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Modelling of Complex Urban Systems and Areas of Possible Improvements

Modelling of Complex Urban Systems and Areas of Possible Improvements. Dr Žarko Stevanović Belgrade University Institute of Nuclear Sciences - VINČA zare @ vinca.rs. MODELLING - CONCEPT. Natural Phenomena. Modelling. Quantification - CFD. NATURAL PHENOMENA.

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Modelling of Complex Urban Systems and Areas of Possible Improvements

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  1. Modelling of Complex Urban Systems and Areas of Possible Improvements Dr Žarko Stevanović Belgrade University Institute of Nuclear Sciences - VINČA zare@vinca.rs

  2. MODELLING - CONCEPT Natural Phenomena Modelling Quantification - CFD

  3. NATURAL PHENOMENA • Fluid Flow (Air Movement, Turbulence, Buoyancy) • Heat Transfer (Conduction, Convection, Radiation) • Mass Transfer (Pollution Dispersion) • Phase Changes (Vaporization, Solidification) • Combustion (Heat and Smoke Realize) • etc.

  4. MODELLING BUILT ENVIRONMENT - SCOPE • Adaptations • Urban design: heat islands and street canyon effects • Building design and adaptations for protection against temperature, pollution, fire and flood risks • Mitigation • Urban design, structure and organization to promote low GHG emissions and healthy living • Energy efficiency / Low carbon design of buildings: impact on indoor environments

  5. Heat Islands Effects Rural Areas Urban Areas

  6. Street Canyon Effects Isolated Roughness Flow Skimming Flow Wake Interface Flow

  7. Urban Pollution Effects Point source pollution : - Chimney Line source pollution: – Urban Traffic

  8. MODELLING BUILT ENVIRONMENT - METHODOLOGIES • Experimental: • Wind – tunnel investigation • Modelling: • Computational Fluid Dynamics ( CFD )

  9. Experimental – Wind Tunnel

  10. CFD –E X A M P L E S

  11. Heat Islands Effects • Urban Model: • Buildings • Streets • Greenery • Water Surfaces Surface – Fasade Temperatures  Ž. Stevanović, 2013

  12. Street Canyon Effects Urban Model ofGlasgow City Center Horizontal components of velocity vector at the George Square Surface – FasadeAir Velocity  D. Mumović and Ž. Stevanović, 2002

  13. Urban Pollution Effects Urban Model ofCopenhagen City Center New building fasade NOx distribution – Natural ventilation study Surface – FasadeNOx Distribution  Ž. Stevanović, 2008

  14. Outdoor / Indoor Impact Fasade Design Detailes Natural Ventilation Study Velocity Vectors and Air Stream Lines  Ž. Stevanović, 2008

  15. Indoor Thermal Comfort Open Office Model Predicted Mean Vote Distribution  Ž. Stevanović, 2012

  16. Indoor Air Quality Theatre “Terazije” - Belgrade Model Iso-surface of CO2 concentration  M. Kavgić and Ž. Stevanović, 2007

  17. Indoor Risk Fire Assessment 3D Geometry of Belgrade Airport Terminal 2 Visualization of 100 oC temperature iso-surface, spreading during the fire  Ž. Stevanović, 2006

  18. Contact details Dr Žarko Stevanović www.vinca.rs zare@vinca.rs +381 63 8468 799

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