Design of a constant diameter retractable Jet-ring with inside-out jetting combined with a Vibro-hammer

Reducing noise pollution during offshore monopile installation is crucial for marine life. Current installation methods create too much noise or do not have the certainty of reaching the required depths. By using a Vibrohammer combined with a Jet-ring this problem could be solved. A Jet-ring is a tool to reduce the sand induced inside shaft...

Storage and retrieval mechanisms in mobile spam blocking applications

Applications on Android phones which block spam calls could be argued a necessity for people unfortunate enough to have their number on spam lists. Third-party applications provide exten- sive, up-to-date blocklists to screen incoming calls. This paper analyses and describes how these types of applications store and access their data. First we...

Modeling the electrochemical conversion of carbon dioxide to formic acid or formate at elevated pressures

In this work a model of an elevated pressure CO₂ electrolyzer producing primarily formate or formic acid is presented. It consists of three parts: A model of the bulk electrolyte, the diffusion layer, and the electrode surface. Data from the literature was used to validate both the bulk portion of the model, as well as the overall...

Modeling Dual Fuel Internal Combustion Engine (ICE) Running on Methanol and Diesel

Waterborn transport currently runs on diesel driven Internal Combustion Engines<br/>(ICE). To reduce Green House Gas (GHG) emissions an option is to shift towards<br/>alternative fuels, like alcohols. This thesis focusses on methanol in ICEs. The<br/>combustion of methanol in ICEs can be done in numerous manners, where fuel<br/>altering,...

Transient modelling of rotating and stationary cylindrical heat pipes: An engineering model

Rotating wickless and stationary capillary cylindrical heat pipes are widely used heat transfer devices. Transient behavior of such heat pipes has been investigated numerically with computational fluid dynamics and lumped parameter models. In this paper, the advantages of both methods are combined into a novel engineering model that is low in...

Communication Architecture for a Hydraulic Simulation System

HedoN is a high-tech electronic development and production company that tasked a group of six TU Delft Electrical Engineering bachelor students to design a simulation system for hydraulic plants. This simulation system consist out of a central Hydraulic Simulation Unit (HSU) that runs a hydraulics simulation and controls various electrical...

The influence of tip shape on bending force during needle insertion

Steering of needles involves the planning and timely modifying of instrument-tissue force interactions to allow for controlled deflections during the insertion in tissue. In this work, the effect of tip shape on these forces was studied using 10 mm diameter needle tips. Six different tips were selected, including beveled and conical versions,...

DEFMEF predesign document

The predesign document of DEFMEF presents the decisive requirements for the DEFMEF language and the associated DEFMEF translator. It also shows a basic technical design, which fulfills the requirements. DEFMEF as a software design language has been designed so, that it is possible to describe both a technical design and a detailed design with it...

Condition monitoring, trend analysis and maintenance prediction