Ammonia Combustion: Experimental and Numerical Studies

Dear Colleagues,

This Special Issue of Fire is dedicated to advancing the understanding of ammonia combustion, its applications in gas turbines and internal combustion engines, and the innovative techniques that enhance its performance. With a focus on sustainability and reduced emissions, this issue brings together a collection of research papers that provide comprehensive insights into the current state and future potential of ammonia as a clean fuel source.

The aim of this Special Issue is to encapsulate the multidisciplinary nature of ammonia combustion research, ranging from fundamental combustion characteristics to practical engine performance and emission profiles. It includes systematic literature reviews that assess the progress and challenges in ammonia-fueled engines and gas turbines, highlighting the benefits and limitations of using ammonia and hydrogen as fuels.

Technological advancements are explored through papers that discuss the application of machine learning for predicting NOx emissions in ammonia–hydrogen–air flames, offering a glimpse into the potential of artificial intelligence in combustion modeling. This issue also delves into the nuances of ammonia vaporization and cracking, utilizing exhaust gases from gas turbines, and structural analysis of laminar ammonia–hydrogen flames using advanced diagnostic techniques such as Planar Laser-Induced Fluorescence.

The scope extends to numerical studies that investigate the combustion process of ammonia sprays ignited by dimethyl ether jets, providing detailed insights into mixing, ignition, and combustion dynamics. Furthermore, this issue examines the spark ignition process of laminar premixed ammonia–hydrogen–air flames, crucial for optimizing engine performance and minimizing emissions.

Lastly, this Special Issue explores the ignition characteristics of a pre-chamber jet flame ignition system in a two-stroke ammonia engine, showcasing innovative approaches to enhance ammonia combustion efficiency.

In summary, this Special Issue serves as a platform for researchers and practitioners to share knowledge, discuss recent advancements, and explore new horizons in ammonia combustion science and technology, with the ultimate goal of promoting cleaner and more efficient energy solutions for a sustainable future.

Dr. Hao Shi
Dr. Mohammad Alnajideen
Dr. Guoqing Wang
Dr. Chunkan Yu
Dr. Dongsheng Dong
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• ammonia combustion
• ammonia–hydorgen combustion
• internal combustion engine
• gas turbine
• machine learning prediction
• NOx emissions reduction
• ammonia ignition enhancement