SimHydro 2019

5th International Conference
Which models for extreme situations and crisis management? 

About SimHydro 2019 : Modeling in fluid mechanics, hydraulics, and hydrology, whether using digital tools or using scale models, has reached sufficient maturity to be in daily use by engineers for analysis and for communication. Increasingly complex cases can be handled thanks to ever more sophisticated tools and increasingly abundant computing power. The emerging environment populated with new generation of sensors, using cloud-computing resources and advanced capacities of communication networks, is challenging the current practices of modelling and request innovation in methodology and concepts for a real integration into the decision-makings processes. 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.

Following the 4 past successful events in 2010, 2012, 2014 and 2017, the next SimHydro Conference will be held from 12th to 14th of June 2019 at Polytech Nice Sophia (School of Engineering) in Sophia Antipolis technopark, near Nice and Cannes - France (French Riviera).

For this new edition, the general theme of the conference will be focused on "Which models for extreme situations and crisis management?".

Hydraulics and related issues are frequently concerned with extreme situations that request to be understood accurately before to imitate actions and the definition of relevant mitigation measures. Under these particular situations, the models currently used could be partly irrelevant due to the new physical phenomena involved, the scale of the processes, the hypothesis included within the different numerical tools, etc. The design and the operation of relevant models represents a challenging task for the modeller who is responsible of the knowledge part of a global system that is dedicated to support the decision makers. Obviously the availability of computational resources and new capacities like GPU offer to the modeller the possibility to explore various approaches. At the same time, the crisis management itself becomes a topic that raised larger interest from many involved actors and who have to share a common understanding. The crisis phase request synthetic and relevant information that can be produced from hydroinfomatics tools. However, the design and integration of models in Decision Support Systems is an open subject that requests further developments and engagement of various communities including first responders. In such new context, methodologies, guidelines and standards are more and more requested in order to ensure higher efficiency and at the same time, sustainability of the developed systems.
The various sessions of SimHydro 2019 will cover these dimensions and will offer to the participants the possibility to share and exchange with scientists, practitioners and decision makers.

The conference is mainly targeting the European audience and endeavours to collect high value papers that will be published in scientific journals and in a specific book (Advances in Hydroinformatics) with Springer like for the 3 previous editions. Over the last 4 years, the published chapters have been downloaded more than 104 000 times.

The SimHydro 2019 conference is jointly organized by the Société Hydrotechnique de France (SHF), the University of Nice Sophia Antipolis (UNS), the Association Française de Mécanique (AFM), the Environmental & Water Resources Institute (EWRI) and the International Association for Hydro-Environment Engineering and Research (IAHR)

5th International Conference
Which models for extreme situations and crisis management? 

- Decision-making processes and uncertainties handling
- Purposes for extreme situations and crisis management: how to choose the right model for Decision Support Systems?
- Which are the main issues for extreme situations simulation
- How to improve crisis management with models and simulations? What are the uncertainties and how to address them? 

Main themes:
  • Hydro-environmental issues and extreme situations
  • Models for extreme situations
  • Uncertainties and data assimilation
  • Extreme in hydraulics: how to deal with?
  • Crisis management and models
  • Decision Support System and models: concepts, design, challenges, implementation and operation
  • Real time management and models
  • Hydraulic structures and networks: real time operation and crisis
  • Scale models in hydraulics and their place and complementarity in simulation concepts
  • Modelling methods and tools for floods management
  • 3D multiphase flows (experiments and modelling)
  • Hydraulic machineries

Special sessions

1. Catastrophe models: needs, concepts and operational implementation.  The purpose of catastrophe modelling is to help communities and companies anticipate the likelihood and severity of potential future catastrophes before they occur so that they can adequately prepare for their financial impact. Insurances and reinsurance companies at the worldwide scale currently develop these approaches. Catastrophe modelling combines the four components - hazard, inventory, vulnerability, and loss - to aid insurers in making their decisions on what type of protection they can offer against a particular risk. Integration of hydroinformatics methods and tools in these approaches is a real challenge that will be discussed trough examples from USA, Europe and Asia. The session will offer the possibility to various communities to exchanges on their practices and to explore further closer collaborations. 

2. Maths & hydroinformatics: emerging approaches. In the field of environmental hydraulics, there has been a notable increase in the use of numerical models for more and more complex problems in the last ten years. This was made possible, among other things, thanks to a strong collaboration between mathematicians and hydraulic practionners. We can notice as varied applications as modelling of complex of physical processes (sludge flow, debris flows etc), real-time flood forecasting, shape optimization etc. This symposium will focus on practical illustrations of the contribution and need for mathematical techniques in the field of hydro-environmental modelling.

3. Models for coastal areas management: Population and economic growths, climate change, exert increasing pressures on the coastal areas. Modelling tools can provide support for the analysis of many risk situations, such as coastal submersion and coastal erosion risks, wave damages on fixed and floating structures, pollution monitoring (oil drift, dispersion of pollutants, etc.), propagation of tsunami waves, etc. Models with different approaches are adapted to different contexts: hazard and risk appraisal, damage and resilience evaluation, crisis management including evacuation of populations and help web services. As in other domains, models addressing coastal risk situations are progressively improved to produce evaluation of uncertainties regarding input data and other constraints. This session will be an opportunity to discuss all these points including the robustness and flexibility of the models.

4. Physical models & numerical models: Physical models are often used today in conjunction with numerical models when designing or analyzing hydraulic structures or river stretches. For some extreme situations, it’s still necessary to use physical models. This is for example the case for flows with high solid transport, or when multiple and complex physical phenomena are involved. The evolution and development of sensors or measurement techniques also allow to improve the content and quality of results. The objective of this session is to illustrate, on the basis of specific projects, the advantages of these two types of modelling and their synergy. Highlight will be done especially on the benefit of the physical model / numerical model coupling.

5. Urban hydrogeology and stormwater management : Urban land-use changes the water balance drastically and urban groundwater is threatened by overexploitation and contamination from a multitude of sources. Urban groundwater has also become subject to geothermal use. Overexploitation may have critical consequences such as deep depletion, warming, pollution, and high salinization in coastal areas. Here, all contributions are encouraged on urban groundwater use and urban impacts on groundwater and its receiving waters. Among these questions, the session will focus on the interaction between groundwater and all systems of stormwater management. The quantity of recharge by a portion of net rainfall, through either direct infiltration from the ground surface or indirect leakage from the sewers and drainage network, has a considerable impact on the groundwater dynamics. This may be enhanced by intentionally recharging aquifers by rainwater. Treated wastewater disposal through groundwater recharge projects is a parallel problematic. In some cases, the aquifer is crucial as an element within the global concept of flood management. This is when an integrated hydraulic modelling tool is an asset for water resources management.

Preliminary schedule

Day 1, 12th of June

Free surface flows, coupled problems and hydro-environmental issues, extreme hydrological situations: droughts and floods, uncertainties.

Day 2, 13th of June

Real-time monitoring and modelling for hydraulic structures and networks, flood modelling, crisis management
Special session on catastrophe modelling

Day 3, 14th of June

3D flows modelling and two-phase flows in hydraulic machines and industrial hydraulics, extreme hydraulic conditions modelling, flood modelling, crisis management.

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