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Full-Text Articles in Engineering
Mitigating The Structural Vibrations Of Wind Turbines Using Tuned Liquid Column Damper Considering Soil-Structure Interaction, Tadhg Buckley, Phoebe Watson, Paul Cahill, Vesna Jaksic, Vikram Pakrashi
Mitigating The Structural Vibrations Of Wind Turbines Using Tuned Liquid Column Damper Considering Soil-Structure Interaction, Tadhg Buckley, Phoebe Watson, Paul Cahill, Vesna Jaksic, Vikram Pakrashi
Publications
This paper considers the potential of using a Tuned Liquid Column Damper (TLCD) to reduce structural vibrations of a wind turbine tower. The effect of TLCD on wind turbine towers, including the soil-structure interactions for a monopile foundation was modelled theoretically and scaled laboratory experiments were carried out to validate these results. The tower of the turbine is represented as a Euler beam with a set of springs at the boundary to simulate the soil-structure interaction. TLCD design was carried out using such a model and the reduction in tower vibrations due to the deployment of TLCD was then examined …
Fatigue Life Of Pitch- And Stall-Regulated Composite Tidal Turbine Blades, Ciaran R. Kennedy, Vesna Jaksic, Sean B. Leen, Conchúr M. Ó Brádaigh
Fatigue Life Of Pitch- And Stall-Regulated Composite Tidal Turbine Blades, Ciaran R. Kennedy, Vesna Jaksic, Sean B. Leen, Conchúr M. Ó Brádaigh
Publications
Tidal turbine blades are subject to harsh loading and environmental conditions, including large thrust and torsional loadings, relative to wind turbine blades, due to the high density of seawater, among other factors. The complex combination of these loadings, as well as water ingress and associated composite laminate saturation, have significant implications for blade design, affecting overall device design, stability, scalability, energy production and cost-effectiveness. This study investigates the effect of seawater ingress on composite material properties, and the associated design and life expectancy of tidal turbine blades in operating conditions. The fatigue properties of dry and water-saturated glass fibre reinforced …
A Decision Support Tool For Building Integrated Renewable Energy Microgrids Connected To A Smart Grid, Damilola A. Asaleye, Michael D. Murphy, Michael Breen
A Decision Support Tool For Building Integrated Renewable Energy Microgrids Connected To A Smart Grid, Damilola A. Asaleye, Michael D. Murphy, Michael Breen
Publications
The objective of this study was to create a tool that will enable renewable energy microgrid (REμG) facility users to make informed decisions on the utilization of electrical power output from a building integrated REμG connected to a smart grid. A decision support tool for renewable energy microgrids (DSTREM) capable of predicting photovoltaic array and wind turbine power outputs was developed. The tool simulated users’ daily electricity consumption costs, avoided CO2 emissions and incurred monetary income relative to the usage of the building integrated REμG connected to the national electricity smart grid. DSTREM forecasted climate variables, which were used …
Heat Transfer Characteristics Of Ggbs Concrete In Fire, Ted Mckenna, Mark G. Richardson, Brian O’Rourke
Heat Transfer Characteristics Of Ggbs Concrete In Fire, Ted Mckenna, Mark G. Richardson, Brian O’Rourke
Publications
Partial replacement of high clinker content cements by Ground Granulated Blastfurnace Slag (GGBS) can reduce the carbon footprint of concrete, with consequent benefits in respect of sustainable construction. Furthermore a state-of-the-art report indicated that use of GGBS as a binder replacement may increase the fire resistance of concrete. If so this could lead to thinner sections in fire compartment elements, especially non-loadbearing walls, leading to further gains in respect of sustainable development. Concrete is considered an effective material in protecting against the detrimental effects of fire in structures. However, exposure to high temperatures can degrade concrete performance. Fire resistance performance …