Browsing Civil Engineering (Scholarly Articles) by Author "Nash, Stephen"
Now showing items 1-15 of 15
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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 ... -
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 ... -
Hydrodynamic modelling approaches to assess mechanisms affecting the structural performance and maintenance of vortex drops shaft structures
Carty, Alan; O’Neill, Colin; Nash, Stephen; Clifford, Eoghan; Mulligan, Sean (Taylor & Francis, 2019-07-29)Vortex drop shafts, a key hydraulic structure within modern day deep sewer conveyance systems, must be designed structurally to sustain performance and longevity of operating life under very energetic loading conditions. ... -
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. ... -
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 ... -
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. ... -
Regional modelling of the 21st century climate changes in the Irish Sea
Olbert, Agnieszka Indiana; Dabrowski, Tomasz; Nash, Stephen; Hartnett, Michael (Elsevier, 2012-06)An assessment of the complex evolution of climate change signals in the Irish Sea over the 21st century is presented in this paper. Potential impacts of climate change on the local hydrography are explored and interrelationships ... -
A review study of water quality index models and their use for assessing surface water quality
Uddin, Md Galal; Nash, Stephen; Olbert, Agnieszka Indiana (Elsevier, 2020-12-17)The water quality index (WQI) model is a popular tool for evaluating surface water quality. It uses aggregation techniques that allow conversion of extensive water quality data into a single value or index. Globally, the ... -
Tide-surge interactions and their effects on total sea levels
Olbert, Agnieszka Indiana; Nash, Stephen; Cunnane, Conleth; Hartnett, Michael (Springer Verlag, 2013-05-08)The research presented in this paper involves the application of the joint probability method to the estimation of extreme water levels resulting from astronomical tides and surge residuals and the investigation of the ... -
Tide-surge interactions and their effects on total sea levels in Irish coastal waters
Olbert, Agnieszka Indiana; Nash, Stephen; Cunnane, Conleth; Hartnett, Michael (Springer, 2013-06)The research presented in this paper involves the application of the joint probability method to the estimation of extreme water levels resulting from astronomical tides and surge residuals and the investigation of the ...