Searched for: subject%3A%22Draft%22
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document
Shajahan, M.T. (author)
Dense suspension flows, both in the natural environment and industrial settings, are complex phenomena with significant implications. From rivers shaping landscapes to industrial processes involving slurry transport, these flows hold a prominent position in numerous sectors. This thesis delves into a specific facet of these intricate flows:...
doctoral thesis 2024
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Bajuk, Jože (author)
This thesis investigates the aerodynamics of two finite wall-mounted cylinders in tandem, focusing on drag reduction as a function of governing parameters.<br/>For the experimental wind tunnel campaign, two measurement techniques were employed: balance measurements and stereoscopic particle image velocimetry. While balance measurements exhibited...
master thesis 2024
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Brown, Reiny (author)
In cycling, the presence of drag reduction from drafting, when multiple cyclists ride in tandem, is a considerable area of performance enhancement for a cycling team and the customisation of this tandem group has the potential of maximising the drag reduction for the entire group or a specific cyclist. The flow interactions between two tandem...
master thesis 2023
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Tan, J. (author), Polinder, H. (author), Jarquin Laguna, A. (author), Miedema, S.A. (author)
An adjustable draft point absorber was recently proposed as a novel approach to improve power absorption with constrained power take-off (PTO) capacities. The key feature of the novel wave energy converter (WEC) concept is to adjust the buoy draft by regulating the ballast water inside the buoy, which aims to enable variation of the natural...
journal article 2023
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Shajahan, M.T. (author), Breugem, W.P. (author)
Particle-resolved Direct Numerical Simulations have been performed on the gravitational settling of mono-disperse solid spheres in a viscous fluid and triply periodic domain. In a comprehensive study, the bulk solid volume concentration was varied from ϕ=0.5 to 30%. To study the effect of inertia, three different Galileo numbers were...
journal article 2023
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van der Kroft, Bart (author)
During specific operations, offshore marine contractor Heerema Marine Contractors reduces the draft of their Semi-Submersible Crane Vessel (SSCV) such that the floaters are submerged in close proximity to the free surface. This draft is also known as inconvenient draft. At this draft the motions of the vessel do not fully comply anymore with the...
master thesis 2022
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Tan, J. (author), Polinder, H. (author), Jarquin Laguna, A. (author), Miedema, S.A. (author)
The Power Take-Off (PTO) rating of Wave Energy Converters (WECs) is generally much higher than the average extracted power. Scientific literature has indicated that downsizing the PTO capacity to a suitable level is beneficial for improving the techno-economic competitiveness. In this paper, a novel design, namely the adjustable draft system,...
journal article 2022
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Spoelstra, A.M.C.M.G. (author), Sciacchitano, A. (author), Scarano, F. (author), Mahalingesh, Nikhil (author)
The aerodynamic drag of a trailing cyclists in a tandem formation is investigated at different lateral and longitudinal separations. A Ring of Fire (RoF) experiment is conducted at the Tom Dumoulin bike park of Sittard-Geleen in the Netherlands. The method is based on stereoscopic Particle Image Velocimetry (Stereo-PIV) measurements followed...
journal article 2021
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Mahalingesh, Nikhil (author)
Aerodynamics plays a significant role in the field of cycling as it is the dominant resistive force at racing speeds of 50 km/h. Sporting events involving multiple cyclists leads to aerodynamic interactions between the cyclists and these interactions have been exploited for performance benefits. One such aerodynamic interaction is drafting,...
master thesis 2020
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Migalski, Jos (author)
The Helperzoom bridge is one of few existing prestressed slab-between-girder bridges that is being managed by Rijkswaterstaat. These bridges are built before 1980 and do not comply with the current standards. To evaluate the structural safety and capacity these bridges are being assessed. A total of four girders were taken from the Helperzoom...
master thesis 2020
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Spoelstra, A.M.C.M.G. (author), Mahalingesh, N. (author), Sciacchitano, A. (author)
An on-site Ring of Fire (RoF) experiment is performed at the Tom Dumoulin bike park in Sittard-Geleen, the Netherlands. The current work investigates the aerodynamic drag of a cyclist following a lead cyclist at different lateral and longitudinal separations; additionally, the athletes’ skills to maintain their position and distance with respect...
journal article 2020
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van Dorsser, Cornelis (author), Vinke, Frederik R.S. (author), Hekkenberg, R.G. (author), van Koningsveld, M. (author)
Prolonged periods of drought affect river discharges and cause water levels and available water depth to drop for extended periods of time. Low water depth has a major impact on the loading capacity of inland ships, and as a consequence on the transport capacity of the overall waterborne supply chain. Individual ship owners have detailed...
journal article 2020
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Geldermans, Daan (author)
Dykstra Naval Architects are regularly designing large classic sailing yachts or motor-sailors, of which the draft is an important design restriction.The sailing performance is increased by adding lift-generating appendages,without increasing the draft. An example is a retractable centre board, havinga big influence on the sailing properties....
master thesis 2018
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Zha, Congrui (author)
In the last decades, the improvement of innovative solutions on windows to achieve sustainability within the built environment is considered as a principal issue. Windows have long been used in buildings for daylight and ventilation. From many studies, health, comfort, and productivity are improved by the well-ventilated indoor environment,...
master thesis 2018
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Shtork, Sergey I. (author), Litvinov, Ivan V. (author), Gorelikov, Evgeny Y. (author), Mitryakov, Andrey S. (author), Hanjalic, K. (author)
The work reports on experimental study of flow and pressure pulsations in draft-tube of a laboratory air model of a Francis hydro-turbine operating over a broad range of regimes corresponding to different combinations of the runner rotation speed and flowrates. The velocity measurements using a computer-automated laser-Doppler anemometer and the...
abstract 2018
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Spaans, Duke (author)
Jumbo Maritime is a heavy lift shipping and offshore transportation &amp; installation contractor. The Fairplayer is one of the J-class vessels that is capable of performing offshore installation work. The two 900 ton Huisman cranes can lift up to 1800 ton combined, but the insufficient static stability of the Fairplayer results in a maximum...
master thesis 2017
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Clarkson, J.D. (author), Braun, K. (author), Desoto-Duncan, A. (author), Forsyth, G. (author), De Gijt, J.G. (author), Huber, N.P. (author), Miller, D. (author), Rigo, P. (author), Sullivan, D. (author)
A significant issue associated Flood Defence Systems (FDS) is the difficulty of predicting how these structures will behave when inevitably they have been loaded beyond their designed capacity by a flood. The flood can cause these structures to fail catastrophically with loss of life and substantial damage to property. For a limited incremental...
conference paper 2013
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Bermingham, S.K. (author), Neumann, A.M. (author), Kramer, H.J.M. (author), Verheijen, P.J.T. (author), Van Rosmalen, G.M. (author), Grievink, J. (author)
journal article 2000
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Nagai, Tamotsu (author), Yoshida, Yasushi (author)
journal article 1993
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Gates, E.T. (author), Herbich, J.B. (author)
Presently deep-draft navigation channel analysis, design and review is based on empirically derived ratios of the design vessel's dimensions. Because of radical changes in vessel operation purposes and characteristics, these ratios can no longer be safely or economically applied. The mathematical model and related theory described in this...
report 1977
Searched for: subject%3A%22Draft%22
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