TY - CHAP A1 - Simons, Franz A1 - Busse, T. A1 - Hou, J. A1 - Notay, Kunwar Vikramjeet A1 - Hinkelmann, R. T1 - A Robust and Efficient Solver for the Shallow Water Equations and its Application to a Complex Natural Hydrosystem T2 - Balance and uncertainty - water in a changing world, proceedings of the 34th IAHR world congress, 33rd Hydrology and Water Resources Symposium, 10th Conference on Hydraulics in Water Engineering, 26 June - 1 July 2011, Brisbane, Australia Y1 - 2011 SN - 978-0-85825-868-6 SP - 4276 EP - 4283 PB - Engineers Australia CY - Barton, A.C.T. ER - TY - CHAP A1 - Li, Chi-Yu A1 - Notay, Kunwar Vikramjeet T1 - Information Mining Framework Concept for Time-Series Data in Hydroinformatics Systems T2 - Forum Bauinformatik 2010 Y1 - 2010 SP - 161 EP - 168 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Notay, Kunwar Vikramjeet A1 - Li, Chi-Yu A1 - Simons, Franz T1 - Model Coupling by the Use of Autonomous Tensor Objects T2 - Forum Bauinformatik 2010 Y1 - 2010 SN - 978-3-8322-9456-4 SP - 161 EP - 168 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Notay, Kunwar Vikramjeet A1 - Stadler, L. A1 - Simons, F. A1 - Molkenthin, Frank A1 - Hinkelmann, R. ED - Hinkelmann, R. ED - Nasermoaddeli, M. H. ED - Liong, S. Y. ED - Savic, D. ED - Fröhle, P. ED - Daemrich, K. F. T1 - Model Coupling in Hydroinformatics Systems through the Use of Autonomous Tensor Objects T2 - Proceedings of 10th International Conference on Hydroinformatics, HIC 2012, understanding changing climate and environment and finding solutions, Hamburg, Germany, July 14 - 18, 2012 Y1 - 2012 SN - 978-3-941492-45-5 PB - TuTech Innovation CY - Hamburg ER - TY - CHAP A1 - Li, Chi-Yu A1 - Notay, Kunwar Vikramjeet A1 - Molkenthin, Frank ED - Hinkelmann, R. ED - Nasermoaddeli, M. H. ED - Liong, S. Y. ED - Savic, D. ED - Fröhle, P. ED - Daemrich, K. F. T1 - Time Series Scenario Composition Framework In Hydroinformatics Systems T2 - Proceedings of 10th International Conference on Hydroinformatics, HIC 2012, understanding changing climate and environment and finding solutions, Hamburg, Germany, July 14 - 18, 2012 Y1 - 2012 SN - 978-3-941492-45-5 PB - TuTech Innovation CY - Hamburg ER - TY - CHAP A1 - Molkenthin, Frank A1 - Li, Chi-Yu A1 - Notay, Kunwar Vikramjeet ED - Gourbesville, Philippe ED - Cunge, Jean ED - Caignaert, Guy T1 - Information Handling in Interdisciplinary Hydro-Environment Engineering Projects T2 - Advances in Hydroinformatics: SIMHYDRO 2012 - New Frontiers of Simulation N2 - Information handling in water related interdisciplinary engineering projects is a demanding challenge due to the mass of data from field work, laboratory experiments and numerical simulation. This paper describes a general concept for information handling in an interdisciplinary research unit using a generalized information modelling approach for multi-scale physical state variables in combination with metadata and Web services based information systems following the INSPIRE initiative. The research unit deals with the coupling of flow and deformation processes for modelling the movement of natural slopes and integrates data and models from different disciplines such as hydrology, hydrodynamics, geo-hydraulics, geo-physics and soil mechanics. Key idea is a generalized information modelling concept for any kind of physical state variables on different spatial and time scales using tensor and set theory from mathematics as well as object-oriented information modelling techniques. Tensor objects are used for the full information handling process from field data acquisition and management via information analysis and model coupling to information archiving and storage. A hydroinformatics system so-called “Turtle” has been developed using standard IC-Technology such as XML schemes for tensor objects (TensorML) and ISO 19115 and 19119 for metadata and geo-portal based interdisciplinary collaboration and long term archiving and reuse of the relevant information. KW - Hydroinformatics KW - Information Systems KW - INSPIRE KW - Model Coupling and Integration Y1 - 2014 UR - http://link.springer.com/chapter/10.1007%2F978-981-4451-42-0_6#page-1 SN - 978-981-4451-42-0 SN - 978-981-4451-41-3 U6 - https://doi.org/10.1007/978-981-4451-42-0_6 SP - 65 EP - 76 PB - Springer CY - Singapore [u.a.] ER - TY - CHAP A1 - Notay, Kunwar Vikramjeet A1 - Mendoza-Lera, Clara A1 - Federlein, Laura L. A1 - Molkenthin, Frank T1 - A coupled subsurface-flow and metabolism model to study the effects of solute fluxes in the hyporheic zone T2 - Proceedings of the 28th EnviroInfo 2014 Conference, Oldenburg, Germany September 10-12, 2014 N2 - The hyporheic zone and the streambed host a great part of the energy and material fluxes through river ecosystems. However, the role of heterogeneities in the hyporheic zone in metabolism is not clearly understood. This paper proposes a new way to approach the question by using a coupled subsurface-flow and metabolism model for investigating the role of heterogeneities in the hyporheic metabolism. Our results show that (i) our coupled model is feasible for investigating solute fluxes in the hyporheic zone under heterogeneous set-ups, and (ii) the incorporation of heterogeneities seems be of relevance for hyporheic metabolism estimations. Y1 - 2014 UR - http://enviroinfo.eu/sites/default/files/pdfs/vol8514/0293.pdf SN - 978-3-8142-2317-9 PB - BIS-Verlag CY - Oldenburg ER - TY - THES A1 - Notay, Kunwar Vikramjeet T1 - Model coupling in hydroinformatics systems through the use of autonomous tensor objects N2 - There is an increased focus on interdisciplinary research in hydroinformatic related projects for applications such as integrated water resources management, climate change modelling, etc. The solution of common problems in interdisciplinary projects requires the integration of hydroinformatic models into hydroinformatic systems by coupling of models, enabling them to efficiently share and exchange information amongst themselves. Coupling of models is a complex task and involves various challenges. Such challenges arise due to factors such as models required to be coupled together lacking coupling capabilities, different models having different internal data formats, lack of a coupling mechanism, etc. From the perspective of physics, different models may use different discretisations in space and time, operate on different scales in space and time, etc. A model coupling concept using a coupling broker, that is independent from the coupled models, has been developed in this work and been implemented as a prototype for a software framework for coupling hydroinformatic models. It is based on the approach of tensor objects and the ideas of the OpenMI standard for model coupling. Tensor objects are a complete representation of physical state variables including dimensions, units, values, coordinate systems, geometry, topology and metadata. They are autonomous entities that can adapt themselves to the requirements of coupled models through operations such as scaling, mapping, interpolation in space and time, etc. The central entity in coupling is the Tensor Exchange Server, which acts as the coupling broker. It is responsible for defining the coupling mechanism, brokering the communication between the models and adapting the information to the requirements of the coupled models by taking advantage of the functionality provided by tensor objects. By fulfilling these roles in coupling, the coupling broker concept goes one step further than tools such as the OpenMI standard and facilitates the task of coupling models since each coupled model doesn't individually need to be adapted to be able to perform these tasks on its own. The usefulness of the coupling broker concept for coupling models is demonstrated with the help of three application examples: firstly, a subsurface-flow model coupled with a model simulating metabolism in the hyporheic zone, secondly, a subsurface-flow model coupled with a surface-flow model and finally, an information management system presenting the results of a hydrodynamic simulation of a section of the river Rhine. These examples demonstrate the extensibility and flexibility of the presented coupling concept, which can be used to couple multiple hydroinformatic models in hydroinformatic systems. KW - Hydroinformatics Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-36182 UR - https://opus4.kobv.de/opus4-btu/frontdoor/index/index/docId/3618 ER -