Searched for:
(61 - 80 of 119)

Pages

document
Nayak, Pratik (author)
Direct Numerical simulations (DNS) belong to the class of simulations that strive to emulate the real physical flow by trying to simulate the complete range of scales involved in the flow. Though the computational power has steadily increased in the past few decades, resolving the complete range of scales from the largest scales up to the...
master thesis 2017
document
Fagioli, Giorgio (author)
The aortic valve is a valve made of three thin flexible leaflets which open and close in order to allow the unidirectional passage of blood from the left ventricle to the aorta. Because of this repetitive motion at each cycle, the valve is constantly exposed to large variations of pressure and hemodynamic forces. Deterioration in its peculiar...
master thesis 2017
document
Francés Mollá, V. (author)
Turbomachines have experienced a fast development over the last years, and are present in a wide range of devices involved in the generation of electricity and the transportation sector. Current challenges in both sectors have driven quite a number of developments regarding the increase of efficiency and use of new types of devices. Those...
master thesis 2017
document
Mohan, A. (author)
A previous work at Royal IHC, following the observation from sea trials of trailing suction hopper dredgers (TSHD) that the turning performance of bow tunnel thrusters significantly reduced at slow forward speeds, studied the flow behaviour and performance of bow tunnel thrusters at slow forward speeds using Computational Fluid Dynamics (CFD)....
master thesis 2017
document
Van Sluis, M. (author)
master thesis 2017
document
Gabrielse, B.C. (author)
In the automotive industry the development process is driven by a highly competitive market, calling for shorter and more cost-efficient development procedures. Computer aided engineering (CAE) is one possibility to achieve these reductions and becomes an inevitable tool in the development process. However, CAE does not provide the subjective...
master thesis 2017
document
Druzdzel, P. (author)
Since the problem of global warming has been broadly considered as vital and due to constantly rising oil prices, further fossil fuels exploitation requires diametrical changes immediately. The demand for environmentally friendly improvements does not only entail searching for new resources but also utilizing those which are available and more...
master thesis 2017
document
Subramani, K. (author)
Micro turbines are miniaturised gas turbines and have the potential to be effectively used in combined heat and power (CHP) applications due to their advantages over reciprocating engines. Micro Turbine Technology B.V. is developing a 3kW recuperated micro turbine for a micro-CHP application and is currently looking for ways to improve the...
master thesis 2016
document
Peeters, P.T. (author)
Pipelines with multiphase flow of gas, oil, and water are commonly used in the oil and gas industry. In the presence of offshore platforms or vessels, the pipeline ends with a vertical riser. A possible new concept is to use a single large diameter pipeline along the sea floor that ends into multiple smaller diameter risers. This concept might...
master thesis 2016
document
Stylianou, S. (author)
Cogenra company has created a low concentration PV/Thermal system that produces both thermal energy and electricity simultaneously, mainly for commercial and industrial applications. The realization of a system that combines photovoltaic modules, solar thermal collectors and concentrating mirrors makes it a complicated system to study. So far,...
master thesis 2016
document
van Dijk, N. (author)
Offshore structures with partially filled storage tanks may experience sloshing of the cargo when exposed to waves. Inventive use on the topside result in storage tanks which are built as an integrated part of the deck structure. Weight control and available space is often a critical issue for offshore projects and can be improved by this...
master thesis 2016
document
Satheesh Kumar Nair, V. (author)
High-order numerical methods for Computational Fluid Dynamics have undergone significant fundamental developments over the last two decades owing to combined efforts from the applied mathematics and engineering communities. Even though low-order numerical methods are still the standard in industry, the increased requirements of engineering...
master thesis 2016
document
Kortleven, M. (author)
In this research computational fluid dynamics (CFD) is used to model a vertical axis wind turbine. Well known turbulence models | i.e. the k-epsilon and k-omega SST model | are used and compared in their performance against each other and a set of experimental data. The formal research question is "What models are available for the simulation of...
bachelor thesis 2016
document
Rodermans, M.J. (author)
Heerema Marine Contractors (HMC) is, amongst other activities, involved in the installation of subsea pipelines and subsea structures. In order to increase efficiency during production and installation these subsea structures are welded into the pipeline instead of installed separately. The presence of subsea structures in the pipeline increases...
master thesis 2016
document
Visscher, F.J.C. (author)
Dredging is a very important activity for mankind, for example deepening waterways or creating artificial islands. The Trailing Suction Hopper Dredger (TSHD) is an important dredging vessel, this vessel uses the so called drag head. It is common practice to use water jets in drag heads to create a more efficient dredging process. Some...
master thesis 2016
document
Roks, G.M. (author)
In this research a case study is performed to vapor formation in a turbine bearing. As a result of centrifugal forces in the rotating lubricant flow, low pressure regions occur in the bearing chamber. It is expected that vapor starts to form above a certain rotor speed. The formation of gaseous lubricant is presumed detrimental to the operation...
master thesis 2016
document
Dingemans, N.T. (author)
Moonpools are vertical wells used on most offshore vessels at Huisman Equipment. The oscillations in the moonpool lead to a significant increase in resistance for vessels in transit conditions. In the concept design phase it has proven difficult to predict the moonpool behaviour, as well as the effect of implementing appendages within a long...
master thesis 2016
document
Schouten, T.D. (author)
master thesis 2016
document
Koning, W.J.F. (author)
Experimental techniques to measure rotorcraft aerodynamic performance are widely used. However, most of them are either unable to capture interference effects from bodies, or require an extremely large computational budget. The objective of the present research is to develop an XV-15 Tilt Rotor Research Aircraft rotor model for investigation of...
master thesis 2015
document
Schaap, T. (author)
In this master thesis the flow behavior and the performance of a bow tunnel thruster at slow forward vessel motion is studied using Computational Fluid Dynamics (CFD). The study analyzes the flow and the turning ability for a cylindrical cross-section and the effect of changing the cross-section of the bow tunnel thruster. At Royal IHC it is...
master thesis 2015
Searched for:
(61 - 80 of 119)

Pages