IAHR is going to livestream the keynotes of SimHydro 2025 on its LIVE platform for free.

SimHydro conferences, since 2010, have created a regular forum where major actors of the hydroinformatic domain and stakeholders meet, share and debate about needs, innovations and implementations of models and their inputs for decision making. The various sessions of SimHydro 2025, to be jointly organized by the Société Hydrotechnique de France (SHF), the Association Française de Mécanique (AFM) and IAHR with the support of Polytech Nice Sophia and Université Côte d’Azur in Nice, France during June 2-4, 2025, will cover these dimensions and will offer to the participants the possibility to share and exchange with scientists, practitioners and decision makers.

KEYNOTE 1: Possibilities and limitations of depth-averaged flow models

 Prof. Sandra SOARES-FRAZAO, UCL, Belgium
 Monday, 02 June 2025
 09:10 to 10:00 CEST | 15:00 to 16:00 Beijing
 www.iahr.org/en/lives/details?live_id=166

The shallow-water equations form the basis of most models applied for solving open-channel flow problems. This basic set of equations can be enhanced to account for sediment transport, mudflows or debris flows, or to include specific features such as porosity, turbulence, rainfall, ... In this lecture, we will travel through different modelling frameworks and discuss their adequacy for different physical flow situations. Ideally, the selection of the appropriate model should be based on a good knowledge of the flow physics obtained from field or laboratory observation to determine the best possible match between model assumptions and physical reality. This process will be illustrated through several examples that will allow us to highlight the wide range of possibilities of depth-averaged modelling frameworks, but also their limitations.

KEYNOTE 2: Advanced flood hazard and risk estimation: application to the Poyo wadi (Valencia, Spain)

 Prof. Félix Francés, Vice President of PTEA, Professor of Hydrology at UPV. Researcher at IIAMA, Spain
 Tuesday, 03 June 2025
 09:00 to 10:00 CEST | 15:00 to 16:00 Beijing
 www.iahr.org/en/lives/details?live_id=167

The floods of October 29, 2024, in Valencia (Spain) were a disaster of great magnitude. The extraordinary recorded precipitation reached 772 mm in a 24-hour period. But it was predicted some years earlier. The hazard assessment was conducted using a storm generator, a distributed hydrological model, and a 2D hydraulic model to better capture spatiotemporal variability compared to traditional methods. The peak flow from the 2024 event can be estimated to have a return period of 1,000 to 5,000 years. Finally, the risk estimation integrated specific vulnerability curves for each land use, revealing annual direct losses of 30 million euros.

KEYNOTE 3: Soon on holidays thanks to digital twins?

 Dr. Frédéric Jordan, Hydrique Ingénieurs, Switzerland
 Wednesday, 04 June 2025
 09:00 to 10:00 CEST | 15:00 to 16:00 Beijing
 www.iahr.org/en/lives/details?live_id=168

The theme of the keynote is a feedback on the services provided by digital twins applied to water infrastructures, as well as the conditions required for the successful development of such projects. Each proposition will be supported by examples issued from the practical experiences made by his team.

KEYNOTE 4: Teaching machines to understand water: Adapting AI to hydrosystem complexity

 Prof. Anne JOHANNET, IMT Mines Ales & UMR HYDROSCIENCE Montpellier, France
 Wednesday, 04 June 2025
 09:00 to 10:00 CEST | 15:00 to 16:00 Beijing
 www.iahr.org/en/lives/details?live_id=168

» For details about this conference, visit SimHydro2025