example of pedestrian comfort & safety study using cfd modelling software urbawind

Green building and urban planning

NEW SOLUTIONS TO :

– Reduce energy costs thanks to natural ventilation.

– Respect environment thanks to wind and solar resource.

– Bring more quality to outdoor living spaces through studies of climate comfort.

For example, for a site study of DISCOMFORT FRECUENCIES

– Mappings of wind speed-up for prevailing wind directions at the pedestrian height (1.5 m above the ground).

– Mappings of frequencies of the gust speeds exceeding the speed of 3,6m/s at the pedestrian height (1.5 m above the ground).

To improve the projects according to the outdoor pedestrian comfort

NUMERICAL MODELLING OF THE URBAN CLIMATE

Example 1 :REHABILITATION OF DISTRICTS

Initial state

Project

AERIAL VIEW OF THE SITE

ENVIRONMENT CONSIDERED

Initial state

Project

BURST ACCELERATION COEFFICIENTS

Initial state

Project

FREQUENCIES OF PEDESTRIAN DISCOMFORT

Initial state

Project

WIND PROTECTIONS

Before protection After protection

WIND PROTECTIONS

Before protection After protection

Marche rapide Marche normale Debout Assis

France (CSTB) F(V>3.6) < 20 % F(V>3.6) < 10 % F(V>3.6) < 5 % F(V>3.6) < 5 %

Brisk walking Normal walking Standing Seated

SYNTHESIS

Marche rapide Marche normale Debout Assis

France (CSTB) F(V>3.6) < 20 % F(V>3.6) < 10 % F(V>3.6) < 5 % F(V>3.6) < 5 %

Rehabilitation of a former elementary school

Rehabilitation of exteriors spaces

Demolition of the towers and construction of small height building.

Creation of an esplanade in the heart of the district

Creation of a playground

Brisk walking Normal walking Standing Seated

EXAMPLE 2 :NEW BUILDING

UrbaWind CFD simulations

©

Block B3A of ZAC Paris Rive gauche

Owner: IVANHOE CAMBRIDGE - HINES France

Architect: Atelier Jean NOUVEL

EXAMPLE 2 :NEW BUILDING

Winter Summer

FREQUENCIES OF PEDESTRIAN DISCOMFORT