Users’ Meeting 2025: A hybrid event in Aachen.
Our 27th Users’ Meeting will take place from June 4 to 6, 2025 as a hybrid event in the heart of Aachen‘s old town. This format, first introduced at the 2024 Users’ Meeting “Sustainable materials processing”, will once again allow participants from all over the world to join either in person or online and benefit from knowledge sharing and community exchange:
On-site attendees will enjoy exclusive demos, interactive sessions, networking, and a social program.
Online attendees will benefit from hybrid streaming for an engaging experience.
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In memory of Abdulmonem Obaied
The 2025 Users’ Meeting will be dedicated to the memory of our colleague and friend Abdulmonem Obaied, who unexpectedly passed away this year. Abdulmonem was not only a brilliant scientist and valued team member, but also a warm person whose generosity and dedication touched everyone who knew him.
Please find the full tribute to Abdulmonem, honoring his life, work, and character, here.
WHAT TO EXPECT AT THE 2025 USERS’ MEETING
New venue: Forum M, Aachen
The 2025 meeting will take place at Forum M in the heart of Aachen. The venue is centrally located yet idyllically situated above the historic rooftops. It lies between the Elisenbrunnen, the cathedral and the town hall, with a beautiful view of the old town from the roof terrace and a unique networking atmosphere. The central location offers many hotels and accommodations within walking distance and excellent public transportation connections.
Hybrid experience: Join in-person or online!
We will be streaming the presentations from all sessions for online attendees. Building on the experience from our hybrid Users’ meeting last year, we are working to make this experience as smooth as possible.
As a result, online attendees can expect live-streamed talks and discussions as well as access to selected materials after the event.
Preliminary program with interactive sessions
The preliminary program of the 2025 Users’ Meeting combines technical sessions with demos with interactive elements and networking opportunities:
- June 4, Wednesday afternoon (14:00–18:00 CEST):
From theory to application: Let equilibrium work for you.
+ Interactive session*: FactSage - June 5, Thursday morning (from 9:00 CEST):
Beyond theory: How EERZ advances process modeling.
+ Interactive sessions*: FactFlow + FactProSim, ChemApp for Python - June 5, Thursday afternoon (until 17:00 CEST):
Predicting green transformation: Next-gen process models integrating heat, mass & reaction kinetics.
+ Interactive sessions*: KilnSimu, Rocket - June 6, Friday morning (9:00–12:00 CEST):
No data? No problem! Tackling missing thermochemical information.
+ Interactive session*: Calphad Optimizer
* There will be limited or no online streaming of the interactive sessions, depending on the format.
Preliminary speaker lineup
We are pleased to present the first confirmed speakers who will share their expertise and insights at the 2025 Users’ Meeting:
- Ahmed Mansy (TU Clausthal, Institut für Metallurgie)
How ChemApp for Python is used to simulate Me₂H₂: Storage and transport of H₂ using redox reactions - Alberto Rivera Romero (CENIM-CSIC)
Implementation of machine learning strategies to lower the computational cost of EERZ approaches in ChemApp for Python - Anna Smith (TU Delft)
Nuclear databases for salts: Modelling of SRO, density, viscosity - Ashok Kamaraj (Indian Institute of Technology Hyderabad)
Uncovering one of the last unknowns in the steel industry: Slag carryover through FactSage simulations - Ata Fallah (Vesuvius Ghlin)
Development of mold flux using thermodynamic modelling approach - Michiel Giels (KU Leuven)
Use of FactSage for the production of supplementary cementitious materials from slags and tailings - Ming Chen (Technical University of Denmark)
CALPHAD modelling of oxide materials for energy conversion and storage - Min-Kyu Paek (TU Clausthal)
Development of High-Mn Steel Database - Morgane Rochedy (CEA IRESNE)
Study of fission product speciation under nuclear reactor operating conditions - Naeimeh Vali (University of Borås)
Effects of Fe/Al on P compounds in municipal sewage sludge derived biochars and impacts of adding K compounds - Ondrej Benes (European comission ERC)
Database development on molten salt reactors (MSR) - Rhys Jacob (Forschungszentrum Jülich)
Overview of recent material characterisation results and database development at Forschungszentrum Jülich
Planned social program
In addition to the technical sessions, the Users’ Meeting will offer plenty of opportunities for informal exchange and networking. Throughout the event, you’ll be able to meet other users and the GTT-Technologies team in person, during sessions, breaks, and casual moments. One of the highlights: relaxed conversations on the rooftop terrace with its unique view over Aachen’s old town. We’re also planning a group dinner, likely on Thursday evening, to continue both technical discussions and informal exchange in a friendly atmosphere.
LAST CALL FOR SPEAKERS
We are finalizing the program for the 2025 Users’ Meeting. Do you have something new to share? We may still be able to offer a slot for an in-person presentation. Whether it’s a case study, a new application, or insights from your field, just email us your affiliation and a brief description of your contribution.
REGISTRATION DETAILS
Registration for the GTT-Technologies Users’ Meeting 2025 is now open! Join us June 4-6 in Aachen, Germany, or online for three days of user interaction, expert presentations, and insights into the latest developments in FactSage, ChemApp, and more.
This is a general registration. Attendance is free of charge.
Closer to the event, we will follow up with a second form. For those attending in person, this will include the opportunity to sign up for organized activities. Optional social events, such as the group dinner, will be offered at your own expense. Details will be provided at a later date.
We look forward to seeing you in person or online!
