Large-Eddy Simulation of Supercritical Combustion: Model Validation Against Gaseous H2–O2 Injector
Hongfa Huo,Vigor Yang +1 more
TLDR
In this article, supercritical combustion has attracted significant interest due to its applications in high-pressure combustion devices, however, validation of super-critical combustion modeling has not been well studied.Abstract:
Supercritical combustion has attracted significant interest due to its applications in high-pressure combustion devices. Validation of supercritical combustion modeling, however, has not been well ...read more
Citations
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Journal Article
Large eddy simulation of a nonpremixed reacting jet: Application and assessment of subgrid-scale combustion models
TL;DR: In this paper, the results from large eddy simulations (LES) and direct numerical simulations (DNS) of a two-dimensional, spatially developing, compressible planar free jet undergoing an idealized, exothermic, chemical reaction of the type F+rOx→(1+r)P are presented in order to assess several subgrid-scale combustion models.
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Numerical analysis of turbulent flow dynamics and heat transport in a round jet at supercritical conditions
TL;DR: In this paper, a simulation of a round jet of cryogenic nitrogen, which mimics the experiment by Mayer et al. (2003) in terms of geometry, thermodynamics, and hydrodynamics, but at reduced Reynolds-number (Re ǫ = 5300 based on the injection diameter), is investigated.
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Nonadiabatic Flamelet Formulation for Predicting Wall Heat Transfer in Rocket Engines
TL;DR: In this article, a flamelet-based combustion model is proposed for the prediction of wall heat transfer in rocket engines and confined combustion systems to account for convective heat loss due to the interaction of the flamelet and the combustion medium.
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A systematic approach to high-fidelity modeling and efficient simulation of supercritical fluid mixing and combustion
TL;DR: In this paper, two closure models for the SGS term in the filtered equation of state (EOS) are proposed: a gradient-based and a mixing-based approach.
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Three-dimensional flow dynamics and mixing in a gas-centered liquid-swirl coaxial injector at supercritical pressure
TL;DR: In this article, a gas-centered liquid-swirl coaxial injector at supercritical pressure is numerically studied using the large-eddy-simulation technique, and the full three-dimensional flow evolution over the entire injector configuration, including axial and circumferential dynamics that are essential for small-scale mixing between GOX and kerosene, is discussed.
References
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Journal ArticleDOI
Two-equation eddy-viscosity turbulence models for engineering applications
TL;DR: In this paper, two new two-equation eddy-viscosity turbulence models are presented, which combine different elements of existing models that are considered superior to their alternatives.
Journal ArticleDOI
Generation of Turbulent Inflow Data for Spatially-Developing Boundary Layer Simulations
TL;DR: In this article, a method for generating three-dimensional, time-dependent turbulent inflow data for simulations of complex spatially developing boundary layers is described, which is essentially a variant of the Spalart method, optimized so that an existing inflow?outflow code can be converted to an inflow-generation device through the addition of one simple subroutine.
Journal ArticleDOI
Detached-Eddy Simulation
TL;DR: This review discusses compelling examples, noting the visual and quantitative success of DES and its principal weakness is its response to ambiguous grids, in which the wall-parallel grid spacing is of the order of the boundary-layer thickness.
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Wall-layer models for large-eddy simulations
Ugo Piomelli,Elias Balaras +1 more
TL;DR: In this article, the authors present three broad classes of approaches: bypassing this region altogether using wall functions, solving a separate set of equations in the nearwall region, weakly coupled to the outer flow, or simulating the near-wall region in a global, Reynolds-averaged, sense.
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