Browsing Civil Engineering by Author "Hartnett, Michael"
Now showing items 1-20 of 27
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Adaptive Mesh Multi-Scale Modelling of Tidal Hydraulics and Material Transport
Nash, Stephen; Hartnett, Michael (2011)Multi-scale modelling for structured meshes is achieved by nesting high resolution grids within lower resolution grids. By specifying high resolutions in areas of interest only, computational cost can be reduced. Adaptive ... -
An adaptive mesh solute transport model
Nash, Stephen; Hartnett, Michael (2009)An adaptive mesh solute transport model is presented. The adaptive mesh scheme is implemented in a one-way multiply nested version of the hydrobiological model DIVAST (Depth Integrated Velocity and Solute Transport). The ... -
Assessment of Tc-99 monitoring within the western Irish Sea using a numerical model
Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2010-05-26)Water circulation patterns and associated material transport within a highly dynamic system such as the Irish Sea are complex phenomena. Although Tc-99 monitoring programme undertaken by the Radiological Protection Institute ... -
Cyclonic circulation in the western Irish Sea in future climate
Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (International Association for Hydro-Environment Engineering and Research, 2011-07-01)The Irish Sea (IS) is a semi-enclosed body of water on the European Continental Shelf and the Western Irish Sea Gyre (WISG) is a characteristic phenomenon of the Sea. The gyre due to its significant effects on the circulation, ... -
Development of a nested coastal circulation model: boundary error reduction
Nash, Stephen; Hartnett, Michael (Elsevier, 2014-03)Numerical models have a valuable role to play in the sustainable management of coastal waters but accurate simulation of land/sea interactions, particularly in areas of complex coastlines, requires the use of high spatial ... -
Development of high-resolution multi-scale modelling system for simulation of coastal-fluvial urban flooding
Comer, Joanne; Olbert, Agnieszka Indiana; Nash, Stephen; Hartnett, Michael (Copernicus Publications, 2017-02-16)Urban developments in coastal zones are often exposed to natural hazards such as flooding. In this research, a state-of-the-art, multi-scale nested flood (MSN_Flood) model is applied to simulate complex coastal-fluvial ... -
The effects of array configuration on the hydro-environmental impacts of tidal turbines
Fallon, David; Hartnett, Michael; Olbert, Agnieszka Indiana; Nash, Stephen (Elsevier, 2014-04)The economic viability of tidal turbines will require the deployment of multiple devices in array formations in a manner analogous to wind farms. This research investigates the effects of the configuration of a tidal turbine ... -
Effects of complex hydrodynamic processes on the horizontal and vertical distribution of Tc-99 in the Irish Sea
Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2010-10-14)The increased discharge of Tc-99 from the Sellafield plant following the commissioning of the Enhance Actinide Removal Plant in 1994 was reflected in higher Tc-99 activity concentrations over much of the Irish Sea The ... -
High-resolution multi-scale modelling of coastal flooding due to tides, storm surges and rivers inflows: A Cork city example
Olbert, Agnieszka Indiana; Comer, Joanne; Nash, Stephen; Hartnett, Michael (Elsevier, 2017-01-31)This paper demonstrates the capability of a new state-of-the-art flood modelling system consisting of multiple nested models to simulate urban coastal flood inundation. A flood event in Cork City, Ireland which occurred ... -
An integrated approach to trophic assessment of coastal waters incorporating measurement, modelling and water quality classification
Hartnett, Michael; Nash, Stephen; Olbert, Agnieszka Indiana (2012)Various protocols have been developed for trophic assessment of coastal waters but most incorporate single value compliance criteria for water quality parameters which, in reality, exhibit significant spatial variation. ... -
Interactions, mechanisms and impact of future coastal urban flooding. A case study of Cork city
Kirkpatrick, Jennifer Isabel Munro; Nash, Stephen; Hartnett, Michael; Comer, Joanne; Olbert, Agnieszka Indiana (Hydrology Ireland, 2020-11-17)In coastal floodplains, high river flows and high coastal water levels can result in extensive flooding. Mechanisms of flooding play a crucial role in flood characteristics with distinctive differences in flood wave ... -
Irish estuaries: Water quality status and monitoring implications under the water framework directive
Hartnett, Michael; Nash, Stephen (2011)The status of water quality of Irish estuaries is reviewed; this sheds light on the rationale behind the design of the national monitoring programme. Relative to other EU Member States, Ireland's coastal monitoring programme ... -
Long-term inter-annual variability of a cyclonic gyre in the western Irish Sea
Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2011-05-26)The western Irish Sea gyre (WISG) is a cyclonic baroclinic flow around a dome of stagnant water which develops each year during the heating season in the western Irish Sea. Research was carried out to determine long-term ... -
Mechanisms of flooding in Cork City
Olbert, Agnieszka Indiana; Comer, Joanne; Nash, Stephen; Hartnett, Michael (International Association of Hydrological Sciences, 2015-11-17)Flooding is one of the most frequent and devastating natural disasters. Many urban developments are located in estuaries where river flow and sea water merge. Cork City situated in the River Lee estuary frequently subject ... -
Modelling nutrient and chlorophyll_a dynamics in an Irish brackish waterbody
Hartnett, Michael; Nash, Stephen (Elsevier, 2004-01)This paper presents aspects of a research investigation into nutrient fluxes into and out of an important Irish estuary, Wexford Harbour, located in the southeast of Ireland. Details of the methodology applied, the data ... -
Modelling nutrients and chlorophyll-a dynamics in an Irish brackish waterbody
Hartnett, Michael; Nash, Stephen (Elsevier, 2004)This paper presents aspects of a research investigation into nutrient fluxes into and out of an important Irish estuary, Wexford Harbour, located in the southeast of Ireland. Details of the methodology applied, the data ... -
Modelling phytoplankton dynamics in a complex estuarine system
Nash, Stephen; Hartnett, Michael; Dabrowski, Tomasz (2011)The primary objective of this research was to develop a generic methodology for numerical modelling of the water quality within estuarine systems; in particular, this research focused on modelling nutrient dynamics and ... -
Nested circulation modelling of inter-tidal zones: details of a nesting approach incorporating moving boundaries
Nash, Stephen; Hartnett, Michael (2010)Nested circulation models developed to date either exclude the flooding and drying process or prohibit flooding and drying of nested boundaries; they are therefore ill-suited to the accurate modelling of inter-tidal areas. ... -
A nested hydrodynamic model incorporating flooding and drying
Nash, Stephen; Hartnett, Michael (2009)A one-way nested version of the hydrobiological model DIVAST (Depth Integrated Velocity and Solute Transport) is introduced. The nested model allows flooding and drying of intertidal areas, a process often present in areas ... -
Nutrient dynamics in Cork Harbour
Nash, Stephen; Hartnett, Michael (2005)Estuaries are commonly characterised by high productivity due to frequent if not continuous inputs of nutrients from domestic and industrial discharge effluents and from freshwater and marine sources. These forms of nutrient ...