Embedded Files
User interface: parameters' input at chimney output. The program starts with default values. Every label has its SI unit and a tooltip explaining its meaning. Label names match source code.
User interface: parameters' input at chimney output. The program starts with default values. Every label has its SI unit and a tooltip explaining its meaning. Label names match source code.
UI: reference values.
UI: reference values.
UI: atmospheric stability matrix. You choose 6 representative air velocities, and the atmospheric stability categories according to Pasquill (see pop-up).
UI: atmospheric stability matrix. You choose 6 representative air velocities, and the atmospheric stability categories according to Pasquill (see pop-up).
UI: wind rose for each season and its associated probability matrix. The pop-up window comes by clicking the "What's this?" button on the wind roses graph area.
UI: wind rose for each season and its associated probability matrix. The pop-up window comes by clicking the "What's this?" button on the wind roses graph area.
UI: plumes solving. Plume evolution is modeled by a system of differential equations (ODE). Sundials (Cvode) library solves them really fast (around 2--4 seconds a typical problem). As penacho is oriented to research and education, you can choose some of the numerical solver parameters and data storage options. Memory allocation is dynamic, so you can solve from 50 m to 50 km (or more).
UI: plumes solving. Plume evolution is modeled by a system of differential equations (ODE). Sundials (Cvode) library solves them really fast (around 2--4 seconds a typical problem). As penacho is oriented to research and education, you can choose some of the numerical solver parameters and data storage options. Memory allocation is dynamic, so you can solve from 50 m to 50 km (or more).
UI: concentrations calculation. This step computes concentration on a user selectable 3 dimensional mesh. It's a high-nested calculation that request lots of memory and CPU.
UI: concentrations calculation. This step computes concentration on a user selectable 3 dimensional mesh. It's a high-nested calculation that request lots of memory and CPU.
3D mesh example: concentration is computed exactly at intersection points. Vtk library interpolates the values for the 2D or 3D surfaces.
3D mesh example: concentration is computed exactly at intersection points. Vtk library interpolates the values for the 2D or 3D surfaces.
UI: Plume representation and save. All solved plume (48 different conditions) can be drawn. Data can be saved as a text or CSV file.
UI: Plume representation and save. All solved plume (48 different conditions) can be drawn. Data can be saved as a text or CSV file.
What's this? over Variable drop-down. Every variable in the model can be drawn.
What's this? over Variable drop-down. Every variable in the model can be drawn.
Plume 3D graph. The color bar shows the fluid mass fraction value (adimensional). This program window is completely interactive: you can move, rotate, o zoom the image. The ground plane shows the need for reflection of the vertical dispersion.
Plume 3D graph. The color bar shows the fluid mass fraction value (adimensional). This program window is completely interactive: you can move, rotate, o zoom the image. The ground plane shows the need for reflection of the vertical dispersion.
Plume 3D graph for a stable atmosphere: plume rise has a narrow envelope.
Plume 3D graph for a stable atmosphere: plume rise has a narrow envelope.
Vtk visualization library lets you see graphics with red-cyan 3D glasses.
Vtk visualization library lets you see graphics with red-cyan 3D glasses.
CSV result file opened by OpenOffice Calc. It's a five click job to graph the plume height (z vs x) or the temperature (T vs x) drop at the first 50 meters.
CSV result file opened by OpenOffice Calc. It's a five click job to graph the plume height (z vs x) or the temperature (T vs x) drop at the first 50 meters.
UI: concentration and sedimentation representation and save.
UI: concentration and sedimentation representation and save.
Carbon monoxide concentration distribution on the ground. It looks like a 2D graph, but it is a 3D bird's-eye view completely interactive: you can move, rotate, or zoom the image.
Carbon monoxide concentration distribution on the ground. It looks like a 2D graph, but it is a 3D bird's-eye view completely interactive: you can move, rotate, or zoom the image.
3D views of CO concentration for a 2500 m x 2500 m x 200 m volume. In addition to ground distribution, there are iso-concentration surfaces for three different values. (An isosurface represents points of a constant concentration value.)
3D views of CO concentration for a 2500 m x 2500 m x 200 m volume. In addition to ground distribution, there are iso-concentration surfaces for three different values. (An isosurface represents points of a constant concentration value.)
CO ground distribution and a vertical grid plane. User can choose to color on red the local volume maximum, or a fixed value (normally the maximum on the ground). Bigger values will be colored in red too: this way you can get some information from a wide data range volume.
CO ground distribution and a vertical grid plane. User can choose to color on red the local volume maximum, or a fixed value (normally the maximum on the ground). Bigger values will be colored in red too: this way you can get some information from a wide data range volume.
Ground CO distribution and an iso-concentration surface for a yearly study. The wind rose leads the main 8 plume directions. The average values are calculated according to the probability matrix, which depends on wind ranges and wind directions for each season. The wind blows more often from the north in this study. You can see that the nearby surrounding of a plume has very little contamination.
Ground CO distribution and an iso-concentration surface for a yearly study. The wind rose leads the main 8 plume directions. The average values are calculated according to the probability matrix, which depends on wind ranges and wind directions for each season. The wind blows more often from the north in this study. You can see that the nearby surrounding of a plume has very little contamination.
Three simulations for different smokestack heights. Penacho helps you to see that the taller the chimney is, the fewer contamination on the ground. Great conclusion.
Three simulations for different smokestack heights. Penacho helps you to see that the taller the chimney is, the fewer contamination on the ground. Great conclusion.
Parametric analysis for atmospheric stability: from A (very unstable, upper left corner) to F (stable, lower right corner). It's the most important parameter for pollutant distribution. More atmospheric instability causes more contamination on the ground, on a smaller area, and closer to the emission point. Red color means equal or bigger values than the local maximum at F case.
Parametric analysis for atmospheric stability: from A (very unstable, upper left corner) to F (stable, lower right corner). It's the most important parameter for pollutant distribution. More atmospheric instability causes more contamination on the ground, on a smaller area, and closer to the emission point. Red color means equal or bigger values than the local maximum at F case.
Parametric analysis for different wind magnitudes: more wind speed causes more contamination on the ground, on a smaller area, and closer to the emission point.
Parametric analysis for different wind magnitudes: more wind speed causes more contamination on the ground, on a smaller area, and closer to the emission point.
🄯 2010 Jose Luis Barros Fernandez
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