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DESCAR:
INPUT DATA:
ALGORITHMS:
POLLUTANTS:
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Outfall data:
An outfall is a pollutant point source. The outfall is small if we compare it with the size of the area in which we are simulating (point source). If you click this button, the next dialog box is shown:
Depending on the used model, some data of the dialog box can be modified: Buoyant jet model or Stratified model (see calculation models).
Buoyant jet model: The necessary data in the Buoyant jet model is:
Effluent velocity ua (m/s): The average velocity of the pollutant effluent. It can be around 1 m/s.
Pollutant concentration (g/m3): The discharge concentration of the material of interest (pollutant or tracer) is defined as the excess concentration above any ambient concentration of that same material. 1g/m3=1ppm in water.
Water depth at discharge location (m): The actual water depth at the sumerged discharge location. For surface discharges it is the water depth at the channel entry location.
Discharge flow rate (m3/s): The discharge flow rate and the discharge velocity are related through the port cross-sectional area. (Flow rate)=(area)x(discharge velocity).
Discharge density (kg/m3): It is the density of the pollutant discharge.
Discharge conditions: There are three options: Vertical discharge, Horizontal discharge (A-type) and Horizontal discharge (B-type). In the vertical discharge, the discharge flow is perpendicular to the water surface. In the horizontal discharges (A and B), the discharge flow is parallel to the water surface. In the horizontal discharge case, we assume that the discharge vector is always perpendicular to current vector. That is to simplify the calculations. In the A-type, the flow vector points the South and the current vector points the East. In the B-type, the flow vector points the North and the current vector points the East.
Stratified model: The necessary data in the Stratified model is:
Pipe angle (0 to 360): It is the horizontal angle of discharge measured clockwise from the North (at the window top).
Diffusor length (m): The diffuser length is the distance from the first to the last port or nozzle.
1/T90 (1/horas): This coefficient considers the half life of the pollutant if this disappears by means of chemical reactions (non-conservative pollutant). This is the T90 for E.Coli. For towns with less than 10.000 inhabitants we can take a T90=2 hours (1/T90=0,5 hours-1) in the Mediterranean and T90=3 hours (1/T90=0,33 hours-1) in the Atlantic.
Number of openings: DESCAR allows for different types of discharge geometries. There are three options: Single port, Multiport diffuser and Separated ports. We have a multiport diffuser when the separation among the ports is less than 3% of the depth. We have Separated ports when the separation among the ports is bigger than 20% of the water depth.
INPUT DATA: Data I - Data II - Data III - Import - Commands - Graphs I - Graphs II
Canarina Algoritmos Numéricos, S.L.
Environmental software solutions
Software for environmental impact
Canary Islands, Spain
e-mail: contact us
European network on pollution · European Union
Member of MAPO: European network on Marine Pollution. Project
funded by the European Commission through the
6th Framework Programme for Research and Development
pollution of water
CANARINA: Home - Air pollution · DISPER - Noise pollution · CUSTIC - Water pollution · DESCAR - Contact us
DESCAR: DESCAR: water pollution - Data I - Algorithms I - Pollutants I
SOLUTIONS: DESCAR: water pollution - Advantages - Price
INPUT DATA: Data I - Data II - Data III - Import - Commands - Graphs I - Graphs II
ALGORITHMS: Algorithms I - Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI
POLLUTANTS: Pollutants I - Pollutants II - The sea I - The sea II - Pycnocline
DESCAR software solutions: This application has been used in great number of environmental reports, courses and water pollution studies in the last years. We currently have users in more than 10 countries.
Canaries: industrial water pollution - water pollution control - smog on the water study - water pollution causes report - water pollution control federation - outfall design and water pollution report in Santa Cruz - outfall design and water pollution report in Las Palmas - outfall modeling and water pollution study in Puerto - outfall design and water pollution report in isla baja - outfall design and water pollution report in el Hierro - outfall modeling and water pollution study in Lanzarote - outfall design and water pollution report in Fuerteventura - outfall design and water pollution report in las Américas - outfall modeling and water pollution study in La Palma
Balears: cause of water pollution course - pollution in the water report - water and soil pollution study - water pollution effects report - outfall design and water pollution report in Palma - outfall design and water pollution report in Mallorca - outfall modeling and water pollution study in Ibiza
Málaga: consequences of water pollution course - wastewater pollution report - effects of water pollution course -water pollution prevention - water pollution research - outfall design and water pollution report in Marbella - outfall design and water pollution report in Puerto - outfall modeling and water pollution study in Costa
Huelva: types of water pollution course - water and air pollution study - water pollution affecting report - eutrophication report - seawater study - outfall design and water pollution report in Marbella - outfall design and water pollution report in the harbor - outfall modeling and water pollution study in the coast pollution prevention in water
Granada: microbiological study - solid wastes report - heavy metals report - estuaries and turbidity study - outfall design and water pollution report in Almuñecar - outfall design and water pollution report in the harbor - outfall modeling and water pollution study in the coast
Asturias: biogeochemistry and bacteriological study - pentachlorophenol and dioxins report - vadose zone study - outfall design and water pollution report in Gijón - outfall design and water pollution report in the harbor - outfall modeling and water pollution study in the coast
Cantabria: nitrification report - outfall design and water pollution report in Santander - outfall design and water pollution report in the harbor - outfall modeling and water pollution study in the coast - outfall design and water pollution report in Laredo - outfall design and water pollution report in San Vicente - outfall modeling and water pollution study in Luarca
Galicia: best management practices report - estuaries and contaminated sites study - fluoridation and toxic substances report - risk assessment study - outfall design and water pollution report in La Coruña - outfall design and water pollution report in the harbor - outfall modeling and water pollution study in the coast - outfall design and water pollution report in Vigo - outfall design and water pollution report in Pontevedra - outfall modeling and water pollution study in Rías
Euskadi: suspended solids and biosolids study - dissolved oxygen and turbidity report - outfall design and water pollution report in Bilbao - outfall design and water pollution report in Baracaldo - outfall modeling and water pollution study in Sestao - outfall design and water pollution report in San Sebastián - outfall design and water pollution report in Getxo - outfall modeling and water pollution study in Santurce
Catalunya: organic matter report - pesticides and polycyclic aromatic hydrocarbons study - outfall design and water pollution report in Barcelona - outfall design and water pollution report in Tarragona - outfall modeling and water pollution study in GIrona - outfall design and water pollution report in Badalona - outfall design and water pollution report in the coast - outfall modeling and water pollution study in the harbor pollution prevention in water
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