Pages
- 1
- 2
- document
-
Borja Rosales, L.P. (author), Scherpen, Jacquelien M.A. (author), Fujimoto, Kenji (author)In this article, we treat extended balancing for continuous-time linear time-invariant systems. We take a dissipativity perspective, thus, resulting in a characterization in terms of linear matrix inequalities. This perspective is useful for determining a priori error bounds. In addition, we address the problem of structure-preserving model...journal article 2023
- document
-
Vergassola, M. (author), Cabboi, A. (author), van der Male, P. (author), Colomés, Oriol (author)This work aims to develop a low-fidelity model for a lattice support structure for offshore wind applications. The proposed low-fidelity model consists of a sequence of regular Timoshenko beams, each of them characterized by homogenized mechanical and mass properties representative of the single bays of the reference space-frame structure....journal article 2023
- document
-
Sangiorgio, Matteo (author), Cananzi, Davide (author), Weber, Enrico (author), Zatarain Salazar, J. (author), Castelletti, Andrea (author)Integrated management of water reuse technologies and coordinated operations with other water system components is fundamental to fully exploiting reuse potential. Yet, these technologies are primarily designed considering their individual efficiency more than possible synergies with traditional water management practices. In this paper, we...journal article 2022
- document
-
Tyuryukanov, I. (author)The vast size of a modern interconnected power grid precludes controlling and operating it as a single object. Subdividing a power grid into a number of internally coherent areas allows to cope with its inherent complexity and to enable more efficient control structures. This thesis focuses on discovering the power system structure to facilitate...doctoral thesis 2020
- document
-
Tyuryukanov, I. (author), Popov, M. (author), van der Meijden, M.A.M.M. (author), Terzija, Vladimir (author)Identifying generator coherency with respect to slow oscillatory modes has numerous power system use cases including dynamic model reduction, dynamic security analysis, or system integrity protection schemes (e.g., power system islanding). Despite their popularity in both research and industry, classic eigenvector-based slow coherency techniques...journal article 2020
- document
-
Abdul Rozak Rivai Fassah, Abdul (author)In recent years, developments in the field of aerospace materials and structures has been bringing major breakthroughs in the construction of air vehicles to be more lightweight yet with higher strength. However, the aircraft body can deform more appreciably due to the occurrence of flow separation and flutter. Therefore, active control is...master thesis 2019
- document
-
Brandt, C. (author)The research field of geometry processing is concerned with the representation, analysis, modeling, simulation and optimization of geometric data. In this thesis, we introduce novel techniques and efficient algorithms for problems in geometry processing, such as the modeling and simulation of elastic deformable objects, the design of tangential...doctoral thesis 2019
- document
-
Brandt, C. (author), Scandolo, L. (author), Eisemann, E. (author), Hildebrandt, K.A. (author)We introduce the Reduced Immersed Method (RIM) for the real-time simulation of two-way coupled incompressible fluids and elastic solids and the interaction of multiple deformables with (self-)collisions. Our framework is based on a novel discretization of the immersed boundary equations of motion, which model fluid and deformables as a single...journal article 2019
- document
-
Brandt, C. (author), Scandolo, L. (author), Eisemann, E. (author), Hildebrandt, K.A. (author)We introduce a variational approach for modeling n-symmetry vector and direction fields on surfaces that supports interpolation and alignment constraints, placing singularities and local editing, while providing real-time responses. The approach is based on novel biharmonic and m-harmonic energies for n-fields on surface meshes and the...journal article 2018
- document
-
Kirschneck, M. (author)The ever growing population of human beings on earth introduces the challenge of providing affordable, sustainable energy for everyone. Emerging markets, such as China, India or Brazil, quench their thirst for cheap energy by fossil fuels and nuclear power. At the same time researchers from all over the globe warn the public of the advent of a...doctoral thesis 2016
- document
-
Van der Valk, P.L.C. (author)Large scale offshore wind power has been recognized as a key technology to increase the share of renewable energy. However, as this energy source is currently still relatively expensive, efforts are made to significantly reduce its costs. Cost reductions are to be achieved, for instance, by installing larger turbines in larger offshore wind...doctoral thesis 2014
- document
-
Xu, M. (author)Fresh water supply and flood protection are two central issues in water management. Society needs more and more fresh water and a safe water system to guarantee a better life. A more severe climate will result in more droughts and extreme storms. As a consequence, salt water intrusion will increase. Therefore, clean and fresh water is becoming...doctoral thesis 2013
- document
- Voormeeren, S.N. (author) doctoral thesis 2012
- document
-
Dorneanu, B. (author)During the last decades, models have become widely used for supporting a broad range of chemical engineering activities, such as product and process design and development, process monitoring and control, real time optimization of plant operation or supply chain management. Although tremendous advancements continue to take place in the...doctoral thesis 2011
- document
-
Kaleta, M.P. (author), Hanea, R.G. (author), Heemink, A.W. (author), Jansen, J.D. (author)Gradient-based history matching algorithms can be used to adapt the uncertain parameters in a reservoir model using production data. They require, however, the implementation of an adjoint model to compute the gradients, which is usually an enormous programming effort. We propose a new approach to gradient-based history matching which is based...journal article 2010
- document
-
Heijnen, J.J. (author)It is shown that properties of biological systems which are relevant for systems biology motivated mathematical modelling are strongly shaped by general thermodynamic principles such as osmotic limit, Gibbs energy dissipation, near equilibria and thermodynamic driving force. Each of these aspects will be demonstrated both theoretically and...journal article 2010
- document
-
Van der Valk, P.L.C. (author)In modern day society concern is growing about the use of fossil fuels to meet our constantly rising energy demands, and the need for more sustainable energy is growing. Wind energy certainly has the potential to play a significant role in a sustainable future world energy supply and the wind power industry has grown to a globalized multi...master thesis 2010
- document
-
Markovinovic, R. (author)This thesis is concerned with low-order modelling of heterogeneous reservoir systems for the purpose of efficient simulation and optimization of flooding processes with multiple injection and production (smart) wells. Typically, one is initially equipped with a physics-based ('white-box') model consisting of O(103-106) equations and parameters...doctoral thesis 2009
- document
-
Vermeulen, P.T.M. (author), Te Stroet, C.B.M. (author), Heemink, A.W. (author)Despite increasing computational resources many high?dimensional applications are impractical for model inversions. In this paper, two methods are presented that are promising for high?dimensional model inversion. The methods draw on proper orthogonal decomposition (POD) and yield reduced models that describe a truncated behavior of the original...journal article 2006
- document
-
Van Doren, J. (author), Markovinovic, R. (author), Jansen, J.D. (author)During the design of development concepts for the exploitation of oil and gas reservoirs, frequent use is made of numerical simulation of the flow of multi-phase fluids through porous rock. Recently, increased attention has been paid to systematic optimization of well positions and operating parameters (rates, pressures) over the life of the...conference paper 2006
Pages
- 1
- 2