Numerical investigation of combustion process in gas fireplaces

燃气壁炉燃烧过程的数值研究

• 批准号: 509315-2017
• 负责人: Devaud, Cecile
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640014
• 关键词: Numerical; investigation; combustion; process; gas

Wolf Steel Limited, parent company of Napoleon, is looking to improve existing gas fireplaces and developnew products to meet the continuously increasing consumer market demand of efficient and clean heatingproducts with an aesthetical aspect. Current design methods rely on empirical knowledge developed over manyyears for some specific burners. However, no systematic methodology based on rigorous combustion researchhas been derived that would be valid for any kind of burners and fuels. In addition to the complex chemistryinvolved in the formation of atmospheric pollutants, the desired optimal operation of gas fireplaces stronglydepends on the burner design and amount of air available for burning.The objective of the proposed research is to investigate the complex relationships between the burner geometryand operation variables and their resulting impact on heating value, flame appearance and atmosphericemissions. The proposed investigation will be conducted using Computational Fluid Dynamics (CFD) thatprovides detailed information at small turnaround times with much lower costs compared to experimentalstudies. The final results will provide detailed information on the fluid flow within the combustion chamber, asfluid can eddy back and contaminate the air supply to the burner, causing poor combustion and flameappearance. Further, using the simulations, a map of optimal operating conditions for heat output, atmosphericpollutants (carbon monoxide (CO), carbon dioxide (CO2), soot and nitric oxides (NOx)), and luminous flamesbased on a rigorous approach will be generated.The proposed research will provide numerical results using CFD to improve the design and fundamentalunderstanding of combustion processes in the context of fireplaces. The proposed work will be key towardsproviding Wolf Steel Ltd and their customers further leading-edge simulation tools in a highly competitivemarket.

拿破仑的母公司沃尔夫钢铁有限公司正在寻求改善现有的燃气壁炉和开发新产品，以满足消费者市场对高效和清洁加热产品的不断增长的需求。目前的设计方法依赖于经验知识多年来发展的一些特定的燃烧器。然而，没有系统的方法，严格的燃烧研究的基础上已经得出，将是有效的任何类型的燃烧器和燃料。除了大气污染物形成过程中复杂的化学反应外，燃气壁炉的理想最佳运行还很大程度上取决于燃烧器的设计和可供燃烧的空气量。本研究的目的是调查燃烧器几何形状和运行变量之间的复杂关系，以及它们对热值、火焰外观和大气排放的影响。拟议的调查将使用计算流体动力学（CFD）进行，与实验研究相比，它可以在小的周转时间内提供详细的信息，并且成本低得多。最终结果将提供燃烧室内流体流动的详细信息，因为流体会产生涡流并污染燃烧器的空气供应，导致燃烧不良和火焰外观。此外，使用模拟，热输出，atmosphericpollutants（一氧化碳（CO），二氧化碳（CO2），烟尘和氮氧化物（NOx）），发光flamesbased上一个严格的approaches.The建议的研究将提供数值计算结果，以提高设计和fundamentalunderstanding燃烧过程中的壁炉的背景下，最佳的操作条件的地图。拟议的工作将是关键towardsproviding沃尔夫钢铁有限公司和他们的客户进一步领先的仿真工具在一个高度竞争的市场。