Components, formulations, solutions, evaluation, and application of comprehensive combustion models
Components, formulations, solutions, evaluation, and application of comprehensive combustion models
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DOI：
10.1016/s0360-1285(99)00008-8
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发表时间：
1999-01-01
影响因子：
29.5
通讯作者：
Eatough, CN
中科院分区：
文献类型：
--
作者：
Eaton, AM;Smoot, LD;Eatough, CN
综合、多维、计算燃烧模型的开发和应用在世界范围内正以显著的速度增长。虽然这些燃烧模型曾经局限于专门的研究计算机代码，但它们正变得越来越容易作为商业计算流体动力学（CFD）计算机代码的特征而使用。用这些计算机代码进行的模拟为分析、设计、改造和优化化石燃料燃烧和转换系统的性能提供了巨大的潜力。本文的目的是提供一个全面的燃烧建模技术，应用于化石燃料燃烧过程的概述。本文主要分为三个部分。首先，简要回顾了综合燃烧模型所需的各种组件或子模型的最新技术。这些子模型体现了表征感兴趣的物理化学现象的基本原理的数学和数值表示。子模型审查仅限于描述非预混、气态和煤粉气化和燃烧过程所需的子模型。本文还对具有代表性的计算机代码中可用的子模型进行了总结。其次，考虑了评估和验证综合燃烧规范预测所需的各种数据。要有信心地看待，代码模拟必须经过严格的评估，并通过与适当的实验数据进行比较来验证，最好是来自各种几何尺度的各种燃烧器几何形状。详细讨论了三组验证数据。两套来自高度仪表化的中试规模燃烧器，称为受控型反应堆（CPR）（一套天然气和一套燃煤），另一套用于全尺寸，角燃85兆瓦的公用事业锅炉。第三，总结了综合燃烧模型的代表性应用，并将三组模型的模拟结果与实验数据进行了对比。使用PCGC-3和FLUENT 4.4两种常用的基于cfd的燃烧模型综合功能的计算机代码对三个测试用例进行模型模拟。除了标准版本的FLUENT之外，还使用了包含煤反应和NO污染物形成的先进子模型的FLUENT版本进行了预测。1999爱思唯尔科学有限公司版权所有。
Development and application of comprehensive, multidimensional, computational combustion models are increasing at a significant pace across the world. While once confined to specialized research computer codes, these combustion models are becoming more readily accessible as features in commercially available computational fluid dynamics (CFD) computer codes. Simulations made with such computer codes offer great potential for use in analyzing, designing, retrofitting, and optimizing the performance of fossil-fuel combustion and conversion systems.The purpose of this paper is to provide an overview of comprehensive combustion modeling technology as applied to fossil-fuel combustion processes. This overview is divided into three main parts. First, a brief review of the state-of-the-art of the various components or submodels that are required in a comprehensive combustion model is presented. These submodels embody mathematical and numerical representations of the fundamental principles that characterize the physico-chemical phenomena of interest. The submodel review is limited to those required for characterizing non-premixed, gaseous and pulverized coal gasification and combustion processes. A summary of the submodels that are available in representative computer codes is also presented.Second, the kinds of data required to evaluate and validate the predictions of comprehensive combustion codes are considered. To be viewed with confidence, code simulations must have been rigorously evaluated and validated by comparison with appropriate experimental data, preferably from a variety of combustor geometries at various geometric scales. Three sets of validation data are discussed in detail. Two sets are from the highly instrumented, pilot-scale combustor called the controlled profile reactor (CPR) (one natural gas-fired and one coal-fired), and the other set is for a full-scale, corner-fired 85 MW, utility boiler.Third, representative applications of comprehensive combustion models are summarized, and three sets of model simulations are compared with experimental data. The model simulations for the three test cases were made using two commonly used, CFD-based computer codes with comprehensive combustion model features, PCGC-3 and FLUENT 4.4. In addition to the standard version of FLUENT, predictions were also made with a version of FLUENT incorporating advanced submodels for coal reactions and NO pollutant formation. (C) 1999 Elsevier Science Ltd. All rights reserved.