Assessment and analysis of hook mounted compensation methods for offshore wind turbine blade installation

During single-blade offshore wind turbine (OWT) installation, wind disturbance results in blade root motion. The sensitivity to this wind disturbance is more significant for larger blades, reducing the allowable installation weather limit. A potential solution is a Hook Mounted Compensator (HMC) between the crane and the load that can provide...

Call graph analysis: Leveraging public test suites

Call graphs are useful tools for representing method relationships within software projects and correlations between dependencies. Although static analysis is a prevalent method for call graph construction, it has its limitations such as struggling with handling dynamic features and lambda expressions. In this research, we introduced an approach...

Conceptual analysis on Guyed Monopiles for Offshore Wind Turbine Generators in Deep Water

The demand for offshore wind energy has never been higher, yet the number of ideal areas for wind farm installations is decreasing. As a result, larger wind turbines are being placed in deeper waters, which poses opportunities for floating foundations. However, due to the industry's inability to scale up the production of relatively expensive...

Numerical study of hydrodynamic forces and dynamic response for barge type floating platform by computational fluid dynamics and engineering model

The hydrodynamic coefficients are evaluated by fully nonlinear Navier-Stokes forced oscillation simulations using the volume of fluid method. Richardson extrapolation is employed to obtain the grid-independent solution. The predicted hydrodynamic coefficients are validated by the water tank tests. The applicability of the drag coefficient...

Dynamic operation of an Integrated Direct Air Capture and CO2 Compression System

CO2 concentration in the atmosphere has soared since the industrial era owing to the rapid and unabated increase in fossil fuel consumption globally. This has resulted in an increase in global average temperature by ≈ 1.1 C in this period; and has sparked the concern of climate disaster events across the globe. In order to tackle the issue of...

Reducing payload motion during offshore operations

Offshore lifting operations must have reduced payload motion to increase safety and reduce operating time. When payload is retrieved from the splash zone to the deck, besides the crane block, no additional control can be applied on the underactuated system. Existing studies either assume more control over the payload or develop a control system...

A dynamic design and analysis of the flexible hose of the deepsea mining system

Climate change is a recurring topic in the news and goes side by side with the energy transition. The energy transition focuses on using clean energy generated by resources like wind and water. Due to the increasing demand for technology that focuses on generating and storing clean energy, the demand for metals grows. These metals are currently...

Non-Consensus Opinion Models with Byzantine Nodes

Opinion dynamics models study how the interaction among people influences the opinion formation process. In most opinion dynamics models, only one opinion could exist in the steady state, which is different from the real-life opinion formation process. In 2009, Shao \emph{et al.} introduced a non-consensus opinion (NCO) model, which allows...

Process Modelling, Characterization and Dynamic Analysis of Centralized Distillation System for Separation of Methanol and Water

Over the past few decades, there has been an increased awareness and concern about the rising pollution, global warming, sudden climatic changes, and the accelerating CO2 emissions that have coerced people to shift to renewable resources and sustainable fuels. Zero Emission Fuels (ZEF) is a leading startup company that focuses on developing a...

Planning low-error SHM strategy by constrained observability method

Structural identification using dynamical parameters (such as the natural vibration frequencies and mode shapes) is an important issue, especially in bridges or high-rise buildings. However, incorrect decisions could happen on the Structural Health Monitoring (SHM) strategy and the Structural System Identification (SSI) analysis that makes...

Runtime analysis of Android apps based on their behaviour

In the modern world, Smartphones are everywhere and Android is the most used operating system. <br/>To protect these devices against malicious actions, the behaviour of Android apps needs to be studied.<br/><br/>Current tooling does not provide complete insight into the behaviour of an Android app.<br/>A tool was built to observe what goes on...

Dynamic modeling of reversible solid oxide cell stack and control strategy development

Solid oxide cell systems (SOCs) are increasingly being considered for electrical energy storage and as a means to boost the use of renewable energy and improve the grid flexibility by power-to-gas electrochemical conversion. The control of several variables (e.g., local temperature gradients and reactant utilization) is crucial when the...

Evaluation of seismic induced liquefaction and related effects on dynamic behaviour of anchored quay walls

Liquefaction may have large influence on performance of anchored quay walls and is important to include in seismic design. Design codes provide evaluation methods that provide hardly any insight in the actual development of excess pore pressures and the don’t consider soil structure interaction. There is a need for tools that include these...

Understanding Ajax Applications by using Trace Analysis

Ajax is an umbrella term for a set of technologies that allows web developers to create highly interactive web applications. Ajax applications are complex; they consist of multiple heterogeneous artifacts which are combined in a highly dynamic fashion. This complexity makes Ajax applications hard to understand, and thus to maintain. For this...