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).

喷雾燃烧用于多种发电系统；也就是说，燃料以液体形式注入燃烧室，然后分解并雾化成液滴。液滴蒸发，形成的蒸气与氧化剂混合，从而可以发生火焰（即燃料燃烧）。液体破碎和雾化的过程决定了液滴形成的速率，而液滴汽化过程控制着燃烧/燃烧速率。 喷雾（两相流）燃烧现象已在文献中得到广泛研究；然而，人们对此仍知之甚少。这是由于这种现象的复杂性，受多种因素控制，例如燃料喷射器的几何参数、液体特性和环境条件（例如，流动特性、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和促进对这一现象的理解，这两个方面是相关的，但仍然可以单独研究； a) 液体破碎和雾化，以及 b) 燃料液滴的汽化和燃烧。 该项目的总体目标是寻找新数据，指导可持续解决方案的新方法，以减少污染物排放，同时最大限度地提高燃油效率。充分了解喷雾燃烧涉及的所有过程对于设计更清洁的动力燃烧系统至关重要。这将使加拿大处于该技术开发的前沿，这可能会导致加拿大能源利用/燃烧行业（例如汽车和航空航天以及工业燃烧器）的经济活动增加。