VIDENA NATIONAL SPORT COMPLEX ATHLETICS STADIUM
Stadium wind analysis and optimisation
THE ATHLETICS STADIUM
STADIUM WIND ANAYSIS
With the Pan-American games currently underway in Peru, the highlight of the newly redeveloped VIDENA National Sport complex is the world class athletics stadium.
Through detailed modelling of the local wind characteristics, K8T provided the CFD analysis of the proposed designed for the Athletics stadium that was used to understand how the stadium design would affect the wind flow and ensure the track would be compliant with the International Association of Athletics Federations (IAAF) conditions for wind assistance during track and field events.
PAN AMERICAN & PARA-PAN AMERICAN GAMES 2019
Bringing the Americas together through sport, the Pan American and Para Pan American Games host 41 different countries that participate across multiple sporting disciplines. With 6680 athletics competing in the completions and 39 sporting events the games cover a wide spectrum of sports.
The games are the first time Peru has hosted such a large sporting event with 41 facilities required across Lima to accommodate the variety of sports such as swimming, archery, track events and bowling.
NATIONAL SPORTS COMPLEX VIDENA
With the stadium being used for athletics events during the Pan American and Para-Pan American Games in 2019, there were criteria established to ensure a world class facility.
The stadium has a striking design with large sails that encompass the south end seating and flows around to meet the roof of the main concourse. Below the sails, operational louvres span between the base of the sails and the stand to allow the moderation of airflow into the main bowl.
The upgrade to the existing site including the development of other areas including the construction of a velodrome, aquatics centre and bowling alleys that has altered the landscaping to allow ease of passage for pedestrians around the site.
DESIGNED TO IAAF COMPLIANCE
K8T provided the environmental analysis through modelling the stadium to ensure a track that is compliant with the IAAF guidelines through having a tail wind of 2.0-2.5 m/s and provide a track that does not slow down sprinters by precious milliseconds, through having a head wind.
The stadium had to be designed to mitigate the prevailing southerly wind that occurs at the site as well as ensuring that the resultant mitigation does not impede the athletes. Through the use of a large scale CFD model of the local area and the surround VIDENA sport complex, the stadium design could be evaluated against the IAAF criteria to ensure a compliant track.
The track received confirmation of the IAAF certification in 2019 before the games began.
MITIGATION & OPTIMISATION
With an understanding of the local weather data and micro climate, the initial design could be modelled with a high level of detail to highlight any areas for improvement and issues that could arise.
After the first model, we worked closely with stadium architects, to develop several tweaks to the design of the stadium to aid with the movement of air over and around the stadium.
Through the use of CFD modelling it was established that there were several key factors that effected the wind speed at track level. Firstly, through the introduction of louvres that are angled to allow through a reduced amount of air as well as slowing he air speed down, allowed for the air to move through the stadium rather than funnelling over and dropping down onto the track. The introduction of walls and blocking entrances with solid door panels also reduced the influence of wind at track level.
Through several iteration of design, with feedback from K8T about there impact, a solid design could be provided that met the criteria for the athletics track.
With the design established constructed began of the redevelopment work of the stadium. During key moments in the constructed data was generated in regards to wind spped and direction both on the track and around points of the stadium.
The measurements highlighted the reasoning behind key decisions made in regards to openings that are covered and the louvres around the southern end of the facade. As the gaps and louvres were installed, the data showed the change in wind speed and direction from a track with a higher wind speed that at times both aided the athletes or impeded them greatly, to a track that was IAAF compliant and did not impede athletes.
Through this continuation of analysis with real world data the design would be perfected and establish that the design decisions aided from the continuous analysis were essential to the stadium design.