On behalf of the Institute for Dynamics of Explosions and Reactive Systems (IDERS), I welcome you all to the 29th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS). This scientific meeting is the latest in a series of biannual colloquia held at various locations throughout the world since the first ICDERS in 1967, held in Brussels.

IDERS is indebted to the local hosts, the Korean Society of the Combustion Institute and Seoul National University, chaired by Prof. Jai-ick (Jack) Yoh. Jack and the team at ForceMonster have been busy over the past year planning a spectacular event which I am sure you will all enjoy. I hope that you will also find the time outside of the colloquium events to further explore what Korea has to offer.

I am eternally grateful to the efforts of the Program Committee, chaired by Prof. Scott Jackson. Scott and the Co-Chairs Jeong-Yeol Choi, Uwe Riedel, and Mustapha Fikri have assembled an excellent technical program which I think you will find both engaging and enlightening. Many thanks are also owed to all of the IDERS board members (present and past!) for their service toward the various committees and meetings which have helped make this Siheung 2023 ICDERS a reality.

Welcome to the 29th ICDERS.

On behalf of the Local Hosting Team, it is my great pleasure to invite you all to the 29th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS) held at the New Innovation Campus of Seoul National University in Siheung, Korea from July 23 to July 28, 2023.

This year's ICDERS is unique in several aspects. ICDERS has been held every two years since its founding in 1967. As the COVID-19 pandemic hit the globe in early 2020, for the first time in the ICDERS history, ICDERS 2023 is being organized within one year from its previous meeting in Napoli. In addition, ICDERS 2023 has received the highest number of paper submissions with more than 50% of the attendees are either students or young researchers in the field. This remarkable achievement underscores the enthusiasm and dedication of our team at large, eagerly providing a pleasant platform for connecting with the younger generations as well as the esteemed colleagues of IDERS, face-to-face.

We are honored to host this premier colloquium for the first time in Korea since our organizing the International Symposium on Combustion in 2016. We have planned an excursion to explore the heart of Seoul, the capital city of Korea, offering a chance to experience the cultural wonders of our vibrant and colorful country. We hope that you take full advantage of this opportunity to not only enhance your academic pursuits but also immerse yourself in the rich cultural heritage of Korea.

Once again, we extend a warm welcome to all participants and wish you a fruitful and memorable experience throughout the weeklong event. Welcome to the 29th ICDERS,

As the chair of the Local Organizing Committee of the ICDERS 2023, I welcome you all to the 29th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS 2023) hosted jointly by the Korean Society of Combustion Institute (KOSCO) and Seoul National University (SNU).

We welcome you to ICDERS-2023, the 29th specialist meeting on the dynamical aspects of explosions and reactive systems!

Submissions were invited across the areas of detonation, deflagration and reactive phenomena, for both fundamental and applied scientific contributions where there is a strong coupling between chemical reactions and fluid mechanics. Our program committee was chaired by four researchers spanning this technical scope and supported by 30 program committee members including: Eric Anderson, Marina Braun- Unkhoff, Ashwin Chinnayya, Carlos Chiquete, Gabriel Ciccarelli, Andrea Comandini, Jurgen Herzler, Kazuhiro Ishii, Tina Kasper, Michał Kawalec, Jiun-Ming Li, Ulrich Maas, Shinichi Maeda, Olivier Mathieu, Josue Melguizo- Gavilanes, Remy Mevel, Hisashi Nakamura, Damien Nativel, Clemens Naumann, Yasuyuki Sakai, Robert Schießl, Mark Short, Chae Hoon Sohn, Honghui Teng, Dominique Thevnin, Stephen Voelkel, Irenaeus Wlokas, Ming-Hsun Wu, Chun Sang Yoo and Bo Zhang.

Three plenary lectures were invited, speaking on topics of interest to the ICDERS community:

Venkat Raman, University of Michigan, USA: “Progress in the Computational Modeling and Understanding of Gaseous and Liquid-fueled Detonation Engines”

Nabiha Chaumeix, CNRS ICARE, France: “Role of the Chemical Kinetics on the Assessment of Explosions and Their Mitigation”

Kaoru Maruta, Tohoku University, Japan: “Combustion Fundamentals for Future Hyper Lean Burn Spark Ignition Engine Applications: Effects of Fuel Properties on Lean Ignition Limits and Knock Onset”

While ICDERS is typically a biennial meeting, ICDERS-2023 was held only one year after the previous meeting in an effort to return to our normal odd-year meeting schedule. Despite this short interval between meetings, 311 extended abstracts and over 41 work-in-progress (WIP) poster abstracts were submitted. Each extended abstract was peer reviewed by a member of the program committee. Authors were offered the opportunity to provide feedback to the review team, a revision, and their preferred mode of presentation (oral or poster). The revisions were then reviewed by the program chairs. Ultimately, we were able to accommodate the presentation preferences for every author that submitted author feedback. Three extended abstracts were rejected and five authors chose to change to WIP presentations. In the weeks before the meeting, several of our colleagues also notified us that they were unable to attend the meeting for various reasons.

Ultimately, this program contains 279 extended abstracts and 41 WIP poster abstracts as this message goes to press. Oral presentations are presented at the meeting in five parallel sessions. Extended-abstract poster presentations are presented during extended duration coffee breaks with no other parallel sessions.

Authors of papers presented at this meeting are also encouraged to submit full-length versions to the Shock Waves, Combustion Science and Technology, and Combustion Theory and Modelling journals. Submitted manuscripts will be peer reviewed according to individual journal standards but will be identified as ICDERS papers individually or as part of a special issue.

We sincerely express our gratitude to the members of the program committee for their enormous help in ensuring a high-quality program. We would also like to thank the local committee for help with the program planning and booklet. Note that all extended abstracts will be published on the internet as the Proceedings of the 29th ICDERS.