Energy in a Changing Climate
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Australian Government agencies are integrating disaster and climate resilience in their policies, programs and asset management. The Australian Government Disaster and Climate Resilience Reference Group is a coordinating group of senior officials which considers the risks and opportunities arising from climate change and natural disasters. CoastAdapt , released in May , is an online tool to support local governments and businesses to identify, assess and respond to climate risks in the coastal zone.
CoastAdapt supports local governments and businesses by:. Australian Government investment in NCCARF supported the organisation to generate and communicate the biophysical, social and economic information decision-makers need for successful adaptation to climate change. In May , the Australian Government announced an Adaptation Partnership bringing together expertise on climate resilience and adaptation to support climate risk management. Skip to main content. Home Topics Climate change Adapting to climate change.
Adapting to climate change. It is now proposed to use the knowledge gained to assess large-scale MCT prototypes. It has also been used in the validation of software tools developed by industry for the design and layout of such devices in arrays.
We are undertaking exploratory development of a totally novel wave energy converter, Anaconda. The Anaconda is essentially a rubber tube in the sea which is filled with water. It is closed at both ends and anchored at the head to the waves. It is squeezed or enlarged locally by pressure variations that run along its length due to the waves. Localised squeezing and enlarging effects permit energy to be extracted indirectly at a power take off PTO point using a turbine. The University of Southampton coordinates the research project Hylow which aims to optimize these machines, including their demonstration at prototype scale.
Currently, two machines are in operation in Germany and Bulgaria. Urban energy studies Energy generation through microgeneration technologies and energy conservation are extremely important in our attempt to reduce carbon emissions. Some key research highlights in the field of urban energy studies include: Particular topics being studied include: Disturbed-laminar flow over an oscillating cylinder: The flow around a cylinder oscillating at small amplitude in fluid otherwise at rest is subject to instabilities that trigger a remarkable regime of three-dimensional disturbed-laminar flow.
In the literature there are several accounts of experimental and theoretical studies of this problem, which is relevant to the hydrodynamic damping of large floating offshore structures. But there are conflicts between analytical predictions and laboratory measurements relating to the onset of three-dimensional flow, and resulting changes in the loading.
Recent experiments have enabled us to make some progress in understanding the causes of this disagreement. Splashing and bubble generation in breaking waves: Air bubbles and spray generated by breaking waves in the sea strongly influence many processes, including wave impact forces on coastal structures, ship resistance, white-water wakes, and air-sea exchanges of heat, momentum and gas.
Renewable Energy: A key climate solution
The ocean provides a sink of anthropogenic CO2 emissions and accurate estimates of bubble-mediated gas transfer are required for global climate modelling. Owing to the complexity of flow in breaking waves, fundamental studies on air entrainment and splashing are often conducted under laboratory conditions in facilities filled with fresh water.
But the results may not be directly applicable to oceanic breakers because considerable differences have been observed in some cases between fresh water and seawater in the total volumes and size distributions of bubbles entrained, and little is known about scale effects. Members recently completed measurements of time-dependent void fractions in the region of laboratory breaking waves in fresh water, artificial seawater, and natural seawater using novel fibre-optic probes.
Energy and Climate Change
The results demonstrate that total volume and distribution of entrained air and the spatial and temporal evolution of the bubble plumes are almost identical in all three water types, suggesting that observed differences between breaking waves in fresh water and in seawater are due more to scale than differences in physical, chemical and biological composition. Vortex-induced vibrations of risers: The offshore oil industry needs to know how to design tensioned pipes or 'risers' that reach from the oil rig at the sea surface almost vertically down to the sea bed, a vertical distance that may be as much as m.
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One of the problems is that over this length ocean currents can cause risers to vibrate like guitar strings. Vibrations can lead to metal fatigue and can also cause adjacent risers in an array to clash into each other. Both fatigue failures and clashing can have disastrous and expensive consequences. Understanding the mechanism of excitation is part of the solution of the problem of knowing how far apart the risers should be in order to avoid clashing. Following large-scale experiments in which we measured the response of a 13m-long model vertical riser in a non-uniform current, an ongoing project is concerned with the complicated fluid mechanics of two or more risers in close proximity simultaneously undergoing multimode responses over a wide range of frequencies.
Morphology, risk and adaptation This area of research integrates expertise from a range of disciplines in Engineering and the Environment and has strong collaborative links with the National Oceanographic Centre Southampton.
The assessment of erosion and flooding along the English Channel coast, including historic sea-level rise, wave climate and flooding, with a strong emphasis on the Solent. The development of a range of integrated tools and methods for assessing impacts of climate change and coastal management strategies. Examples include local-scale assessments e.
Adapting to climate change | Department of the Environment and Energy
A global ranking of port cities with high exposure to climate extremes. Climatic Change , 1 , Foundation-based flow acceleration structures for marine current energy converters.
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Pole-mounted horizontal axis micro-wind turbines: UK field trial findings and market size assessment. Energy Policy , 39 6 , Void fraction measurements and scale effects in breaking waves in freshwater and seawater. Coastal Engineering , 58 5 , A comparison of the main methods for estimating probabilities of extreme still water levels. Coastal Engineering , 57 9 , Assessing changes in extreme sea levels: Application to the English Channel, — Continental Shelf Research , 30 9 , Bubble size measurements in breaking waves using optical fibre phase detection probes.
Size-dependent mortality of migratory silver eels at a hydropower plant and implications for escapement to the sea. Freshwater Biology , 55 10 , Hydrodynamic performance of the Anaconda wavepower device. Researcher in Sustainable Energy. Lecturer in Water Resources.
Adapting to climate change
Lecturer in Energy and Buildings. Professor of Energy and Buildings. Professor of Ecological Engineering. Lecturer in Energy in the Built Environment.