Sustainicum Collection

Consus The aim of the project is to establish a regional science-society network for sustainability innovations in Albania and Kosovo in order to strengthen the connection and collaboration of institutions in the field of higher education, research and practice.

Resource facts

  • Independent of the number of students
  • Up to 3 lecture units
  • English, German

Resource Description

Instruction file

Additional attachments

City Flow – Virtual Current Experiment(Resource ID: 206)

City Flow is software that allows the user to create a virtual environment within an editor program to create a roughly realistic 3-D model of air current conditions in relation to the model’s structures.

Andreas Mursch-Radlgruber created the software in Java as part of a final project.

The 3-D model of air current structures is possible by using the diagnostic solution of the law of conservation of mass, using current-dynamic background knowledge based on empirical relations of topological structures (buildings, trees etc.). The numerical solution is solved using 3-dimensional relaxation.

The editor program allows a realistic approximation of playfully complex scenarios. The results are calculated within seconds (depending on the computer’s capacity) and displayed in easily understandable 3-dimensional form on the screen. The illustrations are stationary fields, which can easily be rotated and zoomed. A visualization of the trajectory allows the current structures to be more precisely studied.

Aha effect

The interactive nature of the program makes it possible to study and understand the complex effect of built structures on air currents (e.g. recirculation, quicker cutting of paths, etc.).

Contact details for borrowing physical devices
Email to author
Learning Outcomes
Understanding the effect of air current barriers on the Earth’s surface.
Relevance for Sustainability
Air currents are a very significant element in our physical environment. All activities in our environment change (sometimes more, sometimes less) current conditions and their subsequent effects (transportation). This simulation tool can quickly portray the effect of structural changes on currents.
Related Teaching Resources
No specific previous knowledge / related resources required
Preparation Efforts
Sources and Links

Oke, T.R.: 2001: Boundary Layer Climates. 2ed, Cambridge Univ. Pr.

Funded by
Funded by the Austrian Federal Ministry of Science and Research within the framework of the call "Projekt MINT-Massenfächer" (2011/12)

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Erich Mursch-Radlgruber


Erich Mursch-Radlgruber
This teaching resource is allocated to following University:
BOKU - University of Natural Resources and Life Sciences Vienna
Institute of Meteorology (BOKU Vienna)


Creative Commons

Teaching Tools & Methods

  • Simulation program
  • Reflection