Urban wind design citadel of Bonifacio Corsica

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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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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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2 - PROCESSES

1 / Urban design methods

2 / Wind speed modelization


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


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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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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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4 - LEARNINGS

1 / Diagnostic

2 / Process

3 / Results

4 / Learnings

5 / Thanks

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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

[email protected]

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Wind condition comparison

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Wind condition comparison

Urban wind design citadel of Bonifacio Corsica

Presentations & Public Speaking

Transcript of Urban wind design citadel of Bonifacio Corsica