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Full-Text Articles in Physical Sciences and Mathematics
Influence Of The Rainfall Movement On The Required Volume Of Storage Reservoirs, Maciej Mrowiec
Influence Of The Rainfall Movement On The Required Volume Of Storage Reservoirs, Maciej Mrowiec
International Conference on Hydroinformatics
Temporal and spatial variability of rainfalls have a significant impact on the operation of urban drainage systems. Stormwater retention reservoirs are particularly sensitive to these variations. This paper presents the results of research on the impact of the direction and speed of rainfall movement over an urban catchment (of total area 560ha) on required volume of the retention reservoir. Calibrated hydrodynamic model has been used to simulate rainstorms movement (software: SWMM5). The whole catchment was divided into sectors of 600´600m, which facilitated the calculation of time shift between sectors for assumed speeds of rainfall movement (vop= 2, 5 and 10 …
Hydrodynamic Simulations Of Vacuum-Driven Storage Tanks, Maciej Mrowiec, Oliwia Kochanska
Hydrodynamic Simulations Of Vacuum-Driven Storage Tanks, Maciej Mrowiec, Oliwia Kochanska
International Conference on Hydroinformatics
As a result of urbanization, stormwater runoff flow rates and volumes are significantly increased due to increasing impervious land cover and the decreased availability of depression storage. Storage tanks are the basic devices to efficiently control the flow rate in drainage systems during wet weather. Presented in the paper conception of vacuum-driven detention tanks allows to increase the storage capacity by usage of space above the free surface water elevation at the inlet channel. Partial vacuum storage makes possible to gain cost savings by reduction of both the horizontal area of the detention tank and necessary depth of foundations. Simulation …
Numerical Modeling Of Flow In The Vertical Drop With Inverse Apron, Ramin Mansouri, Alinaghi Ziaei
Numerical Modeling Of Flow In The Vertical Drop With Inverse Apron, Ramin Mansouri, Alinaghi Ziaei
International Conference on Hydroinformatics
Drops are hydraulic structures that are commonly used in irrigation and waste water collection networks. A vertical drop balances the elevation difference between the channel slope and ground slope. Earlier investigations on this structure have mainly focused on experimental studies of the hydraulic characteristics. In this paper, the hydraulic characteristics of vertical drops with inverse apron have been studied numerically with used of Fluent software to solve the finite volume method. The volume of fluid (volume of fluid) was used for modeling the free surface. Flow characteristics such as downstream depth, pool depth and energy loss were calculated and compared …
Short-Term Evaporation Estimating From Complex Small Lakes In Arid And Semi-Arid Regions, Ali Abbasi, Nick Van De Giesen
Short-Term Evaporation Estimating From Complex Small Lakes In Arid And Semi-Arid Regions, Ali Abbasi, Nick Van De Giesen
International Conference on Hydroinformatics
In many parts of the world, the available water resources are now being used close to their limits. Global climate change, the increasing population of the earth and ever-increasing standards of living and consequent growing demand of water are bringing water sustainability into sharp focus. Evaporation as a major component of the hydrologic cycle, is the largest one of water loss from lakes especially in arid and semi-arid regions. Because of lacking of understanding of the thermodynamics of atmospheric boundary layer(ABL) and heat exchange between the water surface and atmosphere, an accurate estimation of evaporation from water surfaces is almost …
Hydrogeological Modelling Of Contaminated Area In Tegal, Indonesia, Sapari Dwi Hadian, Syarif Ali, Rifky Meisa, Nursiyam Barkah
Hydrogeological Modelling Of Contaminated Area In Tegal, Indonesia, Sapari Dwi Hadian, Syarif Ali, Rifky Meisa, Nursiyam Barkah
International Conference on Hydroinformatics
Small and Medium Enterprises metal smelting in Tegal has been existed since more than 50 years ago. This metal smelting process produces heavy metal waste such as zinc, iron, aluminum and copper which exceed the limit and contaminate the water. These hazardous and toxic wastes are disposed directly into the environment without adequate treatment to remove harmful compounds, thus alleged to have a high level of pollution to groundwater and surface water. The aim of the study is to obtain geological and hydrogeological condition of the study area, so that would be obtained the groundwater impurity pattern in the study …
Genetic Programming For Cellular Automata Urban Inundation Modelling, Mike J. Gibson, Edward C. Keedwell, Dragan A. Savić
Genetic Programming For Cellular Automata Urban Inundation Modelling, Mike J. Gibson, Edward C. Keedwell, Dragan A. Savić
International Conference on Hydroinformatics
Recent advances in Cellular Automata (CA) represent a new, computationally efficient method of simulating flooding in urban areas. A number of recent publications in this field have shown that CAs can be much more computationally efficient than methods than using standard shallow water equations (Saint Venant/Navier-Stokes equations). CAs operate using local state-transition rules that determine the progression of the flow from one cell in the grid to another cell, in many publications the Manning’s Formula is used as a simplified local state transition rule. Through the distributed interactions of the CA, computationally simplified urban flooding can be processed, although these …
Drihm - An Infrastructure To Advance Hydro-Meteorological Research, Bert Jagers, Antonio Parodi, Michael Schiffers, Nils Otto Vor Dem Gentschen Felde, Christian Straube, Andrea Clematis, Daniele D'Agostino, Quillon Harpham
Drihm - An Infrastructure To Advance Hydro-Meteorological Research, Bert Jagers, Antonio Parodi, Michael Schiffers, Nils Otto Vor Dem Gentschen Felde, Christian Straube, Andrea Clematis, Daniele D'Agostino, Quillon Harpham
International Conference on Hydroinformatics
One of the main challenges in hydro-meteorological research (HMR) is predicting the impact of weather and climate changes on the environment, society and economy, including local severe hazards such as floods and landslides. At the heart of this challenge lies the ability to have easy access to hydro-meteorological data and models, and facilitate the collaboration across discipline boundaries. Within the DRIHM project (Distributed Research Infrastructure for Hydro-Meteorology, www.drihm.eu, EC funded FP7 project 2011-2015) we develop a prototype e-Science environment to facilitate this collaboration and provide end-to-end HMR services (models, datasets, and post-processing tools) at the European level, with the ability …
High Resolution Bathymetric Lidar Data To Hydraulic - Modelling A Mountain Stream By Bathymetric Lidar Data, Wolfgang Dobler, Frank Steinbacher, Ramona Baran, Markus Aufleger
High Resolution Bathymetric Lidar Data To Hydraulic - Modelling A Mountain Stream By Bathymetric Lidar Data, Wolfgang Dobler, Frank Steinbacher, Ramona Baran, Markus Aufleger
International Conference on Hydroinformatics
Knowledge about the hydraulic situation in a mountain torrent is relevant to quantify flood risks, to study sediment transport and to assess the waterbodies’ ecology. To conduct reliable calculations, high-quality terrain data of riverbeds, riverbanks and floodplains are required. Typically, digital terrain models (DTMs) of floodplains are derived from classical airborne laserscanning (red wavelength) together with terrestrial surveys along riverbeds and riverbanks. Usually these are restricted to a limited number of cross sections. The terrestrial surveys are necessary because those laser systems cannot penetrate through the water column of the observed waterbodies. Consequently, data for the geometry of riverbeds and …
Experimental Investigation Of Flow-Interactions Between Above And Below Ground Drainage Systems Through A Manhole, Matteo Rubinato, James Shucksmith, Adrian J. Saul
Experimental Investigation Of Flow-Interactions Between Above And Below Ground Drainage Systems Through A Manhole, Matteo Rubinato, James Shucksmith, Adrian J. Saul
International Conference on Hydroinformatics
The frequency, magnitude and impact of pluvial flooding events both in the UK and worldwide is forecast to increase due to: climate change (Butler and Davies 2011), the effects of urbanisation and urban creep (Semadeni‐Davies et al 2008) as well as aging drainage infrastructure (Ashley et al. 2004). Pluvial flood models (e.g. Leandro et al. 2008) are increasingly being used to assess flood risk, develop asset investment strategies and develop surface water management plans. However due to the nature of urban flood events, it is very difficult to calibrate and validate such pluvial flood models. In particular the rate of …
An Integrated Approach To Simulate Flooding Due To River Dike Breach, Yohannis Birhanu Tadesse, Peter Fröhle
An Integrated Approach To Simulate Flooding Due To River Dike Breach, Yohannis Birhanu Tadesse, Peter Fröhle
International Conference on Hydroinformatics
This paper presents an integrated approach that enables the simultaneous modeling of dike breaching process and flood propagation. The dike breaching process is modelled with a simple breach model implemented into a 2-dimensional hydrodynamic flood model – Telemac2D. Telemac2D models the propagation of the arising flood into the hinterland. The breach model generalizes dike breaching process in two general stages. In the first stage, dike breaching is predominantly vertical with limited lateral breach growth; and in the second stage breach grows only laterally. The breach model requires breach location, breach duration, and length and axis of dike affected by the …
Numerical Simulation Of 3d Flow In Right-Angled Confluences With Bed Elevation Discordance In The Main River, Dejana Đorđević
Numerical Simulation Of 3d Flow In Right-Angled Confluences With Bed Elevation Discordance In The Main River, Dejana Đorđević
International Conference on Hydroinformatics
Two major morphological phenomena in alluvial river confluences are the development of an avalanche face or faces at the entrance of one or both converging channels to the confluence, due to deposition of coarser sediments, and deepening of the scour hole in the post-confluence channel. The development of an avalanche face creates the difference in bed elevations between incoming and outgoing channels. Laboratory experiments in movable bed models of confluences showed, and bathimetric surveys in field confluences confirmed, that avalanche faces develop in both converging channels only in alluvial river confluences with large junction angles (α ≥ 45o). The effect …
Development Of An Information Mapping Framework To Couple Surface Flow And Subsurface Hydraulic Models, Kashif Shaad, Paolo Burlando
Development Of An Information Mapping Framework To Couple Surface Flow And Subsurface Hydraulic Models, Kashif Shaad, Paolo Burlando
International Conference on Hydroinformatics
Here we present the outline of an information mapping framework that allows coupling of existing surface and subsurface hydraulic modelling domains and can provide an alternate to specialized fully integrated coupled modelling codes. The flexibility of the framework intends to allow selecting solvers with assumptions and representations in-line with the requirements of the area being modelled as well as reusing the expertise that has gone into building the decoupled models as part of the respective surface flow or groundwater study. We focus on 2d representation of surface hydraulics and 3d representation of subsurface flow to form the basis of the …
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
Optimal Placement Of Metering Devices For Multiple Purposes, Ramon Perez, Gerard Sanz, Josep Cuguero, Miquel Angel Cuguero
International Conference on Hydroinformatics
Monitoring devices installed in a huge system like a water network imply a high cost. This cost includes installation and maintenance. Thus the placement of these devices must be optimal. The optimal sensor placement is an issue that comes up in many innovation projects in water networks. The use of models even if the final application does not use them may be crucial in such process. Nevertheless the optimality of the placement may depend highly on the final use of these sensors. In general a better placement may imply a more specific use of the information. This work studies the …
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
Comparison Of Demand Pattern Calibration In Water Distribution Networks With Geographic And Non-Geographic Parameterization, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
Demands are one of the most uncertain parameters in a water distribution network model. A good calibration of the model demands leads to better solutions when using the model for any purpose. A demand pattern calibration methodology that uses a priori information has been developed for calibrating the behaviour of demand groups. Generally, the behaviours of demands in cities are mixed all over the network, contrary to smaller villages where demands are clearly sectorised in residential neighbourhoods, commercial zones and industrial sectors. Demand pattern calibration has a final use for leakage detection and isolation. Detecting a leakage in a pattern …
2-D And 3-D Numerical Modeling Of Dam Break Waves Over Moveable Beds, Kamal El Kadi Abderrezzak, Riadh Ata, Pablo Tassi, Dongchen Wang, Jean-Michel Hervouet, Andres Die Moran
2-D And 3-D Numerical Modeling Of Dam Break Waves Over Moveable Beds, Kamal El Kadi Abderrezzak, Riadh Ata, Pablo Tassi, Dongchen Wang, Jean-Michel Hervouet, Andres Die Moran
International Conference on Hydroinformatics
Dam-break waves over movable beds are multi-physical processes that involve rapidly varying flows, intense sediment transport and significant alteration in bed morphology. In turn, this change in morphology may strongly affect the maximum water levels and arrival time of the wave front, which are the main characteristics to consider for use in risk assessment. In this paper, we report numerical simulations of dam-break waves induced sediment transport using the open source Telemac-Mascaret modeling system (www.opentelemac.org). The 3D hydrodynamic model, TELEMAC-3D, and the 2D depth-averaged hydrodynamic model, TELEMAC-2D, are used. Both models are internally coupled with the sediment transport module SISYPHE. …
Modeling The Effects Sea Level Rise On Flooding In The Lower Niger River, Zahrah Naankwat Musa, Ioana Popescu, Arthur E. Mynett
Modeling The Effects Sea Level Rise On Flooding In The Lower Niger River, Zahrah Naankwat Musa, Ioana Popescu, Arthur E. Mynett
International Conference on Hydroinformatics
The Niger River bifurcates into the Nun and Forcados rivers as it flows through the Niger delta, with the Forcados River taking 46% of the discharge and the Nun River taking 54%. Within the last fifteen years the Niger delta coastal zone has experienced peak floods between September and October due to intense rains from upstream. Many studies including the United Nations Framework on Convention on Climate Change (UNFCCC) indicate that the Niger delta region could be inundated with water due to the effects of climate change. According to local experts, the Niger delta is subsiding at over 25mm/annum; a …
Design And Hydraulic Performance Of A Novel Hydraulic Ram Pump, Kailin Yang, Jiazhen Li, Yongxin Guo, Xinlei Guo, Hui Fu, Tao Wang
Design And Hydraulic Performance Of A Novel Hydraulic Ram Pump, Kailin Yang, Jiazhen Li, Yongxin Guo, Xinlei Guo, Hui Fu, Tao Wang
International Conference on Hydroinformatics
The automatic hydraulic ram pump (hydram) is a unique device that utilizes energy from a falling quantity of water as the driving power to pump some of the water to a head much higher than the source. The hydraulic ram is structurally simple, consisting of only two moving parts: the waste valve and the delivery (check) valve. There is also an air chamber with an air or snifter valve. With a continuous flow of water, the hydram will operate automatically and continuously with no other external energy. Hydrams are suitable for small-scale water supply schemes supplying farm- houses and isolated …
Regional Versus Physically-Based Methods For Flood Inundation Modelling In Data Scarce Areas: An Application To The Blue Nile, Kun Yan, Florian Pappenberger, Yakob M. Umer, Dimitri P. Solomatine, Giuliano Di Baldassarre
Regional Versus Physically-Based Methods For Flood Inundation Modelling In Data Scarce Areas: An Application To The Blue Nile, Kun Yan, Florian Pappenberger, Yakob M. Umer, Dimitri P. Solomatine, Giuliano Di Baldassarre
International Conference on Hydroinformatics
One of the main obstacles in mapping flood hazard in data scarce areas is the difficulty in estimating the design flood, i.e. river discharge corresponding to a given return period. This exercise can be carried out using regionalization techniques, which are based on flood data of regions with similar hydro-climatic conditions, or employing physically based model cascades. In this context, we compared the flood extents maps derived for a river reach of the Blue Nile following two alternative methods: i) regional envelope curve (REC), whereby design floods (e.g. 1-in-20 and 1-in-100 year flood peaks) are derived from African envelope curves …
Numerical Modeling Of Flow And Sediment Transport Within The Lower Reaches Of The Athabasca River: A Case Study, Shalini Kashyap, Ahmad Shakibaei, Ali Oveisy, Yonas Dibike, Terry Prowse, Droppo Ian
Numerical Modeling Of Flow And Sediment Transport Within The Lower Reaches Of The Athabasca River: A Case Study, Shalini Kashyap, Ahmad Shakibaei, Ali Oveisy, Yonas Dibike, Terry Prowse, Droppo Ian
International Conference on Hydroinformatics
This study investigates flow and sediment transport patterns within the lower reaches of the Athabasca River (~250 km) in Alberta, Canada, which are characterized by complex bathymetry, regions of high tortuosity, and variable discharges and bed slopes. Sediment within this reach is primarily sand and gravel, but there is also a high percentage (>10%) of cohesive clay with unique settling properties. A combination of 1D and 2D regional numerical modeling is used here to predict hydrodynamics of the flow and transport of suspended sediment. Bathymetry measurements were obtained from a combination of high resolution 3D Geoswath and ADCP surveys, …
Hydropower Energy Simulation Using Mike 11 Model; A Case Study In South Germany's Small Run-Of-River Hydropower Plants, Frezer Seid Awol, Tobias Drueckler, Silvia Matz
Hydropower Energy Simulation Using Mike 11 Model; A Case Study In South Germany's Small Run-Of-River Hydropower Plants, Frezer Seid Awol, Tobias Drueckler, Silvia Matz
International Conference on Hydroinformatics
Renewable energy production is a basic supplement to stabilize rapidly increasing global energy demand and skyrocketing energy price as well as to balance the fluctuation of supply from non-renewable energy sources at electrical grid hubs. The European energy traders, government and private company energy providers and other stakeholders have been, since recently, a major beneficiary, customer and clients of Hydropower simulation solutions. The relationship between rainfall-runoff model outputs and energy productions of hydropower plants has not been clearly studied. In this research, association of rainfall, catchment characteristics, river network and runoff with energy production of a particular hydropower station is …
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
Parameterization And Sampling Design For Water Distribution Networks Demand Calibration Using The Singular Value Decomposition: Application To A Real Network, Gerard Sanz, Ramon Perez
International Conference on Hydroinformatics
The availability of a good hydraulic model increases the reliability of the results of methodologies using it. Thus the calibration of the model is a previous step that has to be done. The most uncertain parameters of the model are demands due to their constant variability. However, calibrating these demands requires a high computational cost that can be reduced by redefining the unknown parameters from demands to demand patterns. Besides, the number and location of the used sensors is highly correlated with the definition of such patterns. This paper presents a methodology for parameterizing and selecting sensors using the information …
Modeling Shallow Water Flow And Transport Processes With Small Water Depths Using The Hydroinformatics Modelling System, Ilhan Özgen, Franz Simons, Jiaheng Zhao, Reinhard Hinkelmann
Modeling Shallow Water Flow And Transport Processes With Small Water Depths Using The Hydroinformatics Modelling System, Ilhan Özgen, Franz Simons, Jiaheng Zhao, Reinhard Hinkelmann
International Conference on Hydroinformatics
In hydro- and environmental systems modelling, there are several application cases where very small water depths occur, for example rainfall and runoff in natural or urban catchments, possibly associated with tracer transport. In these cases, the water depth may be in the range of millimeters to a few centimeters. The numerical simulation of the associated processes is complex, therefore robust numerical schemes are required. Two test cases using high resolution topography data are investigated with the Hydroinformatics Modelling System (HMS). In the first case, the influence of microtopography and local depressions were analyzed in an idealized urban catchment; both had …
Comparison Of 2d Numerical Schemes For Modelling Supercritical And Transcritical Flows Along Urban Floodplains, Yared Abayneh Abebe, Solomon D. Seyoum, Zoran Vojinović, Roland K. Price
Comparison Of 2d Numerical Schemes For Modelling Supercritical And Transcritical Flows Along Urban Floodplains, Yared Abayneh Abebe, Solomon D. Seyoum, Zoran Vojinović, Roland K. Price
International Conference on Hydroinformatics
Urban floodplains usually have irregular geometry due to different obstacles, urban infrastructures and slope conditions. This may change the flow regime from subcritical to supercritical flow conditions, and vice versa. Implementation of the full momentum equation in 2D shallow water equations (SWEs) is not trivial in mixed flow conditions as subcritical and supercritical flows require different boundary conditions and hence different solution algorithms. Some models ignore the convective acceleration term (CAT) to simplify implementation of the momentum equation for mixed flow conditions. This work tried to investigate the effect of neglecting CATs by testing two 2D models which implement - …
Next Generation Hydro Software, Gennadii Donchyts, Fedor Baart, Arthur Van Dam, Erik De Goede, Joost Icke, Hans Van Putten
Next Generation Hydro Software, Gennadii Donchyts, Fedor Baart, Arthur Van Dam, Erik De Goede, Joost Icke, Hans Van Putten
International Conference on Hydroinformatics
A few years ago Deltares started a large multidisciplinary project named Next Generation Hydro Software. The main focus of the project is to improve, harmonize and integrate existing hydro software that has been developed throughout the years. Important technological innovations include development of the new computational core D-Flow Flexible Mesh, as well as the user-friendly, open modelling environment Delta Shell. The project involves more than 40 scientists and software engineers. The new integrated system will allow both water managers and modellers to do their work better and faster. The unique characteristic of the project is that it focuses on the …
Probabilistic Integrated Urban Inundation Modeling Using Sequential Data Assimilation, Seong Jin Noh, Seungsoo Lee, Hyunjun Kim
Probabilistic Integrated Urban Inundation Modeling Using Sequential Data Assimilation, Seong Jin Noh, Seungsoo Lee, Hyunjun Kim
International Conference on Hydroinformatics
Urban inundation due to climate change and heavy rainfall is one of the most common natural disasters worldwide. However, it is still insufficient to obtain accurate urban inundation predictions due to various uncertainties coming from input forcing data, model parameters, and observations. Despite of numerous sophisticated data assimilation algorithms proposed to increase the certainty of predictions, there have been few attempts to combine data assimilation with integrated inundation models due to expensive computations and computational instability such as breach of conservation and momentum equations in the updating procedure. In this study, we propose a probabilistic integrated urban inundation modeling scheme …
A Two Phase Numerical Model For The Water Injection Dredging (Wid) Technology: An Unified Formulation For Continuum Mechanic, Dan Nguyen, Miguel Uh Zapata, Georges Gauthier, Philippe Gondret, Damien Pham Van Bang
A Two Phase Numerical Model For The Water Injection Dredging (Wid) Technology: An Unified Formulation For Continuum Mechanic, Dan Nguyen, Miguel Uh Zapata, Georges Gauthier, Philippe Gondret, Damien Pham Van Bang
International Conference on Hydroinformatics
Accurate simulation of the sediment processes at the vicinity of the sediment bed/water interface is still very difficult because of the multi-physic character of the problem. A soil is a continuum and porous media having solid properties such as elasticity and plasticity. It is usually considered as impermeable boundary which could evolve through erosion and deposition fluxes. Flow characteristics close to the liquid-bed interface are poorly described by soil mechanics and rheological characteristics of the soil are usually neglected by fluid mechanics. In order to account for the flow domain as a whole, extending from the substratum up to the …
A Probabilistic Tsunami Model For Chile, Vaclav Rara, Cristina Arango, Petr Puncochar, Goran Trendafiloski, Chris Ewing, Adam Podlaha, Deepak Vatvani, Maarten Van Ormondt
A Probabilistic Tsunami Model For Chile, Vaclav Rara, Cristina Arango, Petr Puncochar, Goran Trendafiloski, Chris Ewing, Adam Podlaha, Deepak Vatvani, Maarten Van Ormondt
International Conference on Hydroinformatics
In disaster-prone regions such as Chile, catastrophe models help (re)insurers to understand and quantify the risks facing their businesses. The 2010 (M8.8) Maule (Chile) earthquake highlighted the need for quantifying losses not only from primary perils (in this case earthquake) but also from secondary perils such as tsunamis, which contribute to the overall event losses but are not often modelled. This paper presents a new catastrophe model for Chile developed by Impact Forecasting (IF) in collaboration with Aon Benfield Research partners. The model has the capability to model losses due to earthquake (ground-shaking) and induced tsunamis along the Chilean coast …
Evaluating Alternative Water Allocation Policies Among Competing Users In Bow River Basin, Alberta, Canada, Wei Xu, Nader Khoshroo, Henning Bjornlund
Evaluating Alternative Water Allocation Policies Among Competing Users In Bow River Basin, Alberta, Canada, Wei Xu, Nader Khoshroo, Henning Bjornlund
International Conference on Hydroinformatics
Demand for water from rivers and aquifers for consumptive use has grown greatly due to population and economic growth and changing lifestyle and dietary habits. Consequently, aquatic ecosystems, especially in semi-arid and arid regions across the world, suffer adverse environmental impacts of over-extraction. Historically, Alberta’s water allocation system has been based on the first-in-time-first-in-right (FITFIR) system, granting the preference to the licensees based on the seniority of their licenses. In recent years, scientists, policy makers, and water users have raised questions whether FITFIR will continue to be the most appropriate allocation system to manage increasing scarce water resources in Alberta. …
Optimizing Maritime Terminal Infrastructure Subject To Uncertainty, Michael John Francis Rustell, Aurora Orsini, Soon-Thiam Khu, Yaochu Jin, Ben Gouldby
Optimizing Maritime Terminal Infrastructure Subject To Uncertainty, Michael John Francis Rustell, Aurora Orsini, Soon-Thiam Khu, Yaochu Jin, Ben Gouldby
International Conference on Hydroinformatics
This paper describes a hydroinformatic model for generating a Pareto set of LNG terminal layouts that are subject to uncertainty using a multi-objective genetic algorithm. The NSGAII is used to select parameters that propagate through a bespoke LNG terminal design algorithm which includes a Monte Carlo simulator to estimate the uncertainty in each concept. This allows the trade-off between cost and risk to be explored at the earliest stage of design. The results of a case study indicate that nearshore terminals typically have lower capital costs but higher maintenance costs and more uncertainty. The paper concludes that in the example …
Effects Of 2d And 1d Modeling On Mapping Aquatic Habitat Quality, Rohan Benjankar, Daniele Tonina, Jim Mckean
Effects Of 2d And 1d Modeling On Mapping Aquatic Habitat Quality, Rohan Benjankar, Daniele Tonina, Jim Mckean
International Conference on Hydroinformatics
The distribution of aquatic habitat at the organism scale, i.e. 1 by 1m or smaller is typically predicted from local physical characteristics of stream flow, bed, banks and sediment characteristics and a set of biological preference curves. The flow properties are typically predicted with numerical modeling whereas stream bed and bank characteristics defined from interpolated DEM generated by topographical surveys and field observations. Information on the effects of flow properties and streambed morphology due to numerical modeling dimensionality on aquatic habitat modeling is limited. Two-dimensional (2D) modeling is becoming the most popular method to map micro-habitat but its application is …