Detailed Modeling and Simulation of Thermodynamically Non-Ideal, Laminar and Turbulent Spray Combustion of Multicomponent Liquids

多组分液体的热力学非理想、层流和湍流喷雾燃烧的详细建模和模拟

• 批准号: 232079653
• 负责人: Professor Dr.-Ing. Bernd Rogg
• 金额: --
• 依托单位: Institut für Thermo- und Fluiddynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/232079653?language=en
• 关键词: Detailed; Modeling; Simulation; Thermodynamically; Non

The essential goals of the present research project are:(i) development of a general set of stochastic governing equations for spray combustion, building from the most basic physical physical principles for continuum flow, for multicomponent liquid fuels, for real (non-ideal) thermodynamic conditions, including detailed gasphase chemistry,and(ii) casting the theoretical formulation into a most efficient, 3-dimensional Monte-Carlo Computer code.No matter if the reactive spray-twophase flow is laminar are turbulent: the most general prossible, contintinuum mechanical governing equations that still can be numerically and computationally realized, are based on a stochastic formulation. Such a formulation is the focus of the proposed research, because it has the capability of providing a base for later, deeper going research activities. Since in the context of fluidmechanical applications of spray combustion the thermodynamics of real (non-ideal) mixture of liquids and gases is vastly scientifically unexplored, as are real molecular transport processes, it is planned to focus attention on these aspects of the formulation.A theoretical formulation of spray combustion as described above, and its respecive numerical realization, is predestined as a base for the investigation of pollutant formation (such as NOx, SOx, soot, etc), and hence needs to be capable to cope with detailed mechanisms of elementary reactions. The detailed investigation of pollutant formation in reactive spray two phase systems is not part of the proposed research, but still the theoretical and computational approach to be developed in this project should lay the foundation for later, profound research in the area of pollutant chemistry.For industrial purposes, where problems need to be solved with a minimum of time and computer resources, commercial computer codes are available that can also be used for the computation of sprays and spray flames. Due to the special target group of the commercial codes, these codes employ relatively simple physico-chemical models that -- with the exception of relatively simply benchmark applications -- cannot reasonably be used to seriously support high-quality, theoretical, fluidmechanically orientated, combustion research. Therefore, in the proposed research project, for the numerical realization of the mathematical model of spray combustion to be developed, development of a powerful, 3-dimesional Monte-Carlo method will be initialized.

本研究项目的基本目标是：（i）从连续流、多组分液体燃料、真实的、非线性和非线性的最基本的物理物理原理出发，建立喷雾燃烧的一组通用随机控制方程，（非理想）热力学条件，包括详细的气相化学，和（ii）将理论公式转换成最有效的三维蒙特-卡罗计算机代码。仍然可以数值地和计算地实现的最一般的可逼近的连续力学控制方程是基于随机公式。这样的提法是拟议研究的重点，因为它有能力为以后更深入的研究活动提供基础。由于在喷雾燃烧的流体力学应用的背景下，液体和气体的（非理想的）混合物在科学上是大量未开发的，真实的分子传输过程也是如此，计划将注意力集中在公式的这些方面。注定要作为研究污染物形成（如NOx、SOx、煤烟等）的基础，因此需要能够科普基元反应的详细机理。反应喷雾两相系统中污染物形成的详细研究不是拟议研究的一部分，但本项目中有待开发的理论和计算方法仍应为以后污染物化学领域的深入研究奠定基础。商业计算机代码也可用于计算喷雾和喷雾火焰。由于商业代码的特殊目标群体，这些代码采用相对简单的物理化学模型，除了相对简单的基准应用之外，这些模型不能合理地用于认真支持高质量的理论的流体机械导向的燃烧研究。因此，在所提出的研究项目中，为了开发喷雾燃烧数学模型的数值实现，将初始化开发强大的三维蒙特-卡罗方法。