Search Results - "Kerstein, Alan"

A pressure-coupled Representative Interactive Linear Eddy Model (RILEM) for engine simulations by Doubiani, Nidal, Kerstein, Alan R., Oevermann, Michael

“…The Representative Linear Eddy Model (RILEM) was introduced by Lackmann et al. (2018) as an alternative modeling approach to simulate turbulent non-premixed…”
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A representative linear eddy model for simulating spray combustion in engines (RILEM) by Lackmann, Tim, Kerstein, Alan R., Oevermann, Michael

“…The design of new combustion concepts for low emission, high efficiency internal combustion engines often leads to combustion under low temperature conditions…”
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Reduced Numerical Modeling of Turbulent Flow with Fully Resolved Time Advancement. Part 1. Theory and Physical Interpretation by Kerstein, Alan R.

“…A multiscale modeling concept for numerical simulation of multiphysics turbulent flow utilizing map-based advection is described. The approach is outlined with…”
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A petascale direct numerical simulation study of the modelling of flame wrinkling for large-eddy simulations in intense turbulence by Hawkes, Evatt R., Chatakonda, Obulesu, Kolla, Hemanth, Kerstein, Alan R., Chen, Jacqueline H.

“…A new set of petascale direct numerical simulations (DNS) modelling lean hydrogen combustion with detailed chemistry in a temporally evolving slot-jet…”
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Simulation of shock–turbulence interaction in non-reactive flow and in turbulent deflagration and detonation regimes using one-dimensional turbulence by Jozefik, Zoltan, Kerstein, Alan R., Schmidt, Heiko

“…The one-dimensional turbulence (ODT) methodology is extended to include an efficient compressible implementation and a model for capturing shock-induced…”
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A super-grid approach for LES combustion closure using the Linear Eddy Model by Menon, Abhilash M., Oevermann, Michael, Kerstein, Alan R.

“…LES-LEM is a simulation approach for turbulent combustion in which the stochastic Linear Eddy Model (LEM) is used for sub-grid mixing and combustion closure in…”
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Log-Correlated Large-Deviation Statistics Governing Huygens Fronts in Turbulence by Mayo, Jackson R., Kerstein, Alan R.

“…Analyses have disagreed on whether the velocity u T of bulk advancement of a Huygens front in turbulence vanishes or remains finite in the limit of vanishing…”
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On the fractal characteristics of low Damköhler number flames by Chatakonda, Obulesu, Hawkes, Evatt R., Aspden, Andrew J., Kerstein, Alan R., Kolla, Hemanth, Chen, Jacqueline H.

“…Knowledge of the fractal properties of premixed flame surfaces can potentially be used to help develop turbulent combustion models. Here, direct numerical…”
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Hierarchical Parcel-Swapping Representation of Turbulent Mixing. Part 1. Formulation and Scaling Properties by Kerstein, Alan R.

“…An economical representation of effects of turbulence on the time-evolving structure of diffusive scalar fields is obtained by introducing a hierarchical…”
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One-dimensional turbulence modeling for cylindrical and spherical flows: model formulation and application by Lignell, David O., Lansinger, Victoria B., Medina, Juan, Klein, Marten, Kerstein, Alan R., Schmidt, Heiko, Fistler, Marco, Oevermann, Michael

“…The one-dimensional turbulence (ODT) model resolves a full range of time and length scales and is computationally efficient. ODT has been applied to a wide…”
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An Economical Model for Simulating Turbulence Enhancement of Droplet Collisions and Coalescence by Krueger, Steven K., Kerstein, Alan R.

“…ClusColl, an economical simulation method for droplet motions and collisions in turbulent flows, has been developed, implemented, tested, and applied. In the…”
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ODTLES: A multi-scale model for 3D turbulent flow based on one-dimensional turbulence modeling by Schmidt, Rodney C., Kerstein, Alan R., McDermott, Randall

“…A novel multi-scale approach for extending the one-dimensional turbulence (ODT) model of [A.R. Kerstein. One-dimensional turbulence: model formulation and…”
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An evaluation of the one-dimensional turbulence model: Comparison with direct numerical simulations of CO/H2 jets with extinction and reignition by Punati, Naveen, Sutherland, James C., Kerstein, Alan R., Hawkes, Evatt R., Chen, Jacqueline H.

“…A variant of the one-dimensional turbulence (ODT) model formulated in an Eulerian reference frame is applied to a planar nonpremixed turbulent jet flame and…”
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Three-dimensional Linear Eddy Modeling of a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-flow by Grøvdal, Fredrik, Sannan, Sigurd, Chen, Jyh-Yuan, Kerstein, Alan R., Løvås, Terese

“…A new methodology for modeling and simulation of reactive flows is reported in which a 3D formulation of the Linear Eddy Model (LEM3D) is used as a…”
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Stochastic Simulation of Scalar Mixing Capturing Unsteadiness and Small-scale Structure Based on Mean-flow Properties by Sannan, Sigurd, Weydahl, Torleif, Kerstein, Alan R.

“…A key limitation of Reynolds-Average Navier-Stokes (RANS) simulation of mixing and reaction in turbulent flows is the lack of resolution of small-scale…”
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Simulation of a Stably Stratified Atmospheric Boundary Layer Using One-Dimensional Turbulence by Kerstein, Alan R, Wunsch, Scott

“…One-dimensional turbulence (ODT) is a single-column simulation in which vertical motions are represented by an unsteady advective process, rather than their…”
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Simulation of Ethylene Wall Fires Using the Spatially-Evolving One-Dimensional Turbulence Model by Monson, Elizabeth I., Lignell, David O., Finney, Mark A., Werner, Chris, Jozefik, Zoltan, Kerstein, Alan R., Hintze, Ryan S.

“…The mechanism of flame propagation in fuel beds of wildland fires is important to understand in order to quantify fire spread rates. Fires spread by radiative…”
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Analysis and numerical simulation of a laboratory analog of radiatively induced cloud-top entrainment by Schmidt, Heiko, Kerstein, Alan R., Wunsch, Scott, Nédélec, Renaud, Sayler, Ben J.

“…Numerical simulations using the one-dimensional-turbulence (ODT) model are compared to water-tank measurements emulating convection and entrainment in…”
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Power-spectrum scaling of the dilatation field in thin-flame regimes of turbulent combustion by Kerstein, Alan R.

“…Dilatation is generally viewed as a cause of deviations from turbulence similarity scalings in turbulent combustion rather than as a process that is subject to…”
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‘One-dimensional turbulence’ simulation of turbulent jet diffusion flames: model formulation and illustrative applications by Echekki, Tarek, Kerstein, Alan R, Dreeben, Thomas D, Chen, Jyh-Yuan

“…A novel modeling approach to the simulation of turbulent jet diffusion flames based on the One-Dimensional Turbulence (ODT) model is presented. The approach is…”
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