◽  
Author(s):  
V. R. Katta ◽  
W. M. Roquemore
Keyword(s):  
Drag Coefficient ◽  
Reacting Flow ◽  
Flow Conditions ◽  
Third Order ◽  
Cold Flow ◽  
Flow Simulations ◽  
Numerical Studies ◽  
Dynamic Flows ◽  
Experimental Findings ◽  
Trapped Vortex

Spatially locked vortices in the cavities of a combustor aid in stabilizing the flames. On the other hand, these stationary vortices also restrict the entrainment of the main air into the cavity. For obtaining good performance characteristics in a trapped-vortex combustor, a sufficient amount of fuel and air must be injected directly into the cavity. This paper describes a numerical investigation performed to understand better the entrainment and residence-time characteristics of cavity flows for different cavity and spindle sizes. A third-order-accurate time-dependent Computational Fluid Dynamics with Chemistry (CFDC) code was used for simulating the dynamic flows associated with forebody-spindle-disk geometry. It was found from the nonreacting flow simulations that the drag coefficient decreases with cavity length and that an optimum size exists for achieving a minimum value. These observations support the earlier experimental findings of Little and Whipkey (1979). At the optimum disk location, the vortices inside the cavity and behind the disk are spatially locked. It was also found that for cavity sizes slightly larger than the optimum, even though the vortices are spatially locked, the drag coefficient increases significantly. Entrainment of the main flow was observed to be greater into the smaller-than-optimum cavities. The reacting-flow calculations indicate that the dynamic vortices developed inside the cavity with the injection of fuel and air do not shed, even though the cavity size was determined based on cold-flow conditions.

scholarly journals An SMLD Joint PDF Model for Turbulent Non-Premixed Combustion Using the Flamelet Progress-Variable Approach

2015 ◽  
Vol 95 (1) ◽  
pp. 97-119 ◽  
Author(s):  
Alessandro Coclite ◽  
Giuseppe Pascazio ◽  
Pietro De Palma ◽  
Luigi Cutrone ◽  
Matthias Ihme
Keyword(s):  
Premixed Combustion ◽  
Progress Variable ◽  
Variable Approach ◽  
Pdf Model

scholarly journals Unsteady flamelet/progress variable approach for non-premixed turbulent lifted flames

2010 ◽  
Vol 4 (3) ◽  
pp. 465-474 ◽  
Author(s):  
S. K. Sadasivuni ◽  
W. Malalasekera ◽  
S. S. Ibrahim
Keyword(s):  
Progress Variable ◽  
Variable Approach ◽  
Lifted Flames

Large-Eddy Simulation of Reacting Turbulent Flows in Complex Geometries

2005 ◽  
Vol 73 (3) ◽  
pp. 374-381 ◽  
Author(s):  
K. Mahesh ◽  
G. Constantinescu ◽  
S. Apte ◽  
G. Iaccarino ◽  
F. Ham ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Gas Turbine ◽  
Turbulent Flows ◽  
Reacting Flows ◽  
Gas Turbine Combustor ◽  
Turbine Engine ◽  
Progress Variable ◽  
Eddy Simulation ◽  
Variable Approach ◽  
Large Eddy

Large-eddy simulation (LES) has traditionally been restricted to fairly simple geometries. This paper discusses LES of reacting flows in geometries as complex as commercial gas turbine engine combustors. The incompressible algorithm developed by Mahesh et al. (J. Comput. Phys., 2004, 197, 215–240) is extended to the zero Mach number equations with heat release. Chemical reactions are modeled using the flamelet/progress variable approach of Pierce and Moin (J. Fluid Mech., 2004, 504, 73–97). The simulations are validated against experiment for methane-air combustion in a coaxial geometry, and jet-A surrogate/air combustion in a gas-turbine combustor geometry.

Evaluation of real-fluid flamelet/progress variable model for laminar hydrothermal flames

2019 ◽  
Vol 143 ◽  
pp. 232-241 ◽  
Author(s):  
Zhengwei Gao ◽  
Haiou Wang ◽  
Kun Luo ◽  
Changcheng Song ◽  
Chunguang Zhao ◽  
...  
Keyword(s):  
Variable Model ◽  
Progress Variable ◽  
Real Fluid
Sign in / Sign up

Export Citation Format

Share Document