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Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
Tropos 7.2
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Tropos 7.2


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Tropos 7.2. - The advanced atmospheric dispersion modeling software for odors by Odotech

Tropos 7.2. - The advanced atmospheric dispersion modeling software for odors by Odotech

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  • 1. TROPOS 7.2 The advanced atmospheric dispersion modeling software for odors
  • 2. Tropos © 7.2
    • Reliable & Fast , Tropos Impact © 7.2 MODELS THE ATMOSPHERIC DISPERSION OF ODORS.
    • For Environmental Impact Studies of Atmospheric Pollutant Emissions & Odors.
    • A range of Atmospheric Dispersion Models including the Gifford-Gaussian and Turner Models optimized for the atmospheric dispersion of odors.
    In order to model odor dispersion, specifically adapted & validated models are necessary.
  • 3. Modeling Framework
    • Import a map of the target site in various graphic formats:
      • Image Bitmap Windows (bmp)
      • Graphics Interchange Format (gif)
      • Tag Image File Format ( tif)
      • Portable Network Graphics (png)
      • CD Kodak Photo (pcd)
    • Environment types of receptors modeled: rural, urban.
    Aerial Map of Site
  • 4. Meteorological Data
    • Complete meteorological data management environment:
      • Import Text Files
      • Edit Data
      • Display Wind & Stability Roses
    Meteorological Data Editing Wind Roses Display
  • 5. Chemical Compound Assessed
    • Choice between :
      • Modeling specifically odors or
      • Specifically a chemical compound (selected from an incremental data base of 400 compounds and 5000 chemical synonyms)
    • Chemical compounds from the data base can have the following thresholds :
      • Olfactory Perception
      • Toxicity
      • Explosiveness
      • Flammability
      • Exposure to Different Standards
    Chemical Compound Selection
  • 6. Sources
    • Different types of emission sources:
      • Point
      • Surface
      • Linear
    • Characterized by:
      • Physical Dimensions
      • Height
      • Flow Rate
      • Flow Surface Distribution
      • Flow Rate Time Variation
      • Emission Fluctuation over Time (manual entry or .txt file import)
    Parametrization of Sources
  • 7. Receptors
    • Different receptors, in order to target geographic areas of interest for atmospheric dispersion simulation:
      • Point
      • Line
      • Surface
    • Characterization of receptors :
      • Dimensions
      • Measuring Height
    Definition of Receptors
  • 8. Odor Atmospheric Dispersion
    • To measure odor, we measure its perception by the human nose. The nose is excited by the fluctuations in concentration rather than by the mean concentration. Because of its sensitivity, the nose perceives the concentration peaks, which can often exceed the mean value.
    • Models used for odor dispersion must thus also take into account the odor concentration peaks, and not only the mean concentration that most models estimate. It is particularly important to take into account the wind eddies responsible for turbulent diffusion.
    Tropos Impact © contains the Gifford-Gaussian model developed by ODOTECH INC in order to accurately model the atmospheric dispersion of ODORS. Combined Gifford-Gaussian Model
  • 9. Atmospheric Dispersion Models 1) Gaussian Model 2) Gifford-Gaussian Model 3) Turner Model 4) MUC Model 5) Puff Model Specific to Odors
  • 10. Gaussian Model
    • The Gaussian Model is one of the most widely used models in the world to study dispersion phenomena, notably by the EPA (Environmental Protection Agency). This model estimates pollutant concentrations at any point in space based on various factors:
      • Wind Speed & Direction
      • Atmospheric Stability
      • Mixing Height
      • Temperature
    Gaussian Dispersion Plume
  • 11. Gifford-Gaussian Model (Optimized for Odors)
    • The Gifford-Gaussian Model is designed specifically for odor dispersion .
    • It takes into account:
      • plume meandering and concentration fluctuation
      • real perception of odors
    Concentration (o.u./m 3 ) Gaussian Gifford Gifford-Gaussian Meters
  • 12. Turner Model (Optimized for Odors)
    • The Turner model corrects the Gaussian model by converting the concentrations computed on a 60-minute time basis to a different time basis.
    • This approach is used primarily for odor dispersion based on the commonly used peak-to-mean concentration method.
  • 13. MUC Model
    • The MUC (Montreal Urban Community) model comprises the four formulae specified in MUC By-Law 90 regarding the atmospheric dispersion of gaseous contaminants.
    Simulation with MUC Model
  • 14. Puff Model
    • The Puff Model was designed to simulate instantaneous releases into the atmosphere. This model is used to predict the impact of an accident (tanker truck, holding tank leak or broken pipeline) to allow effective emergency planning.
    Puff Model Simulation
  • 15. Plume Rise
    • Tropos Impact © 7.2 takes in account the plume rise elevation by correcting the value of the stack height. In order to effectively evaluate this height, 3 models can be used:
      • U.S. Environmental Protection Agency (EPA)
      • Holland
      • Montreal Urban Community (MUC)
  • 16. Simulation Types
    • Tropos Impact © 7.2 offers you multiple simulation types :
      • Hourly Maxima
      • Percentiles
      • Trigger Thresholds
      • Mean Concentrations
      • Instantaneous Concentrations
  • 17. Simulation Results
    • Personalize the display of your results
    • Select and modify different display parameters.
    Wind Roses at Receptor Point Display Configuration
  • 18. Simulation Reports
    • Automatically generate simulation reports , exportable to text files
    • Export your graphic results to bitmap files
    Simulation Report Export Graphic Results
  • 19. Computer Requirements
    • Tropos Impact © 7.2 requires a computer with the following characteristics:
    For modeling odor atmospheric dispersion, Tropos Impact © 7.2 is unbeatable . Fast, effective, user-friendly, ... Modeling has never been this easy.
      • Intel compatible processor (1 Ghz recommended)
      • Windows 2000/XP Operating System
      • 50 Mb hard disk space for the initial installation
      • 32 Mb graphic card
  • 20. Contact
    • Odotech is a leading designer and producer of odor measuring and monitoring systems. Its services department carries out odor impact and related studies for municipalities, waste disposal operators, waste water treatment plants, and various industrial facilities, worldwide.
    Odotech Inc. 3333 Queen Mary Road, Suite 301 Montréal (Québec) H3V 1A2 Canada Phone: (514) 340 5250 Fax: (514) 340 5211 [email_address] Odotech SAS 20 rue de la Villette 69328 Lyon Cedex France Phone : +33 (0) 4 26 68 51 56 Fax : +33 (0) 4 26 68 51 57