New Features and Bug Fixes in GRAL Dispersion Model GUI - Version 24.11 Released

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   The GRAL Dispersion Model/GUI has been updated to version 24.11, with several new features and critical bug fixes. This release brings enhancements designed to improve user experience and functionality.

   The high-resolution model system GRAMM/GRAL, developed at the Institute of Thermodynamics and Sustainable Propulsion Systems at Graz University of Technology, has become a benchmark for dispersion modelling in urban areas, both in scientific research, as well as in regulatory assessments. The model is especially suitable for low-wind speed conditions and complex terrain. An integrated micro-scale flow-field model takes the effect of buildings on pollutant dispersion into account. A new version of this system has been released with the following features:

  1. Bourke Contour Line Smoothing: An optional feature has been added to smooth Bourke contour lines using an adjustable Gaussian filter.
  2. Wind Rose Segments: Wind rose segments can now be drawn in pie shapes instead of triangles, enhancing the visual representation.
  3. Shape File Export: Users can now export shape files for Bourke contour lines, buildings, and the dispersion area, making it easier to work with external tools.
  4. Hourly Mean Evaluation: The system now supports the evaluation of hourly means for percentile calculations when dispersion times are sub-hourly (15, 20, or 30 minutes).
  5. Reproducible Results Support: A new option for "GRAL Reproducible Results" has been added, ensuring more consistent and reliable results.

In addition some bug fixes have been delivered

  1. Percentile Evaluation Crash: A bug that caused the percentile evaluation for odour calculations to crash, due to a missing parameter, has been fixed.
  2. Source Group Removal: A bug that prevented the removal of an existing source group after adding it but not saving it has been resolved.

To download the latest version, visit the release page.

This update continues to improve the GRAL Dispersion Model’s capabilities, offering better performance and user-friendly options for environmental modelling.

 

 

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Carlos Nietzsche Diaz Jimenez's Avatar

Carlos Nietzsche Diaz Jimenez

Carlos is the editor-in-chief of Olores.org and has been part of the odour world since 2001. Over the years, he’s taken part in more than 100 conferences on odour management around the world, and has written several papers on the topic. He’s also helped organize international events and training courses. Carlos runs a small company called Ambiente et Odora (AEO). When he’s not working, he enjoys spending time with his wife and twins, Laura and Daniel—and, of course, writing for Olores.org.

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