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URBALTERRE - Atelier Montlaur - Collectivité Territoriale de Corse - 29.09.2014
Urban Wind Design for the Citadel of Bonifacio
Dominique Dias,
Sylvain Aguinaga2,Marc Dufresne2
1Urbalterre, France; 2CSTB, France
9th Intenational
Conference on
Urban Climate
20th July 2015,
Toulouse, France
URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
CONTENTS
1 / Location and diagnostic
2 / Process
3 / Results
4 / Learnings
5 / Thanks
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URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
1 - LOCATION AND DIAGNOSTIC
1 / Location and diagnostic
2 / Process
3 / Results
4 / Learnings
5 / Thanks
The straight of Bonifacio, beetween Sardegna and Cors ica
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The citadel of Bonifacio is on a East-West oriented pe ninsula
Le large
Le plateau
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Up to the Cliff : The old town, the old military base and the cemetery
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AB
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Sea, Wind, and Sun
effects
=
soil is dry,
with very few trees
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Bonifacio is called « fille du vent » - « daughter of the wind »
Bonifacio is called « fille du vent » - « daughter of the wind »
Strong wind all the year long
� More than 150 days per year, all seasons
High speed wind
�More than 20 days par year with 100 km/h wind
�Every year storms with winds up to 120 km/h until 200 km/h
Location « in the wind »
�The citadel is face to the strongest wind from the sea
Around 2 millions tourists visit Bonifacio each yea r.
The project : museum, new hôtel, baby nursery, hous ing and activities
Wind is a stake of urban comfort and city branding.
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Chicago (USA) � called « Windy City » . The wind is not very strong but is very cold in winter from the lake Michigan and threew the regular streets.
Wellington (NZ)� Supposed to be the windiest city in the world, 2/3 days up to 4 Beaufort all the year long.
Punta Arenas (Chile) � Windiest than Wellington , and moreover is located « sous le vent »
Tarifa (Spain) � Close to Gibraltar, supposed to be the windiest in Europe, but less than Bonifacio.
Essaouira (Marocco) � supposed to be the windiest in North Africa, but less than Bonifacio.
Karpathos (Greece) � As windiest as Punta Arenas 6 months in the year
Most windy cities in the world…
Probably the windiest city in Europe and Mediterranea n RegionSources : www.windfinder.com www.infoclimat.fr
Bonifacio Marseille
Tarifa Punta Arenas
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URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
2 - PROCESSES
1 / Urban design methods
2 / Wind speed modelization
URBALTERRE - Atelier Montlaur - Collectivité Territoriale de Corse - 29.09.2014
Urban Design Process for an intergated solution
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An integrated solution to control wind effects
With skills from traditionnal building, farming and wind turbine industry :
� Oriented buildings back to the wind, fields protection, wind turbine location
URBALTERRE - Atelier Montlaur - Collectivité Territoriale de Corse - 29.09.2014
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URBALTERRE - Atelier Montlaur - Collectivité Territoriale de Corse - 29.09.2014
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Wind study process
A study process combining two solutions :
� Computationnal Fluid Dynamics (CFD) modelization, with URBAWIND
� Real turbine test on physical models, with CSTB Laboratory (Nantes, France)
An iterative process:
� From the test with the 2013 project, to the new URBALTERRE project
� With many CFD tests during the design, and two test with the turbine
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UrbaWind
� MeteoDyn en France, logiciel UrbaWind
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URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
3 - RESULTS
1 / Diagnostic
2 / Process
3 / Results
4 / Learnings
5 / Thanks
Existing
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Demolition (red)
Former 2013’s Project (pink)
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Urbalterre Project
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Urbalterre Project
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URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
4 - LEARNINGS
1 / Diagnostic
2 / Process
3 / Results
4 / Learnings
5 / Thanks
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URBALTERRE – ICUC9 Conference – TOULOUSE – 20th July 2015
5 - THANKS
Cécile NGUYEN, Architect, UrbalterreIsabelle RAULT, Landscape Designer, H&RLaurent DUCROUX, Lawer, DL AvocatsSynvain AGUINAGA, MARC DUFRESNE, CSTB
Paul GIACOBBI, President of CorsicaMarie-Pierre LABORDE, Marc-Antoine MONDOLONI – Corsi ca Local Government
Lionel GAUDIOT, Institut Géographique NationalStéphane SANQUER, Meteodyn
Jean-Charles ORSUCCI, Mayor of BonifacioHélène PORTAFAX, City of Bonifacio
Contact
Dominique DiasExecutive
dominique.dias@urbalterre.comwww.urbalterre.com
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Wind condition comparison
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Wind condition comparison
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