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INPUT DATA:

ALGORITHMS:

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DATA I

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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 u_a(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.

Shropshire - outfall pipe - environmental science software

Derbyshire - basin modeling -

Aberdeen - modeling management - design modeling - systems modeling -

Lancashire - stormwater modeling - environmental science software

Oxfordshire - transport modeling -

Armagh - watershed modeling - plant modeling - project modeling -

Bangor - gis modeling - road modeling - urban modeling -

Birmingham - runoff modeling - wastewater modeling -

Bradford - river modeling - lake modeling - water resources modeling -

Bath - sewage outfall - pipe outfall - sewer outfall - environmental science software

Belfast - flood modeling - groundwater modeling - hydrology modeling -

Brighton & Hove - environmental modeling - wastewater outfall - simulation modeling -

Bristol - drainage outfall - storm water outfall - outfall stormwater - outfall design -

Oxford - turbulent modeling - thermal modeling - particle modeling -

Peterborough - contamination modeling - water quality modeling - area modeling -

Cambridge - outfall channel - pond outfall - fluent modeling -

Nottingham - outfall protection - outfall structure - modeling theory -

Plymouth - construction modeling - water pollution modeling - water modeling -

Portsmouth - river outfall -stream modeling - analysis modeling -

Salford - ocean outfall - outfall system - sewer outfall - environmental science software

Salisbury - wastewater outfall - marine outfall - sewage outfall -

Preston - outfall monitoring - surface modeling - sewer modeling -

Ripon - solution modeling - outfall construction - storm water modeling -

Essex - outfall canal - northern outfall - environmental science software

St David's - storm water pollution prevention - water air and soil pollution - prevention of water pollution -

Stirling - effect of water pollution - stop water pollution - storm water pollution prevention plan -

Stoke-on-Trent - storm water pollution -pictures of water pollution - water pollution causes -

Sunderland - federal water pollution control act - types of water pollution -

Swansea - npdes outfall - ocean outfall design - septic tank outfall -

Truro - people opposed to outfall pollution - outfall locations - outfall map -

Wakefield - outfall line - concrete outfall - ms4 outfall -

Wells - coastal plain outfall - what is an outfall - south bay ocean outfall -

Westminster - left bank outfall drain - cso outfall - adequate outfall -

Cheshire - heat simulation -

Worcestershire - annual water quality report -

Northamptonshire - water supply water quality regulations -

Durham - simulation theory -

Cambridge - surface simulation - treatment simulation - numerical simulation -

Nottingham - solution simulation - number simulation - thesis simulation -

Plymouth - water quality standards - water quality uk - improve water quality -

Portsmouth - water quality objectives - poor water quality - salinity and water quality -

Oxford - water quality management - water quality assessment - water quality monitoring -

Peterborough - water quality testing - drinking water quality - water quality modeling -

Preston - water quality - irrigation water quality - water supply water quality regulations 2000 -

Ripon - water quality rating - coastal water quality - water quality study -

Sheffield - fluid simulation - outfall stormwater - diffusion simulation -

St Albans - outfall structure - simulation dynamics - water simulation -

Salford - importance of water quality - water quality trading - surface water quality -

Salisbury - water quality for agriculture - water quality pollution - water quality improvement -

St David's - wastewater simulation - simulation analysis - outfall design -

Stirling - outfall channel - construction simulation - simulation modelling -

Swansea - particle simulation - solid simulation - simulation engineering -

Truro - outfall water - flow simulation - mathematical simulation -

Stoke-on-Trent - drainage outfall - fluid mechanics simulation - drainage simulation -

Sunderland - simulation modeling - hydrodynamic simulation - turbulence simulation -

Copyright © 2005 Canarina Algoritmos Numéricos, Sociedad Limitada Unipersonal CIF-B38803110 registered for electronic commerce in sheet TF-35526, sheet 1 of the volume 2.671 of the General Section, First Registration, Registro de la Propiedad Número 2 y Marcantil of , Spain. All rights reserved.