Modelling n-dodecane spray and combustion with the transported probability density function method
نویسندگان
چکیده
منابع مشابه
Eulerian transported probability density function sub-filter model for large-eddy simulations of turbulent combustion
Reactive flow simulations using large-eddy simulations (LES) require modelling of sub-filter fluctuations. Although conserved scalars like mixture fraction can be represented using a beta-function, the reactive scalar probability density function (PDF) does not follow an universal shape. A one-point one-time joint composition PDF transport equation can be used to describe the evolution of the s...
متن کاملAnalysis of Multiple Scalar Large-Eddy Simulation/Probability Density Function Formulation for Turbulent Spray Combustion
A large eddy simulation (LES)/probability density function (PDF) method is proposed for modeling turbulent spray combustion. The PDF method has the advantage that the chemical source term appears closed but requires models for the small scale mixing process. The transport equation for the joint-scalar PDF is high dimensional and solved using a Lagrangian technique. A stable and consistent numer...
متن کاملLES of n-Dodecane Spray Combustion Using a Multiple Representative Interactive Flamelets Model
A single-hole n-dodecane spray flame is studied in a Large-Eddy Simulation (LES) framework under Diesel-relevant conditions using a Multiple Representative Interactive Flamelets (MRIF) combustion model. Diesel spray combustion is strongly affected by the mixture formation process, which is dominated by several physical processes such as the flow within the injector, break-up of the liquid fuel ...
متن کاملMulti-Environment Probability Density Function Method for Modeling Turbulent Combustion Using Detailed Chemistry
One of the most important issues to address in turbulent combustion calculations is the intense nonlinear interaction between fluid mixing and finite-rate chemistry. In combustion processes which are characterized by fast chemistry, use of the flamelet model (Peter, 1984) or conditional moment closure (CMC) (Bilger, 1993) based on a conserved scalar is known to be quite accurate in making quali...
متن کاملProbability density function method for Langevin equations with colored noise.
Understanding the mesoscopic behavior of dynamical systems described by Langevin equations with colored noise is a fundamental challenge in a variety of fields. We propose a new approach to derive closed-form equations for joint and marginal probability density functions of state variables. This approach is based on a so-called large-eddy-diffusivity closure and can be used to model a wide clas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Combustion and Flame
سال: 2015
ISSN: 0010-2180
DOI: 10.1016/j.combustflame.2014.12.019