Modelling non-adiabatic partially premixed flames using flame-prolongation of ILDM
Modelling non-adiabatic partially premixed flames using flame-prolongation of ILDM
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DOI：
10.1088/1364-7830/7/3/301
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发表时间：
2003-09-01
影响因子：
1.3
通讯作者：
Darabiha, N
中科院分区：
文献类型：
--
作者：
Fiorina, B;Baron, R;Darabiha, N
现在有许多模型可以用低CPU成本来描述化学反应，但只有少数模型可以用来描述正确的预混、部分预混和扩散燃烧。其中之一是使用两个坐标的FPI模型：混合分数Z和进度变量c。在本文中，我们介绍了一个新的演变的FPI方法，现在可以处理热损失。在简要回顾湍流燃烧动力学模型后，介绍了新的三维FPI方法的主要特点，在该方法中，我们引入了第三个坐标的焓h。首先，一维辐射预混火焰验证的情况下，提出了一个大范围的辐射热损失。其次，我们提出了两个层流燃烧器的模拟结果。完全和部分预混燃烧器模拟给出了所有火焰特征的良好估计，例如火焰稳定性（由热损失驱动）、火焰结构和主要和次要物种的轮廓。
Many models are now available to describe chemistry at a low CPU cost, but only a few of them can be used to describe correctly premixed, partially premixed and diffusion combustion. One of them is the FPI model that uses two coordinates: the mixture fraction Z and the progress variable c. In this paper, we introduce a new evolution of the FPI method that can now handle heat losses. After a short review of kinetic models used in turbulent combustion, the main features of the new three-dimensional FPI method, in which we introduce a third coordinate for enthalpy h, are presented. First, a one-dimensional radiative premixed flame validation case is presented for a large range of radiative heat losses. Second, we present the results of simulations of two laminar burners. Both the fully and the partially premixed burner simulations give a good estimation of all the flame features such as the flame stabilization (driven by heat losses), the flame structure and the profile of major and minor species.