20th OpenFOAM Workshop - Book of Abstracts

This Book of Abstracts compiles the submissions presented at the 20th OpenFOAM Workshop. Abstracts appear as provided by the authors, with only minimal formatting and organizational editing.

As chairman of the 20th OpenFOAM Workshop, I had the pleasure and honor of organizing the largest and longest-running OpenFOAM® conference, held in Vienna from June 30th to July 4th, 2025. This special anniversary edition marked two decades of a tradition that continues to bring together the global OpenFOAM® community. For the first time, the workshop took place in Austria—and fittingly, in its capital, Vienna—a city renowned for its cultural richness, creative energy, and its setting along the Danube, where history and innovation converge. Hosting the event here felt both timely and symbolic, highlighting Austria’s growing role in open-source computational fluid dynamics (CFD) and the collaborative ethos that has shaped the OpenFOAM® community over the years.

The Austrian Institute of Technology – AIT, as host of the 20th OpenFOAM Workshop, embodied this spirit remarkably well. As Austria’s largest non-university research organization, AIT’s mission blends scientific excellence with societal impact. By fostering open-source approach in research and technological development, AIT provided an ideal setting for a workshop dedicated to the world’s most widely adopted open-source CFD platform. Through this gathering, AIT proudly showcased not only its own advancements in simulation and modeling but also the breadth and vitality of Austrian research in fluid mechanics and its diverse applications.

This year’s program reflected that diversity: prominent professors from Austria’s top universities shared national expertise in multiphase, particulate, and laser-induced flow phenomena. Meanwhile, esteemed keynote speakers from institutions across Europe, America, and Asia enriched the global dialogue, offering perspectives on topics ranging from machine learning in fluid dynamics to the evolution of CFD in fields as varied as maritime engineering and biomedical flows. Collectively, these contributions underscored the field’s ongoing expansion—from fundamental physics to data-driven innovation.

The workshop welcomed over two hundred participants from academia and industry, promoting a truly international and interdisciplinary exchange of ideas. With technical sessions, poster presentations, and a dedicated high-performance computing session, the event highlighted how OpenFOAM® thrives at the intersection of community, computation, and creativity. Beyond the formal program, the workshop offered a valuable chance to reconnect in person, share experiences, and reflect on the remarkable progress of OpenFOAM® and the open-source movement through years of collaboration.

My sincere thanks go to all participants, contributors, sponsors, and volunteers who made this event possible. Organizing the 20th OpenFOAM Workshop has been a privilege and a rewarding opportunity to celebrate not only technical progress but also the strength of an international community united by curiosity, transparency, and shared purpose. The 20th OpenFOAM Workshop was the perfect opportunity to connect, learn, and celebrate the spirit of innovation together: as the conference chairman, on behalf of the OpenFOAM Workshop Committee, I thank you all for your contribution to this exciting event!

Mirza Popovac Conference Chairman