Searched for: subject%3A%22steady%255C-state%22
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Kongurai, Krit (author)
State estimation (SE) is a crucial tool for power system state monitoring since the control center requires a process to deal with a large number of imprecise measurements. Several SE methods have been applied and developed for the electric power system in the transmission level in the past several decades. Meanwhile, SE for the distribution...
master thesis 2021
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Yu, G. (author)
Creating a gas-liquid foam means dispersing gas as individual bubbles in an aqueous solution, in which each gas bubble is separated by liquid films or lamella. The most common form of liquid foam (as opposed to solid foams, like polymer sponges) seen in day-to-day life is bulk foam. This refers to a foam that rests in a large container (or flows...
doctoral thesis 2021
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de Roos, Anouk (author)
Due to the much needed energy transition as agreed under the Paris climate agreement, it is expected that large amounts of variable renewable energy supply will be connected to the Dutch Transmission Network. Future social, economic and technological developments will determine both the amount of electrification as the central or decentral...
master thesis 2021
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Mahieu, Mare (author)
There are several different methods to solve the steady-state flow problem of district heating networks and gas networks. In this thesis, the nodal method, the loop method, and the loop-node method are compared. This is done in order to determine for what type of network, with specific characteristics, which of these methods is preferred. In...
bachelor thesis 2021
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van den Berg, Boudewijn (author), Manoochehri, M. (author), Kasting, Mindy (author), Schouten, A.C. (author), van der Helm, F.C.T. (author), Buitenweg, Jan R. (author)
A sustained sensory stimulus with a periodic variation of intensity creates an electrophysiological brain response at associated frequencies, referred to as the steady-state evoked potential (SSEP). The SSEPs elicited by the periodic stimulation of nociceptors in the skin may represent activity of a brain network that is primarily involved in...
journal article 2021
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Kootte, M.E. (author), Vuik, Cornelis (author)
This paper compares and assesses several numerical methods that solve the steady-state power flow problem on integrated transmission-distribution networks. The integrated network model consists of a balanced transmission and an unbalanced distribution network. It is important to analyze these integrated electrical power systems due to the...
journal article 2021
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Ahmadi Dastjerdi, A. (author), Hossein Nia Kani, S.H. (author)
Constant in gain Lead in phase (CgLp) compensators, which are a type of reset elements, have shown high potential to overcome limitations of linear control systems. There are few works which investigate the tuning of these compensators. However, there are some significant drawbacks which make those methods unreliable. First, their analyses...
journal article 2021
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Oonk, Robin (author)
Practical combinations of floor configurations and support conditions are studied for the development of a lightweight timber building method that is suitable for multi-family residential buildings. Classical vibration theory forms the base for a methodology that is developed to assess transmittance of vibrations to adjoining floor fields....
master thesis 2020
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Karittevlis, Christodoulos (author)
Background: When two acoustic sinusoids of slightly different frequencies are presented in the same ear, the listener perceives a beating sound with a rate the difference frequency between the two sinusoids. In the dichotic presentation of two acoustic sinusoids with slightly different frequencies, separately at the two ears, the listener...
master thesis 2020
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Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)
Ring-like structures are very commonly used in civil, mechanical and aerospace engineering. Typical examples of such structures are components in turbomachinery, compliant gears, conventional pneumatic tires and more recent non-pneumatic tires, to name a few. In this paper, a ring on elastic foundation is considered. The foundation, modelled as...
conference paper 2020
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Schöpe, M.I. (author), Driessen, J.N. (author), Yarovoy, Alexander (author)
The radar resource management problem in a multitarget tracking scenario for multi-function radar is considered. To solve it, an optimal balancing of the sensor budget by applying Lagrangian relaxation and the subgradient method is proposed. In a time-invariant scenario it is shown that the proposed method will lead to balanced budgets based on...
conference paper 2020
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Delissen, A.A.T.M. (author), van Keulen, A. (author), Langelaar, M. (author)
In many engineering applications, the dynamic frequency response of systems is of high importance. In this paper, we focus on limiting the extreme values in frequency response functions, which occur at the eigenfrequencies of the system, better known as resonant peaks. Within an optimization, merely sampling the frequency range and limiting the...
journal article 2020
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Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)
The in-plane steady-state response of a rotating ring on elastic foundation subjected to a stationary load is investigated theoretically using a high-order model in the framework of the plane strain assumption. The adopted high-order model accounts for the through-thickness variation of stresses and displacements, as well as the boundary...
journal article 2020
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Kootte, M.E. (author), Sereeter, B. (author), Vuik, Cornelis (author)
Steady-state power flow models are essential for daily operation of the electricity grid. The changing electrical environment requires a shift from separated power flow models to integrated transmission-distribution power flow models. Integrated models incorporate the coupling of the networks and the interaction that they have on each other,...
conference paper 2020
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Mianabadi, Ameneh (author), Davary, Kamran (author), Pourreza-Bilondi, Mohsen (author), Coenders-Gerrits, Miriam (author)
The Budyko framework was firstly developed to estimate actual evaporation as a function of precipitation and the aridity index at steady state conditions. Based on this framework, the water storage change in the watershed is assumed to be negligible at large spatial and temporal scales. However, steady state conditions are not valid for many...
review 2020
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Chakkingal, M. (author), Kenjeres, S. (author), Ataei Dadavi, I. (author), Tummers, M.J. (author), Kleijn, C.R. (author)
We report numerical simulations of natural convection and conjugate heat transfer in a differentially heated cubical cavity packed with relatively large hydrogel beads (d/L=0.2) in a Simple Cubic Packing configuration. We study the influence of a spatially non-uniform, sinusoidally varying, wall temperature on the local flow and heat transfer...
journal article 2020
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Lu, T. (author)
Rotating ring-like structures are very commonly used in civil, mechanical and aerospace engineering. Typical examples of such structures are components in turbomachinery, compliant gears, rolling tyres and flexible train wheels. At the micro-scale, rotating ring models find their applications in the field of ring gyroscopes, in which high...
doctoral thesis 2019
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Filius, Suzanne (author)
BACKGROUND - In a variety of patients with locomotive disorders gait efficiency is often assessed using mobile metabolic gas analysis during rehabilitative interventions. Conventionally, these measurements take 6 minutes per evaluated condition (e.g. with/without ankle-foot-orthosis; AFO). This duration is required since there is a dynamical...
master thesis 2019
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Püschmann, Julia (author)
Anthropogenic activities like chemical industries are releasing chlorinated species, such as perchlorate (ClO4-) or chlorite (ClO2-), into the environment. These substances are toxic and difficult to treat in the wastewater. However, nature offers a way to solve this problem. Perchlorate-respiring bacteria possess an enzyme, namely called...
master thesis 2019
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Visser, T. (author), March, G. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P (author)
Thermospheric wind measurements obtained from linear non-gravitational accelerations of the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite show discrepancies when compared to ground-based measurements. In this paper the cross-wind is derived from both the linear and the angular accelerations using a newly developed...
journal article 2019
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