Sub-model to describe auto-ignition and combustion

描述自燃和燃烧的子模型

• 批准号: 129618955
• 负责人: Professor Dr. Ulrich Maas
• 金额: --
• 依托单位: Institut für Technische Thermodynamik (ITT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/129618955?language=en
• 关键词: Sub; model; describe; auto; ignition

In 'Sub-model to describe auto-ignition and combustion' a reduced model is developed to describe auto-ignition and combustion for the simulation of internal combustion processes. An over-all model is to develop from several models that describe the single phenomena (auto-ignition, 'hot' combustion) that are available from preliminary researches. The interaction between the single phenomena auto-ignition and flame propagation is also described by this model in a realistic way. The over-all model provides the chemical source-terms in a tabulated manner for a wide range of thermodynamic states and mixture conditions (ideal premixed, different levels of stratification), dependent on progress variable and additional quantities (e.g. pressure, enthalpy, air ratios, exhaust concentrations, intensity and direction of dissipation, and fluctuations). After validation of the over-all model due to comparison with detailed simulations it can be coupled with a LES code and used for simulations of internal combustion processes.

在“自燃燃烧子模型”中，建立了一个简化的自燃燃烧模型，用于内燃机燃烧过程的模拟。一个全面的模型是从几个模型，描述单一的现象（自燃，“热”燃烧），可从初步研究。该模型还真实地描述了自燃与火焰传播之间的相互作用。总体模型以列表的方式提供了各种热力学状态和混合物条件（理想预混、不同层次的分层）的化学源项，取决于进展变量和附加量（例如压力、焓、空气比、排气浓度、耗散强度和方向以及波动）。在与详细的模拟进行比较后，验证了整个模型，它可以与LES代码耦合，并用于模拟内燃过程。