The Partner section has it's own role to play in the OpenDA community. By presenting the parties that are now involved in OpenDA, it helps interested parties to find the services and support they need. If you are considering the use of OpenDA, but would like to have support from experienced users, you can contact one of the parties mentioned in the Partner section and see if they can help you out. An overview of the partners is given here. Please note that the Partner section is intended as a service only; the OpenDA association does not accept liability for the services that are provided by a partner. Nevertheless, a consistently bad performance is likely to lead to discussions and consequent steps in the OpenDA association to which every partner belongs.


Delft University of Technology

Applied Mathematics Department

Mathematical physics is concerned with mathematical modeling of physical phenomena. Most often this leads to a mathematical model in terms of (partial) differential equations. In fact, differential equations present the main theme in our group and we employ both analytical and numerical solution methods. Simulation using computer implementations of models with a practical significance have a large impact on our research. A close collaboration exists with external partners, such as Shell, TNO, Rijkswaterstaat. A rather unique feature of our group is that we often consider large scale systems in relation with large scale computer models and that we address the specific mathematical questions arising from this. We mention data assimilation (coupling of model and measurements), flexible numerical methods (numerics for real-life applications), high-performance computing (enlargement of scale), multiple scale analysis and asymptotics (model simplification), and stochastic differential equations (dealing with uncertainties).
The Mathematical Physics Department was one of the originators of OpenDA and was home to the development of the computational core. Research into new data-assimilation methods and practical applications of data-assimilation is done on the basis of the OpenDA framework.
OpenDA services: Fundamental and contract research in the field of data-assimilation
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Enabling Delta Life

Deltares is a Dutch independent research institute for water, soil and subsurface issues. We work on innovative solutions that make life in deltas, coastal areas and river basins safe, clean and sustainable. We conduct research and provide specialist advisory services for government authorities and the corporate sector in the Netherlands and globally. The essence of our work is the development, application and sharing of knowledge. We develop knowledge in partnerships with universities, other knowledge institutions and the business sector, not only in government research programmes but also in contract research. Deltares has more than 800 employees, and we are based in Delft and Utrec. Deltares has a rich experience in applying OpenDA for water management models, including calibration of wave models and Kalman filtering for operational storm surge models. Deltares is one of the originators of OpenDA.
OpenDA services: OpenDA projects in the field of water, soil and subsurface management.
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+31 (0)88 335 8273


VORtech is a combination of a software house and an engineering firm in applied mathematics. We combine a thorough knowledge of mathematical modeling, simulation techniques and computational algorithms with state-of-the-art software development methods. VORtech specialises in high performance computing, data-assimilation and model coupling. VORtech has been actively involved in the development of OpenDA and has done several major projects involving the application of OpenDA. Among these was the IMPOSE project (together with BMT-ARGOSS and KNMI), in which we have developed a system to monitor the air quality over the North sea, using satellite observations in combination with the Chimere atmospheric chemistry model.
OpenDA services: OpenDA courses, helpdesk, OpenDA development, consultancy
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Phone: +31(0)15-2850125


OpenDA services: OpenDA applications within water resources modelling
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Phone: +45 4516 9200 





The Netherlands eScience Center (NLeSC) is the national hub for the development and application of domain overarching software and methods for the scientific community. NLeSC develops crucial bridges between increasingly complex modern e-infrastructures and the growing demands and ambitions of scientists from across all disciplines. The application of digitally enhanced scientific practices, referred to as eScience, is a fundamental toolbox for all researchers. In support of this goal NLeSC funds and participates in multidisciplinary projects, with academia and industry, with optimized data-handling, efficient computing and big-data analytics at their core.

NLeSC is a joint initiative of the Dutch national research council (NWO) and the Dutch organisation for ICT in education and research (SURF).

NLeSC uses OpenDA as part of the eWaterCycle project and is an active contributor to OpenDA.

OpenDA services: -





The Organisation for Applied Physics (TNO) is an independent research institute in The Netherlands. Research studies are performed for governments and private sector in The Netherlands and abroad. Applications of these studies range from industrial production and energy to urbanization, human health, and defense. Simulations and observations take an important role in many of these applications.


As an example, the department of Climate, Air, and Sustainability uses a model to simulate and forecst air quality over Europe and other regions of the world. The mode simulations are continuously compared with observations from ground networks and satellites. The OpenDA software is used as framework to combine these simulations and observations in order to obtain the best possible air quality forecasts.

OpenDA services: Combination of simulations and observations in for example air quality and climate control.
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Phone: +31 88 866 08 66

DHI is an independent research and consultancy organisation. DHI's activities are based on the development and application of know-how and advanced technologies within water environments. The DHI group has offices in more than 30 counties worldwide with a total staff of about 1200, the majority of whom are professional engineers and scientists with post-graduate qualifications. Each year DHI invests more than 20% of its human resources in research and development to extend knowledge within water and environment and make it accessible through the MIKE Powered by DHI software tools.

DHI has extensive experience in development and application of data assimilation within environmental modelling and operational forecast systems. DHI is involved in the OpenDA development of coupling environmental models with OpenDA using the OpenMI interface.