On Spray Combustion: Spray Formation and Droplet Gasification

喷雾燃烧：喷雾形成和液滴气化

• 批准号: 250002-2012
• 负责人: Birouk, Madjid
• 金额: $ 1.46万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=570784
• 关键词: Spray; Combustion; Formation; Droplet; Gasification

Spray combustion is employed in several power generation systems; that is, fuel is injected into a combustion chamber as a liquid, which then breaks up and atomizes into droplets. Droplets' evaporate and the formed vapor mixes with the oxidant, which then makes it possible for a flame (i.e., fuel burning) to take place. The process of liquid breakup and atomization dictates the rate of droplets formation, and the droplet vaporization process controls the burning/combustion rate. The phenomenon of spray (two-phase flow) combustion has been studied extensively in the literature; however, it is still poorly understood. This is owing to the complexity of this phenomenon which is controlled by a variety of factors, such as fuel injector's geometrical parameters, liquid properties, and ambient conditions (e.g., flow properties, pressure, temperature, combustion chamber geometry). The proposed research aims at studying and contributing to the understanding of this phenomenon by focusing on two very important aspects, which are related but still can be studied separately; a) liquid breakup and atomization, and b) vaporization and combustion of fuel droplets. The overall goal of this project is to find new data that will guide new approaches for sustainable solutions to reducing the emission of pollutants while maximizing fuel efficiency. A good understanding of all processes involved in spray combustion is essential for designing cleaner power combustion-based systems. This will position Canada at the forefront of the development of this technology, which may lead to an increase in Canada's economic activity in the energy utilization/combustion industries (e.g., automobile and aerospace, as well as industrial burners).

喷雾燃烧用于多个发电系统；也就是说，将燃料作为液体注入燃烧室，然后将其分解并雾化成液滴。液滴的蒸发，形成的蒸气与氧化剂混合，这使火焰（即燃料燃烧）可能成为可能。液体破裂和雾化过程决定了液滴形成的速率，而液滴汽化过程控制燃烧/燃烧速率。 在文献中已经广泛研究了喷雾现象（两相流）的现象。但是，它仍然知之甚少。这是由于这种现象的复杂性，该现象由多种因素控制，例如喷油器的几何参数，液体特性和环境条件（例如，流量特性，压力，温度，燃烧室几何形状）。 拟议的研究旨在通过关注两个非常重要的方面来研究并为对这一现象的理解做出贡献，这些方面与之相关，但仍可以单独研究。 a）液体破裂和雾化，b）燃油液滴的蒸发和燃烧。 该项目的总体目标是找到新数据，以指导可持续解决方案的新方法，以减少污染物的排放，同时最大程度地提高燃油效率。对喷雾燃烧涉及的所有过程的良好理解对于设计基于清洁的基于功率的系统至关重要。这将使加拿大在这项技术的发展中处于最前沿，这可能会导致加拿大在能源利用/燃烧行业（例如汽车和航空航天以及工业燃烧器）中的经济活动增加。