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Ananduta, W. (author), Grammatico, S. (author)We formulate the optimal flow problem in a multi-area integrated electrical and gas system as a mixed-integer optimization problem by approximating the non-linear gas flows with piece-wise affine functions, thus resulting in a set of mixed-integer linear constraints. For its solution, we propose a novel algorithm that consists in one stage for...conference paper 2022
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Cai, Yifan (author), Dahiya, Abhinav (author), Wilde, N. (author), Smith, Stephen L. (author)In this paper, we consider the problem of allocating human operator assistance in a system with multiple autonomous robots. Each robot is required to complete independent missions, each defined as a sequence of tasks. While executing a task, a robot can either operate autonomously or be teleoperated by the human operator to complete the task at...conference paper 2022
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Karbasizadeh, Nima (author), Hassan HosseinNia, S. (author)According to the well-known loop-shaping control design approach, the steady-state precision of control systems can be improved by stacking integrators. However, due to the waterbed effect in linear control systems, such an action will worsen the transient response by increasing overshoot and creating wind-up problems. This paper presents a new...conference paper 2022
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Wan, Z. (author), Xu, Y. (author), Zhang, Y. (author), He, S. (author), Šavija, B. (author)Cracking is one of the main causes for deterioration of concrete structures. Self-healing concrete with 3D-printed vascular networks has excellent potential for autonomous self-healing. This approach is scarcely investigated: no studies have been devoted to the influence of printing parameters on the properties of vascular based self-healing...journal article 2022
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Peng, Shaoyuan (author), Liu, Y. (author), Li, Renge (author), Wei, Ying (author), Chan, Pak Wai (author), Li, Sunwei (author)Simulating a typhoon’s wind field via mesoscale models is important in terms of providing not only the guidelines for urban planning and onshore/offshore constructions, but also the provision of insight into the dynamics and thermodynamics of tropical cyclone systems. Therefore, the errors that are contained in simulation results were...journal article 2022
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Saeidtehrani, S. (author), Fazeres-Ferradosa, Tiago (author), Rosa-Santos, Paulo (author), Taveira-Pinto, Francisco (author)Hybrid wave-wind energy converters are considered an innovative solution to decrease costs in the various phases of installation and operation and lead to a lower Levelized Cost of Energy. Currently, there are different concepts in various Technology Readiness Levels. This paper provides a comprehensive review of existing wave-wind energy...review 2022
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Karamitopoulos, P. (author), Donselaar, M.E. (author), Weltje, G. J. (author), van Toorenenburg, K. A. (author)An advection–diffusion model of fluvial processes was used to analyze the stratigraphic expression of avulsions in terminal river systems and understand their control on basin-fill architecture. The initial and boundary conditions of the model runs (i.e., catchment area, smoothed initial topographic surface, grain-size distribution and...journal article 2022
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van As, K. (author), Simons, Bram A. (author), Kleijn, C.R. (author), Kenjeres, S. (author), Bhattacharya, N. (author)We study how the speckle contrast depends on scatterer velocity, with the goal of further developing laser speckle imaging as a quantitative measurement technique. To that end, we perform interferometric computer simulations on a dilute plug flow. The results of our numerical experiment, that we compare with known analytical expressions to...journal article 2022
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Yao, Dengzhi (author), Wang, Ju (author), Cai, Yao (author), Zhao, Tingting (author), An, Xizhong (author), Zhang, Hao (author), Fu, Haitao (author), Yang, Xiaohong (author), Zou, Qingchuan (author), Wang, L. (author)Understanding and controlling the composition segregation during powder spreading is of key importance in the additive manufacturing (AM) of composite materials. Under this circumstance, the segregation behavior of WC/316 L composite powders during spreading in laser powder bed fusion (LPBF) AM was numerically investigated by the discrete...journal article 2022
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MU, Song (author), XIE, Deqing (author), LIU, Jianzhong (author), ZHANG, Yunsheng (author)The parameter equations of circle, Elliptic and arbitrary polymorphic were deduced by polar coordinates transformation in this paper, and a 2D reconstruction method of irregular particles based on cellular automata theory was introduced, briefly. The particles size and quantity information could be automatic computed by a sectional calculate and...conference paper 2021
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Zuo, Y. (author), Ye, G. (author)For the first time, this study developed a novel model, named GeoMicro3D, to simulate the reaction process and microstructure formation of alkali-activated slag. The GeoMicro3D model consists of four modules that are designed to simulate, respectively: (i) the initial spatial distribution of real-shape slag particles in alkaline activator, ...journal article 2021
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Jamalinia, E. (author), Sadeghi Tehrani, F. (author), Steele-Dunne, S.C. (author), Vardon, P.J. (author)Climatic conditions and vegetation cover influence water flux in a dike, and potentially the dike stability. A comprehensive numerical simulation is computationally too expensive to be used for the near real-time analysis of a dike network. Therefore, this study investigates a random forest (RF) regressor to build a data-driven surrogate for a...journal article 2021
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Kong, Xiangshao (author), Zhou, Hu (author), Kuang, Zheng (author), Zheng, Cheng (author), Li, X. (author), Wu, Weiguo (author), Guan, Zhongwei (author)Test on a small scaled model is an effective approach to predict the dynamic response of full scale structure under blast loadings. However, the geometric dimensions of specimens cannot simply comply with complete geometrical similarity due to manufacture or test restrictions. It would result in the difference structural performance between...journal article 2021
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Wang, Y. (author), Voskov, D.V. (author), Khait, M. (author), Saeid, S. (author), Bruhn, D.F. (author)A realistic deep low-enthalpy geothermal reservoir based on real data with high detail and complicated sedimentary structure is utilized to perform sensitivity analyses of the geological features influencing reservoir properties. We perform simulations using the Delft Advanced Research Terra Simulator (DARTS). Compelling numerical performance...journal article 2021
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Karagiannis, A. (author)The Micropropulsion Group of the department of Space Systems Engineering of the Delft University of Technology is developing resistojet thrusters for small satellites operating on the vapourisation of liquid water via an electric heater and its subsequent expansion via a nozzle into vacuum for the generation of thrust. As the water vapour...master thesis 2020
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Xu, Y. (author), Schlangen, E. (author), Lukovic, M. (author), Šavija, B. (author)This research presents an investigation of the compressive behavior of auxetic cementitious cellular composites (CCCs) using a combination of experiments and finite element (FE) simulations. Typical auxetic centrosymmetric geometry was used as unit cells for the cellular structure and fiber reinforced cementitious mortar were used as...journal article 2020
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Tan, Xuyan (author), Chen, Weizhong (author), Wang, L. (author), Yang, Jianping (author)The investigation of concrete structural performance is crucial to maintain the stability of infrastructure. In order to assess structural stability, this work focuses on the development of an integrated framework to detect damaged conditions in the field and analyze their effect on mechanical performance through nondestructive testing (NDT)...journal article 2020
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Botman, Willemijn (author)The development of renewable energy applications has become increasingly important in the past couple of years due to a growing global energy demand and increasing consciousness of global warming. A recent development in renewable energy is the application of offshore floating solar systems. A prototype design for this application, as developed...master thesis 2019
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Liu, Faqi (author), Yang, Hua (author), Yan, R. (author), Wang, Wei (author)The behaviour of square steel tube confined reinforced concrete columns after fire exposure was studied experimentally and numerically in this paper. Eighteen stub columns were first heated following the ISO 834 standard fire including both heating and cooling phases, and were subsequently loaded to failure after cooling to ambient temperature....journal article 2019
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Wang, H. (author), Zhang, Yue (author), Zhang, Yi (author), Feng, Shuyin (author), Lu, Guoyang (author), Cao, Lintao (author)Microwave heating is an encouraging heating technology for the maintenance, recycling, and deicing of asphalt pavement. To investigate the microwave heating properties of asphalt mixture, laboratory tests and numerical simulations were done and compared. Two types of Stone Mastic Asphalt (SMA) mixture samples (with basalt aggregates and steel...journal article 2019