- document
-
Kiewiet de Jonge, Fenna (author)District heating leverages centralised, high efficiency combined heat and power (CHP) systems. It uses waste heat to lower energy consumption and reduce greenhouse emissions. The system also supports renewable energy sources like geothermal and biomass, providing a sustainable heating alternative.<br/><br/>This report examines a nonlinear...bachelor thesis 2024
- document
-
Kootte, M.E. (author)Integrated electrical power flow simulations are concerned with solving the steady-state load flow problem on integrated transmission and distribution electricity networks. We have developed a framework to run these simulations efficiently, whilst keeping in mind the differences between these network types and accommodating the practical...doctoral thesis 2024
- document
-
Shahverdi, Amir Farbod (author), Mostafavi, F. (author), Roodkoly, Sogand Haghighat (author), Zomorodian, Zahra Sadat (author), Homayouni, Hoda (author)As the current environmental crisis and depletion of our energy resources are pushing the Architecture, Engineering, and Construction (AEC) industry toward the design and construction of High-Performance (HP) buildings, new organizational and technological methods of practice, such as Integrated Design Process (IDP) and Building Information...journal article 2024
- document
-
van Dijk, Julian (author)The Hierarchical Subspace Iteration Method is a novel method used to compute eigenpairs of the Laplace-Beltrami problem. It reduces the number of iterations required for convergence by restricting the problem to a smaller space and prolonging the solution as a starting point. This method has shown great performance improvements for Laplace...master thesis 2023
- document
-
Koopmans, Jaap (author)According to the Rijksinstituut voor Volksgezondheid en Milieu (RIVM), there will be more focus on tackling the unhealthy effects of urbanization in the near future. This together with the presence of a large stock of vacant buildings and other developments within these urban areas and the challenges which are formed by the developments in...master thesis 2023
- document
-
Alfaiate, J. (author), Sluys, Lambertus J. (author)In quasi-brittle materials, such as reinforced concrete, localisation of initially diffuse cracking evolving in localised cracking patterns consists of a numerically challenging task. With conventional iterative methods, convergence of the numerical solution scheme to model crack localisation is often difficult to obtain. On the other hand,...journal article 2023
- document
-
Shang, Y. (author), Nogal Macho, M. (author), Wolfert, A.R.M. (author)A co-simulation solution based on direct equilibrium of contact forces is proposed to simulate vehicle-track interaction (VTI) dynamics. It is developed in two platforms, which presents an iterative feedback loop that exchanges contact force files and structure response field in real-time. The load vector acting on the structure is described by...book chapter 2022
- document
-
Kouhkani, S. (author), Koppelaar, H. (author), Taghipour Birgani, O. (author), Argyros, I. K. (author), Radenović, S. (author)The objective in this article is to extend the applicability of Newton’s method for solving Banach space valued nonlinear equations. In particular, a new semi-local convergence criterion for Newton’s method (NM) based on Kantorovich theorem in Banach space is developed by application of the Heisenberg Uncertainty Principle (HUP). The...review 2022
- document
-
Nasikun, A. (author), Hildebrandt, K.A. (author)Sparse eigenproblems are important for various applications in computer graphics. The spectrum and eigenfunctions of the Laplace–Beltrami operator, for example, are fundamental for methods in shape analysis and mesh processing. The Subspace Iteration Method is a robust solver for these problems. In practice, however, Lanczos schemes are often...journal article 2022
- document
-
Vittorietti, M. (author), Hidalgo Garcia, J. (author), Sietsma, J. (author), Li, W. (author), Jongbloed, G. (author)Investigating the main determinants of the mechanical performance of metals is not a simple task. Already known physically inspired qualitative relations between 2D microstructure characteristics and 3D mechanical properties can act as the starting point of the investigation. Isotonic regression allows to take into account ordering relations...journal article 2021
- document
-
Bešinović, Nikola (author), Wang, Yihui (author), Zhu, Songwei (author), Quaglietta, E. (author), Tang, Tao (author), Goverde, R.M.P. (author)In big cities, the metro lines usually face great pressure caused by huge passengers demand, especially during peak hours. When disruptions occur, passengers accumulate quickly at stations. It is of great importance for dispatchers to take passenger flow control into consideration for the traffic management to ensure passengers' safety and to...journal article 2021
- document
-
Ahishakiye, Emmanuel (author), van Gijzen, M.B. (author), Tumwiine, Julius (author), Obungoloch, Johnes (author)Objective: Image denoising has been considered as a separate procedure from image reconstruction which could otherwise be combined with acquisition and reconstruction. This paper discusses a joint image reconstruction and denoising algorithm in low-field MRI using a dictionary learning approach. Method: Our proposed algorithm uses a two-level...conference paper 2020
- document
-
Zoutendijk, Mike (author)Structure Optimization has been an important subject with many applications for centuries. In the last sixty years, numerical optimization has facilitated large advancements in this field. One of the areas in Structure Optimization is Topology Optimization, which is used for Additive Manufacturing purposes. In this thesis we explore Static and...master thesis 2019
- document
-
Atsma, Michael (author)In this thesis, we look at the traditional way of calculating a ship’s Power-Speed function using the Iterative Method, and then compare this to the renewed method created by Michaël Mersie, called the Direct Method. We find that, only under very specific circumstances, the Iterative Method can be slightly better at estimating the function of...bachelor thesis 2019
- document
-
Swart, Wouter (author)The numerical simulation of brittle failure with nonlinear finite element analysis (NLFEA) remains a challenge due to robustness issues. These problems are attributed to the softening material behaviour and the iterative nature of the Newton-Raphson type methods used in NLFEA. However, robust numerical simulations become increasingly important,...master thesis 2018
- document
-
van den Boom, A.J.J. (author), Bruijn, Hilco de (author), De Schutter, B.H.K. (author), Özkan, Leyla (author)In this paper a new iterative approach is proposed for the design of a combined real-time scheduling and control algorithm that can be applied to industrial systems that are described by a hybrid model with a (semi-)cyclic behavior. Traditionally scheduling and control problems are considered in a sequential way. First the scheduling problem...journal article 2018
- document
-
Baldi, S. (author)This work proposes an iterative procedure for static output feedback of polynomial systems based on Sum-of-Squares optimization. Necessary and sufficient conditions for static output feedback stabilization of polynomial systems are formulated, both for the global and for the local stabilization case. Since the proposed conditions are bilinear...conference paper 2016
- document
-
Li, Q. (author), Wu, Yue (author), Borgart, A. (author)Hanging models play an important role in shaping a structure since a very early age, and were favored by A. Gaudi, H. Isler, F. Otto and other architects or engineers. Nowadays, with the development of numerical analysis theory and computer technique, it is more accurate and convenient to simulate these physical models via numerical means. Based...conference paper 2015
- document
-
Markensteijn, A. (author)Four iterative methods were used to solve the schrödinger equation on a rectangular scattering region with a uniform potential, namely GMRES, restarted GMRES, BiCGStab and IDR(s). A preconditioner like a shifted-Laplacian is tried to improve the convergence behaviour of GMRES. Finally, a disorded potential is introduced in the form of a random...bachelor thesis 2014
- document
-
Verweij, M.D. (author), Demi, L. (author), Van Dongen, K.W.A. (author)Nonlinear ultrasound is important in medical diagnostics because imaging of the higher harmonics improves resolution and reduces scattering artifacts. Second harmonic imaging is currently standard, and higher harmonic imaging is under investigation. The efficient development of novel imaging modalities and equipment requires accurate simulations...journal article 2013