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© CADFEM 2015 Forum Digitale Städte - ACUM 2015 Bremen
Forum Digitale Städte - ACUM 2015 Bremen
Stefan Trometer, CADFEM GmbH
© CADFEM 2015
Exploring Urban Simulation
Forum Digitale Städte - ACUM 2015 Bremen
3D city model of Frankfurt
Generated and hosted by
virtualcitySYSTEMS
CityGML standard = data model
NOT only visualization
About 200.000 building objects
Regularly updated database
Automated processes indispensable
Urban complexity is mandatory
for many fields of application
(wind, climate, risk mitigation, …)
Semantic 3D City Models
© CADFEM 2015
Exploring Urban Simulation
Forum Digitale Städte - ACUM 2015 Bremen
Current Fields of Application
Urban Simulation
&
Urban Blast
Flooding & Tsunami
Urban Air Flow
Smoke & Pollution
Crowd Movement
© CADFEM 2015
Exploring Urban Simulation
Forum Digitale Städte - ACUM 2015 Bremen
Current Technology Partners
Urban Simulation
&
Urban Air Flow
Crowd Movement
Novosibirsk State University
of Architecture
and Civil Engineering
Urban Blast
Flooding & Tsunami
Smoke & Pollution
Titelmasterformat durch Klicken bearbeiten
© CADFEM 2015
Demonstrators R&D Projects
Forum Digitale Städte - ACUM 2015 Bremen
© CADFEM 2015
Urban Blast Protection
Forum Digitale Städte - ACUM 2015 Bremen
• Project Blast pressure wave propagation
in urban environments (DETORBA)
• Type Funded research project (BMBF)
Web-Application for model preparation Interface to ANSYS WorkbenchGeometry optimization for explicit simulation Automated process implementation Solver Autodyn, LS-Dyna, ApolloOptimized post-processingResult visualization in Web-Application Sensitivity & robustness analysis OptiSLangOptimization of structural members
© CADFEM 2015
Urban Air Flow
Forum Digitale Städte - ACUM 2015 Bremen
• Project High-Rise wind loading
and pedestrian air flow comfort
• Type Demonstrator
Pedestrian comfort
at ground levelVelocity contours
at a height of 50m and 150m
Model preparation
Measured
wind profiles
Cooperation with
© CADFEM 2015
Turbulence Modeling in Urban Space
Forum Digitale Städte - ACUM 2015 Bremen
• Project Wind flow modeling in the vicinity
of complex buildings within an urban
environment
• Type PhD project of S. Valger (Prof. Fedorova)
Distribution of time-averaged
static pressure
© CADFEM 2015
Urban Air Quality & Climate
Forum Digitale Städte - ACUM 2015 Bremen
• Project Transient urban smoke development under
steady-state air flow conditions
• Type Demonstrator Realistic fire
scenarioSteady-state air flow
conditions Target
→ Urban air quality & pollution
→ Urban climate
Temperature development of a
roofing fire scenario modeled with
additional variable transport
© CADFEM 2015
Geometry Optimization for CFD
Forum Digitale Städte - ACUM 2015 Bremen
• Project Optimizing city model geometry
for individual CFD simulation
• Type Demonstrator
Pre-optimized CityGML
model export
Enhancements in meshing city
models using the ANSYS AIM
Shrink Wrap Method
Target
→ Increasing automated meshing for urban complexity
→ Decreasing labor for high quality CFD models
Cooperation with
© CADFEM 2015
Implementation of Building Models (BIM)
Forum Digitale Städte - ACUM 2015 Bremen
• Project Implementation of detailed IFC | BIM
building models into city models
• Type Demonstrator
IFC|BIM model from
Architecture & Engineering
Integration into city models
for local & urban simulations
Import
ANSYS Workbench
Urban steady-state air flow
condition and evaluation of wind
loading on building windows
Target→ Tool to create simulation models
with different levels of detailbased on IFC building models
© CADFEM 2015
River Flooding & Tsunami Protection
Forum Digitale Städte - ACUM 2015 Bremen
• Project River flooding & Tsunami protection
in urban environments
• Type Demonstrator
3D simulation of a Tsunami
impacting a building with ANSYS Fluent
2D model of the Elbe for river
flooding scenarions
(Source: TU-Dresden)
Global Tsunami risk analysis with the GFZ
early warning system TRIDEC Cloud
showing a forecast scenario for Singapore
(Source: GFZ Potsdam)
→ Submitted research
proposal with subcontract
for ANSYS Germany
© CADFEM 2015
Urban Automotive Engineering
Forum Digitale Städte - ACUM 2015 Bremen
Contact with AUDI and MAN Trucks – Topics
• Driving simulator in virtual cities
• Car body design based on real street conditions (road scan)
• Autonomous driving
• Car-to-car network
in urban environments
Source: City of Zurich
© CADFEM 2015
Urban Crowd Movement
Forum Digitale Städte - ACUM 2015 Bremen
• Project Crowd simulation in urban environments
for evacuation and major events
• Type Demonstrator
Model definition
→ Urban evacuation scenario with 2.000 people
→ based on semantic city model data of building usage
→ Transient simulation result
→ Result: Evacuation takes less than 6 minEvacuation Area
Rescue Zone
Rescue Zone
Cooperation with
© CADFEM 2015
Urban Waste Heat Detection
Forum Digitale Städte - ACUM 2015 Bremen
• Topic Waste heat detection by unmanned aerial vehicles
• Type Research proposal (BMWi)
• Partners Hangwind | Fraunhofer Morgenstadt (IAO, IOSB)
© CADFEM 2015
Questions?
Forum Digitale Städte - ACUM 2015 Bremen
CADFEM GmbH
Dr.-Ing. Stefan Trometer
New Business Development - Digital City
Marktplatz 2
85567 Grafing b. München
Germany
Tel: +49-(0)8092-7005-35
Fax: +49-(0)8092-7005-570
E-Mail: [email protected]
www.cadfem.de