Large Eddy Simulation with tabulated chemistry of an experimental sidewall quenching burner

Heinrich, Arne; Ries, Florian; Kuenne, G.; Ganter, Sebastian; Hasse, Christian; Sadiki, A.; Janicka, J.

doi:10.1016/j.ijheatfluidflow.2018.03.011

Cited by 14 publications

(9 citation statements)

References 42 publications

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“…As mentioned before, the models used lead to good results compared to the experimental laminar and turbulent SWQ burner. This was shown before by Heinrich et al [16,17]. Within these references, the comparisons of the laminar and turbulent for the non-reacting and reacting configurations can be found.…”

Section: Comparison With Experimental Datamentioning

confidence: 54%

“…As pointed out by Heinrich et al [17], the quenching positions, heat fluxes and wall angles are widely distributed. In this work, it will be shown that most of these statistics depend on the way the flame tip moves.…”

Section: Description Of the Quenching Point Movementmentioning

confidence: 96%

“…Towards the wall, the mesh is refined to 90 µm. As discussed in [17] this grid leads to an direct numerical simulation (DNS)-like spatial resolution and no additional wall modeling is needed.…”

Section: Numerical Descriptionmentioning

confidence: 99%

“…The complete validation and verification of the simulation of the non-reacting turbulent inlet flow can be found in Heinrich et al [17]. Here, the basic idea will be pointed out.…”

Section: Numerical Domainmentioning

confidence: 99%

“…In the experimental setup, a premixed V-shaped flame interacts with a cooled wall under laminar and turbulent conditions. First numerical results for both cases have been already provided by Heinrich et al [16,17] with a highly-resolved (large eddy simulation) LES with DNS-like spatial resolution. The turbulent and laminar cases were compared and analyzed with each other and the experiments.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of the Turbulent Near Wall Flame Behavior for a Sidewall Quenching Burner by Means of a Large Eddy Simulation and Tabulated Chemistry

Heinrich

Kuenne

Ganter

et al. 2018

Fluids

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Combustion will play a major part in fulfilling the world’s energy demand in the next 20 years. Therefore, it is necessary to understand the fundamentals of the flame–wall interaction (FWI), which takes place in internal combustion engines or gas turbines. The FWI can increase heat losses, increase pollutant formations and lowers efficiencies. In this work, a Large Eddy Simulation combined with a tabulated chemistry approach is used to investigate the transient near wall behavior of a turbulent premixed stoichiometric methane flame. This sidewall quenching configuration is based on an experimental burner with non-homogeneous turbulence and an actively cooled wall. The burner was used in a previous study for validation purposes. The transient behavior of the movement of the flame tip is analyzed by categorizing it into three different scenarios: an upstream, a downstream and a jump-like upstream movement. The distributions of the wall heat flux, the quenching distance or the detachment of the maximum heat flux and the quenching point are strongly dependent on this movement. The highest heat fluxes appear mostly at the jump-like movement because the flame behaves locally like a head-on quenching flame.

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Section: Comparison With Experimental Datamentioning

confidence: 54%

Section: Description Of the Quenching Point Movementmentioning

confidence: 96%

Section: Numerical Descriptionmentioning

confidence: 99%

“…The complete validation and verification of the simulation of the non-reacting turbulent inlet flow can be found in Heinrich et al [17]. Here, the basic idea will be pointed out.…”

Section: Numerical Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of the Turbulent Near Wall Flame Behavior for a Sidewall Quenching Burner by Means of a Large Eddy Simulation and Tabulated Chemistry

Heinrich

Kuenne

Ganter

et al. 2018

Fluids

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Scalar Gradient and Strain Rate Statistics in Oblique Premixed Flame–Wall Interaction Within Turbulent Channel Flows

Ahmed

Chakraborty

Klein

2020

Flow Turbulence Combust

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Three-dimensional direct numerical simulations of V-flames interacting with chemically inert walls in a fully developed turbulent channel flow have been performed under adiabatic and isothermal wall boundary conditions using single-step chemistry. These simulations are representative of stoichiometric methane-air mixture at unity Lewis number under atmospheric conditions. The turbulence in the non-reacting channel is representative of the friction velocity based Reynolds number $$Re_{\tau }=110$$ R e τ = 110 . Differences in the statistical behaviours of the mean values of progress variable, temperature, and density have been reported for different wall boundary conditions. It is found that the mean location of the oblique flame interacting with the wall is affected by the choice of the wall boundary condition used. The influence of these differences on the flame dynamics is investigated by analysing the statistical behaviours of the surface density function (SDF) and the strain rates, which govern the evolution of the SDF. The mean variation of the SDF and the flame displacement speed are strongly affected by the wall boundary condition within the viscous sub-layer region of the boundary layer. The behaviours of the normal and tangential strain rates are found to be influenced by not only the differences in the wall boundary conditions, but also by the distance from the wall. The differences in the displacement speed statistics for different wall boundary conditions and wall distance affect the behaviours of the normal strain rate arising due to flame propagation and curvature stretch. The changes in the SDF behaviour in the near wall region have been explained in terms of the statistics of effective normal strain rate experienced by the progress variable iso-surfaces under different wall boundary conditions and wall normal distances.

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Numerical Study of Quenching Distances for Side-Wall Quenching Using Detailed Diffusion and Chemistry

Zirwes

Häber

Zhang

et al. 2020

Flow Turbulence Combust

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The numerical investigation of quenching distances in laminar flows is mainly concerned with two setups: head-on quenching (HOQ) and side-wall quenching (SWQ). While most of the numerical work has been conducted for HOQ with good agreement between simulation and experiment, far less analysis has been done for SWQ. Most of the SWQ simulations used simplified diffusion models or reduced chemistry and achieved reasonable agreement with experiments. However, it has been found that quenching distances for the SWQ setup differ from experimental results if detailed diffusion models and chemical reaction mechanisms are employed. Side-wall quenching is investigated numerically in this work with steady-state 2D and 3D simulations of an experimental flame setup. The simulations fully resolve the flame and employ detailed reaction mechanisms as well as molecular diffusion models. The goal is to provide data for the sensitivity of numerical quenching distances to different parameters. Quenching distances are determined based on different markers: chemiluminescent species, temperature and OH iso-surface. The quenching distances and heat fluxes at the cold wall from simulations and measurements agree well qualitatively. However, quenching distances from the simulations are lower than those from the experiments by a constant factor, which is the same for both methane and propane flames and also for a wide range of equivalence ratios and different markers. A systematic study of different influencing factors is performed: Changing the reaction mechanism in the simulation has little impact on the quenching distance, which has been tested with over 20 different reaction mechanisms. Detailed diffusion models like the mixture-averaged diffusion model and multi-component diffusion model with and without Soret effect yield the same quenching distances. By assuming a unity Lewis number, however, quenching distances increase significantly and have better agreement with measurements. This was validated by two different numerical codes (OpenFOAM and FASTEST) and also by 1D head-on quenching simulations (HOQ). Superimposing a fluctuation on the inlet velocity in the simulation also increases the quenching distance on average compared to the reference steady-state case. The inlet velocity profile, temperature boundary condition of the rod and radiation have a negligible effect. Finally, three dimensional simulations are necessary in order to obtain the correct velocity field in the SWQ computations. This however has only a negligible effect on quenching distances.

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Large Eddy Simulation with tabulated chemistry of an experimental sidewall quenching burner

Cited by 14 publications

References 42 publications

Investigation of the Turbulent Near Wall Flame Behavior for a Sidewall Quenching Burner by Means of a Large Eddy Simulation and Tabulated Chemistry

Investigation of the Turbulent Near Wall Flame Behavior for a Sidewall Quenching Burner by Means of a Large Eddy Simulation and Tabulated Chemistry

Scalar Gradient and Strain Rate Statistics in Oblique Premixed Flame–Wall Interaction Within Turbulent Channel Flows

Numerical Study of Quenching Distances for Side-Wall Quenching Using Detailed Diffusion and Chemistry

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