Large-eddy simulations for internal combustion engines – a review
Reads0
Chats0
TLDR
A review of using large-eddy simulation (LES) in computational fluid dynamic stud- ies of internal combustion engines is presented in this paper, where the major modelling approaches for turbulence, combustion, scalars, and liquid sprays are discussed.Abstract:
A review of using large-eddy simulation (LES) in computational fluid dynamic stud- ies of internal combustion engines is presented. Background material on turbulence model- ling, LES approaches, specifically for engines, and the expectations of LES results are discussed. The major modelling approaches for turbulence, combustion, scalars, and liquid sprays are discussed. In each of these areas, a taxonomy is presented for the various types of models appropriate for engines. Advantages, disadvantages, and examples of use in the litera- ture are described for the various types of models. Several recent examples of engine studies using LES are discussed. Recommendations and future prospects are included.read more
Citations
More filters
Journal ArticleDOI
Scale-resolving Simulations for Combustion Process Development
TL;DR: In this article, the authors evaluated the current degree of utilization of the Large Eddy Simulation in the academic and industrial environment, and found that large eddy simulation is an established research approach while simulations based on Reynolds-Averaged Navier-Stokes equations are mostly used in industry.
Proceedings ArticleDOI
Partially Stratified Charge Natural Gas Combustion: The Impact of Uncertainties on LES Modeling
Journal ArticleDOI
Technologies and studies of gas exchange in two-stroke aviation piston engine: A review
Yu Zhou,Xueyu Li,Shuiting Ding,Shuai Zhao,Kun Zhu,Longtao Shao,Farong Du,Gerui Wang,Zheng Xu +8 more
TL;DR: In this article , the development history and characteristics of gas exchange types, as well as the current state of theory and the validation methods of Gas Exchange technology, while also discussing the trends of cutting-edge technologies in the field.
Journal ArticleDOI
Analysis of Averaging Methods for Large Eddy Simulations of Diesel Sprays
Integrated Analysis of the Scavenging Process in Marine Two-Stroke Diesel Engines
TL;DR: In this paper, the authors present a CFD model that is tested and validated with quantitative data obtained from a dedicated test engine and during engine commissioning on location at the shipbuilder.
References
More filters
Journal ArticleDOI
General circulation experiments with the primitive equations
TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
Journal ArticleDOI
A dynamic subgrid‐scale eddy viscosity model
TL;DR: In this article, a new eddy viscosity model is presented which alleviates many of the drawbacks of the existing subgrid-scale stress models, such as the inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes.
Journal ArticleDOI
A tensorial approach to computational continuum mechanics using object-oriented techniques
TL;DR: The implementation of various types of turbulence modeling in a FOAM computational-fluid-dynamics code is discussed, and calculations performed on a standard test case, that of flow around a square prism, are presented.
Journal ArticleDOI
A proposed modification of the Germano subgrid‐scale closure method
TL;DR: In this paper, the subgrid-scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses.