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American Institute of Aeronautics and Astronautics

    Course Overview

    Liquid Atomization, Spray, and Fuel Injection in Aircraft Gas Turbine Engines


    Atomization of liquids is at the heart of operations of many of the devices we use on a daily basis. From our shower in the morning (water atomization at the shower head), to liquid-fueled engines in ground transportation (gasoline and diesel engines), to gas turbine in airplanes/power stations and rocket engines. Other areas such as electrostatic car-body spray painting, agricultural crop spraying, ink jet printing, pharmaceutical nebulizers, spray drying, and chemical liquid rockets, are just a few examples of the very wide applications of the liquid spray production technology.

    In the aerospace industry, the engine thrust, efficiency, and the emission levels are directly related to the performance of the liquid fuel injector designs. For this reason, R&D activities in this area have intensified in the past two decades in a quest to design and operate efficient and low-emission gas turbine engines. It is imperative then individuals involved in research, design, and operation have the requisite knowledge and training to choose intelligent and innovative approaches when it comes to liquid fuel nozzle and its optimum performance.

    This seminar is about understanding the processes of liquid atomization and spray formation and relating this understanding to fuel injection systems and emission of pollutants in modern engines. The approach in this course is to build sufficient background through introduction of a consistent and widely-used terminology in sprays and atomization. Justifications, reasons, and purposes of the liquid atomization and spray formation are discussed along with presentation of different designs of atomizers and nozzles employed in various industries. Characterization methods of sprays are discussed after the definition and meaning of different averaged liquid droplet diameters are touched. Droplet size measurement devices are covered and examples are shown. Armed with these critical background information, the focus of the course is then heavily directed to gas turbine fuel nozzle designs and their performance requirements for optimum engine operation with lowest possible emission of harmful pollutants.

    Key Topics:

    • Understand and be familiarized with important terminology commonly used in atomization and sprays
    • Gain a general physical understanding of the important processes in atomization and spray formation
    • Possess adequate background and foundation to educate yourself beyond the depth and topics covered
    • Be able to intelligently judge, adapt, and, transfer technological advances from one discipline to the other
    • Understand effects of fuel nozzle design and operating conditions on engine performance, combustion and emission of pollutants
    • Be able to communicate intelligently with engineers working on fuel nozzle and fuel system design aspects in your company
    • Grasp the technology and the logic behind different injector designs
    • Gain sufficient knowledge to intelligently contribute to human being's efforts in minimizing emission of pollutants and maximizing efficient usage of earth's energy resources
    • Anticipate future trends and technology developments in fuel nozzles
    • Learn and appreciate the role the fuel nozzles play in combustion and emission and how it is used to provide guidance in design of low-emission combustion systems
    • Effectively contribute to the design of the critical engine components affected by the fuel nozzle performance

    Who Should Attend:

    This seminar will be especially valuable for engineers, technical and project managers, researchers, and academicians in the aerospace industries. In the aviation industry, engineers working on the design of components for high efficiency and performance of combustion engines, particularly those directly and indirectly involved in reducing emission of harmful pollutants from combustion engines, will highly benefit from this course. Additionally, this course provides adequate background for engineers and managers in contact with those directly involved in the fuel nozzle systems. Therefore, this experience prepares the attendees for a more efficient and intelligent communication in an interdisciplinary technological environment. The course is also of interest to academicians wishing exposure to the field and those engineers active in development and applications of software, modeling in-cylinder injection combustion and emission processes.

    General Course Information:

    • Type of Course: Instructor-Led Short Course
    • Course Level: Intermediate
    • Course Length: 2 days
    • AIAA CEU's available: yes