CANARINA:
DISPER:
SOLUTIONS: DISPER
COMMANDS:
ALGORITHMS:
EMISSIONS:
GRAPHS:
Stability Parameter
For stable situations, the stability parameter, s, is calculated:
s=g[(dT/dz)/Ta] (16)
As a default approximation, for stability class E (or 5) dT/dz is taken as 0.020 K/m, and for class F (or 6), dT/dz is taken as 0.035 K/m.
Stable - Crossover Between Momentum and Buoyancy
For cases with stack gas temperature greater than or equal to ambient temperature, it must be determined whether the plume rise is dominated by momentum or buoyancy. The (DT)c is determined and solving for DT, as follows:
(DT)c=0.019582 Ts vs s1/2 (17)
If the difference between DT exceeds or equals (DT)c, plume rise is assumed to be buoyancy dominated, otherwise plume rise is assumed to be momentum dominated.
Stable - Buoyancy Rise
For situations where DT exceeds (DT)c as determined above, buoyancy is assumed to dominate. The distance xf is determined by
xf=2.0715 us s-1/2 (18)
The plume height, he, is determined by
he=hs+2.6 [Fb/(uss)]1/3 (19)
Stable - Momentum Rise
Where the stack gas temperature is less than or equal to the ambient air temperature, the assumption is made that the plume rise is dominated by momentum. Then,
he=hs+1.5[Fm/(uss1/2)]1/3 (20)
The equation for unstable-neutral momentum rise is also evaluated. The lower result of these two equations is used as the resulting plume height.
Algorithms I - Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI - Algorithms VII - Algorithms VIII - Algorithms IX - Algorithms X
Air pollution map (XY-Plane) produced by continuous discharge in time (three stacks). The red colour represents high pollutant concentrations. Wind: W (270 degrees).
Air pollution map (XY-Plane) produced by continuous discharge in time. The fucshia lines represents a stacks in the XY-Plane. The red colour represents high pollutant concentrations. Winds: NE (45 dregrees) and 145 degrees.
Canarina Algoritmos Numéricos, S.L.
Environmental software solutions
Software para impacto medio ambiental
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
air modeling
CANARINA: Home - Air pollution · DISPER - Noise pollution · CUSTIC - Water pollution · DESCAR - Contact us
DISPER: Air pollution dispersion · DISPER - Solutions - Data - Algorithms - Emissions - Graphs - ISC3 (VOL. 2)
SOLUTIONS: Air pollution dispersion · DISPER - Software solutions - Software advantages - Price - DEMO download
COMMANDS: Input data I - Input data II - Input data III - Input data IV - Temporal average - Import and export data - Software commands
ALGORITHMS: Algorithms I - Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI - Algorithms VII - Algorithms VIII - Algorithms IX - Algorithms X
EMISSIONS: Emissions I - Emissions II - Emissions III - Pollutants I - Pollutants II
GRAPHS: Graphs I - Graphs II - Graphs III - Graphs IV
DISPER software solutions: This application has been used in great number of environmental reports, air pollution courses and air pollution studies in the last years. We currently have users in more than 10 countries.
Chester - analysis of water pollutants - handbook of environmental analysis - environmental monitoring and analysis -
Chichester - water and air pollution analysis - analysis of pollutants - environmental water analysis -
City of London - environmental pollution analysis - water pollution analysis - analysis of water pollution -
Coventry - pollution analysis - analysis of pollution - analysis of environmental pollutants -
Derby - human analysis - human pollution - environment pollution -
Derry - pollution sediment - pollution economics - effect of pollution -
Dundee - pollution plants - pollution chemistry - pollution book -
Durham - methods analysis - groundwater analysis - pollution models -
Edinburgh - ph analysis - analytical analysis - water quality analysis -
Ely - marine analysis - gc analysis - blood analysis - hplc analysis -
Exeter - water analysis - fish analysis - pollution poisoning - sediment analysis -
Glasgow - metal analysis - trace analysis - soil analysis - iron analysis -
Gloucester - pollution arsenic - speciation analysis - pb analysis - soils analysis -
Hereford - nickel analysis - sediments analysis - selenium analysis -
Inverness - contamination analysis - chromium analysis - arsenic analysis -
Kingston upon Hull - zinc analysis - lead analysis - copper analysis -
Lancaster - pollution accumulation - cadmium analysis - pollution lead - metals analysis -
Leeds - pollution metals - pollution zinc - toxicity analysis -
Leicester - environmental pollution - pollution soil - aquatic analysis -
Lichfield - pollution - water pollution - air pollution - air quality study
Lincoln - estimation analysis - chemical analysis - air pollution study -
Lisburn - pollution emissions - air pollution water - method analysis -
Liverpool - gc ms analysis - gc analysis - methods analysis - procedure analysis -
Manchester - data analysis - oil pollution - effects pollution -
Gloucestershire - poor indoor air quality - air quality study
Staffordshire - indoor air quality mold - indoor air quality iaq - indoor air quality certification -
Oxfordshire - maine indoor air quality - indoor air quality program -
Devon - indoor air quality system - indoor air quality specialists - california indoor air quality -
Hampshire - indoor air quality specialist - indoor air quality handbook -
North Yorkshire - indoor air pollution in developing countries - indoor air quality report -
Lincolnshire - assured indoor air quality - air quality study
Somerset - indoor air pollution control - indoor air quality market -
Norfolk - office indoor air quality - indoor air quality in office buildings - prevent indoor air pollution -
Northumberland - greenguard indoor air quality certified - skuttle indoor air quality - indoor air pollution india -
Wiltshire - indoor air quality - air quality study
Cambridgeshire - how to test indoor air quality - air quality study
Aberdeen - school indoor air quality - indoor air pollution facts - international conference on indoor air quality and climate -
Armagh - measuring indoor air quality - indoor air quality information - indoor air quality investigator -
Bangor - who indoor air pollution - indoor air quality analysis - indoor air quality systems -
Bath - what is indoor air quality - indoor air quality co2 - american indoor air quality association -
Belfast - indoor air quality schools - health canada indoor air quality - indoor air quality expert -
Birmingham - indoor air quality plan - indoor air quality services - indoor air quality measurement -
Bradford - indoor air quality consultants - indoor air quality equipment - good indoor air quality -
Brighton & Hove - reduce indoor air pollution - indoor air quality sampling - indoor air quality survey -
Bristol - indoor air quality issues - indoor air quality canada - indoor air quality tools for schools -
Cambridge - indoor air quality testing - indoor air quality association - indoor air quality standards -
Canterbury - indoor air quality in schools - indoor air quality plants - indoor air quality monitors -
Cardiff - ventilation for acceptable indoor air quality - indoor air quality monitor - improve indoor air quality -
Carlisle - american indoor air quality - american indoor air quality council - indoor air quality monitoring -
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.