DESCAR software: hydraulic modeling

CANARINA:

DESCAR:

Graphs II Algorithms I Algorithms II Algorithms III Algorithms IV Algorithms V Algorithms VI Algorithms VII Pollutants I Pollutants II

The sea I

The sea II

Google maps

GIS

DESCAR software: algorithms III

2. Stratified model

This model is official in Spain and it follows Orden del 13 de Julio de 1993 del Ministerio de Obras Públicas y Transportes del Reino de ESPAÑA, B.O.E. Martes 27 de Julio de 1993, página 22861, I. Disposiciones generales. Proyecto de conducciones de vertidos desde tierra al mar.

The stratification phenomena is the existence of two homogeneous water layers and separated by a thin thermocline layer. In such a case, we can say that the water is stratified. There is no exchange of pollutants through this picnocline layer. In case we suppose that a picnocline layer exists, we will be able to check the stability by means of the application of the following equation:

[u₀² B+ U_a² H]/[(u₀ B g’)^2/3 H] <0.54

u₀=effluent velocity (m/s)

H=water depth at discharge position (m)

g’=reduced gravity acceleration (m/s²), g’=g(ρ_a- ρ₀)/ ρ₀

g=9,81m/s^2 (gravity acceleration)

ρ_a=water density (Kg/m³)

ρ₀=effluent density (Kg/m³)

Typical values (pollutants):

Organic matter as DBO5 - 350g/m3

Suspended matter - 600g/m3

E. Coli - 10¹² /m3

N2 (total) - 30 gN/m3

Effluent velocity - entre 0.6 y 0.8 m/s

Port diameter - 6cm

Dispersion coefficients:

Horizontal dispersion: K_y(m²/s)=3x10^-5 B^4/3.

B=initial plume width(m)

Vertical dispersion: K_z(m²/s)=4x10^-3 U_a e

e= thickness of the mixing layer

U_a=horizontal ambient velocity (m/s)

Algorithms I - Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI - Algorithms VII

Canarina Algoritmos Numéricos, S.L.

Environmental software · environmental software solutions

Canary Islands, Spain

e-mail: Contact us

European Union · network on Pollution

Member of MAPO: European network on Marine Pollution.

Project funded by the European Commission

through the 6th Framework Programme for Research and Development

DESCAR: water pollution - Solutions - Advantages - Price - Data I - Data II - Advantages - Temporal average - Import - Commands - Graphs I - Graphs II - Algorithms I - Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI - Algorithms VII - Pollutants I - Pollutants II - The sea I - The sea II - Google maps - GIS

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. Water pollution reports:

Devon - hydraulic design - hydraulic engineering -

Lincolnshire - marine pollution control -

Cumbria - urban modeling - river modeling -

North Yorkshire - preventing marine pollution - pollution effects on marine life -

Norfolk - heat transfer modeling -

Suffolk - types of pollution - animal pollution -

Kent - national contingency plan for marine pollution - pollution and marine animals -

Shropshire - ocean pollution - deep sea pollution - oceans pollution Pb -

Dorset - marine pollution law - marine pollution causes -

Nottinghamshire - causes of marine pollution -

Aberdeen - marine pollution regulations - marine pollution monitoring - marine pollution laws

Armagh - control of marine pollution - marine pollution statistics - coastal and marine pollution -

Bangor - marine pollution research - land based marine pollution - marine pollution pictures -

Bath - marine noise pollution - marine pollution effects - effects of pollution on marine life -

Belfast - marine water pollution - marine life pollution - types of marine pollution -

Birmingham - source of marine pollution - pollution in marine environment - marine pollution and ecotoxicology -

Bradford - marine pollution prevention authority - marine pollution control unit - impact of marine pollution -

Brighton & Hove - effect of marine pollution - prevent marine pollution - marine air pollution -

Bristol - marine pollution facts - pollution in the marine environment - marine pollution solutions -

Cambridge - cause of marine pollution - marine pollution problems - marine pollution effect -

Nottingham - marine pollution regulation - reduce marine pollution - marine pollution photos -

Oxford - marine plastic pollution research and control act 1987 - marine pollution images - marine pollution incidents -

Peterborough - habitat pollution - ecosystem pollution - oil pollution -

Plymouth - underwater pollution - marine ecosystem - biodiversity pollution -

Portsmouth - the effects of marine pollution - pollution to marine life - marine pollution control act -

Preston - solutions for marine pollution - marine pollution convention - marine pollution liability -

Ripon - marine pollution and ecotoxicology - marine pollution from ships - effects of water pollution on marine life -

Salford - marine pollution sources - marine ecosystem pollution - effect of pollution on marine life -

Salisbury - water modeling - hydraulic project - hydrologic modeling -

Sheffield - hydrological modeling - usgs modeling - sediment modeling -

St Albans - hydraulic optimization - project modeling - hydraulic study -

St David's - fluid modeling - simulation modeling - soil modeling -

Stirling - flood modeling - groundwater modeling - rainfall modeling -

Stoke-on-Trent - marine pollution act - sources of marine pollution - marine pollution prevention

Sunderland - marine oil pollution - prevention of marine pollution - effects of marine pollution -

Swansea - environmental modeling - prediction modeling - hydraulic distribution -

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