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Zou, P. (author), Ruiter, N. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)The effects of surface roughness as induced by marine fouling on the hydrodynamic forces on a submerged floating tunnel (SFT) are experimentally and numerically investigated in detail at Reynolds numbers Re = 8.125 × 10<sup>3</sup>–5.25 × 10<sup>4</sup>. A sensitivity analysis to different roughness parameters including roughness height,...journal article 2023
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Sequeira, Aaron (author)Laminar-to-turbulent boundary layer transition on the wings and stabilizers of aircraft leads to a large increase in the skin-friction drag they experience during flight. This has motivated prolific research into understanding and delaying the transition process, in an effort to improve the economic and ecological impact of air travel. The swept...master thesis 2022
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FRATZESKOU, CHRISTINA (author)Urban physics is a multi-scale and interdisciplinary field, that combines science and engineering for the study of physical processes in urban areas. Computational Fluid Dynamics (CFD) is considered a powerful tool for the study of these processes. In the context of microscale phenomena these processes refer to the transfer of heat and mass in...master thesis 2022
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DIMOU, KYPRIANOS (author)Nowadays, climate change and global warming phenomena are becoming more and more serious issues. In order to sustain the enormous worldwide energy demand, society consumes a high amount of fuel, resulting into the steep increase of the level of CO\textsubscript{2} in the environment. Therefore, the massive greenhouse gases emissions in the...master thesis 2022
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Beitler, Jari (author)The Nuclear Research and consultancy Group (NRG) performs CFD simulations to improve the safety of nuclear installations and conducts research leading to new computational methods. One of the problems encountered in nuclear installations is that vital parts of the reactor, such as the fuel rod bundle, corrode over time. Corrosion leads to...master thesis 2022
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van Gisbergen, Bart (author)Since the introduction of rough volatility there have been numerous attempts at combining it with existing models in order to better approximate the volatility surface with a low number of parameters. The drawback of rough volatility is usually the time needed to compute a volatility surface. We compare three major rough volatility models and...master thesis 2022
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Buitelaar, Maarten (author)A dam-break wave can result in considerable damages and casualties. Events that can lead to such waves include dike and dam breaches, storm surges and impulse waves. Dutch history is familiar with a number of coastal dike breaches but also river dike breaches have occurred, resulting in dam-break waves reaching far inland. Beyond the Netherlands...master thesis 2022
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Barahona Lopez, Marina (author)Current manufacturing techniques in the aviation industry result in a number of two-dimensional surface irregularities (e.g. panel joints, seals, seams) which can lead to an increase in skin friction due to premature boundary layer transition. Panel joints are...master thesis 2022
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Richardson, Benjamin A. (author), Vardar, Y. (author), Wallraven, Christian (author), Kuchenbecker, Katherine J. (author)Whenever we touch a surface with our fingers, we perceive distinct tactile properties that are based on the underlying dynamics of the interaction. However, little is known about how the brain aggregates the sensory information from these dynamics to form abstract representations of textures. Earlier studies in surface perception all used...journal article 2022
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Bouwmeester, W. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)A method to compute road surface signatures in the automotive scenario is presented. This method is subsequently applied to a rough asphalt surface without undulations. It is shown that, due to the observation geometry, the road surface signature experiences significant spreading along the Doppler-axis, resulting in a distinct range-Doppler map...conference paper 2022
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di Biase, V. (author), Kuschnerus, M. (author), Lindenbergh, R.C. (author)In recent years, our knowledge of coastal environments has been enriched by remotely sensed data. In this research, we co-analyse two sensor systems: Terrestrial Laser Scanning (TLS) and satellite-based Synthetic Aperture Radar (SAR). To successfully extract information from a combination of different sensors systems, it should be understood how...journal article 2022
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Giasin, Khaled (author), Atif, Muhammad (author), Ma, Yuan (author), Jiang, Chulin (author), Koklu, Ugur (author), Sinke, J. (author)GLARE laminates are multi-layered metal-composite materials created from bonding sheets of metallic alloys with carbon or glass fibre layers. The application of hybrid-conventional machining processes such as ultrasonic-assisted drilling (UAD) is becoming of great interest to the aerospace industry due to its capability in reducing the...journal article 2022
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Iannini, L. (author), Comite, D. (author), Pierdicca, N. (author), Lopez Dekker, F.J. (author)Bistatic scattering from rough surfaces is typically approached through the analysis of the scattered field in the conventional H and V polarization basis, which coincides with the zenith and azimuth unit vectors in a spherical reference frame. This study delves into the impacts of different choices of the transmit and receive linear basis on...journal article 2022
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Gradl, P.R. (author), Cervone, A. (author), Gill, E.K.A. (author)Additive Manufacturing (AM) offers new design and manufacturing opportunities of thin-wall microchannel heat exchangers for aerospace and industrial applications. Laser Powder Directed Energy Deposition (LP-DED) is an AM process providing large scale manufacturing of thin-wall microchannel heat exchangers. Successful industrialization of the LP...journal article 2022
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Wave overtopping discharges at rubble mound breakwaters including effects of a crest wall and a bermvan Gent, M.R.A. (author), Wolters, Guido (author), Capel, Alex (author)Physical model tests have been performed to study wave overtopping at rubble mound breakwaters, including breakwaters with a crest wall, breakwaters with a berm, and breakwaters with a crest wall and a berm. For rubble mound structures with a protruding crest wall or with a stable berm, limited information is available in literature even...journal article 2022
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Jin, J. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)Laser Doppler Vibrometer (LDV) is extensively applied in remote and precise vibration measurements for structural monitoring. Speckle noise is a severe signal issue restricting LDV applications, mainly when an LDV scans from moving platforms. Realistic simulations and thorough characterizations of speckle noise can support the despeckle...journal article 2022
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Bian, Jianjun (author), Nicola, L. (author)It has been demonstrated through experiments and simulations that friction decreases significantly when graphene is used as a solid lubricant on various materials. However, the effect of increasing the number of graphene layers on lubrication is controversial. Some studies predict an increase of friction with the number of layers that can be...journal article 2022
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Wang, Jianyong (author), Yang, Jun (author), Gong, Jishuang (author), Zhao, Chunrong (author), Hooman, K. (author)Supercritical flow through a horizontal pipe leads to a non-uniform peripheral wall temperature distribution even when the wall heat flux is kept constant and uniform. This is attributed to lower heat transfer coefficient at the top section where the denser fluid tends to sink. Hence, to obtain a uniform wall temperature, a designed wall...journal article 2022
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Buckley, Mark L. (author), Lowe, Ryan J. (author), Hansen, Jeff E. (author), van Dongeren, Ap R. (author), Pomeroy, Andrew (author), Storlazzi, Curt D. (author), Rijnsdorp, D.P. (author), da Silva, Renan F. (author), Contardo, Stephanie (author), Green, Rebecca H. (author)Wave breaking on the steep fore-reef slopes of shallow fringing reefs can be effective at dissipating incident sea-swell waves prior to reaching reef shorelines. However, wave setup and free infragravity waves generated during the sea-swell breaking process are often the largest contributors to wave-driven water levels (wave runup) at the...journal article 2022
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Cadambi Padmanaban, Uttam (author)Distributed surface roughness elements characterise Thermal Protection Systems (TPS) typical of supersonic and hypersonic flows. The presence of these distributed roughness elements cause an increase in drag and heat transfer. As opposed to incompressible flow over roughness elements, there are very few experimental and numerical studies on...master thesis 2021