Presentation Jal Sports

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PHOENICS User Conference 2004

Using CFD for Sports Arena

and Stadia Design

Eric Jal

Connell Wagner, Melbourne, Australia

3-5 May 2004 - Melbourne, Australia


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Occupancy issues in sports stadia andleisure complexes becoming paramount

Increasingly common to use CFD in the

design process to assess:- natural ventilation (comfort)

mechanical ventilation

pitch ventilation exhaust discharge

fire safety

Introduction


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PHOENICS CFD code has been usedTECPLOT used for results visualisation

Several case studies will be presented:-

Telstra Dome - Melbourne, Australia Lang Park - Brisbane, Australia

MCG - Melbourne, Australia

Wembley Stadium - London, UK

MSAC Extension - Melbourne, Australia

Oasis Arena - Sydney, Australia

Casey Aquatic Centre - Melbourne, Australia

Project Case Studies


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Telstra Dome - Melbourne, Aus tral iaCase Study - Telstra Dome


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Located within the Melbourne Docklandsurban re-development precinct

Designed and built within 2 years

Used for AFL/soccer/rugbycricket and concert events

Seating capacity of 52,000

including a movable lowerstand tier of 12,500 seats

A 167m by 132m retractable pitch roof

(can open & close in under 10 minutes)

Telstra Dome - Background


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When roof is closed it becomes a fullyenclosed all weather indoor facility

Occupancy comfort and life

safety needs considerationOther similar stadia normally

include mechanical ventilation

Concerns about large capital costs andongoing energy consumption led to a

design study for justifying an effective

passive (natural) ventilation solution

Telstra Dome - Design Scope


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Natural Ventilation : Full Stadium - No Wind (35

o

C Day) - Roof Closed

Telstra Dome - Design Analysis


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Fire Safety : 15MW Pitch Fire - Roof Closed

Telstra Dome - Design Analysis


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Location & spacing of roof vents optimisedArchitectural design of roof vents and

facade openings promote air movement

which enhances occupant comfort for awide range of environmental conditions

Temperature rises around bowl arena not

deemed excessive (within 5o

C) assumingthe patrons are suitably attired consistent

for a naturally ventilated facility

Life safety tenability criterion also satisfied

Telstra Dome - Analysis Summary


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Lang Park Stadium - Brisbane, Australia

Case Study - Lang Park


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Recently redeveloped for increasedseating capacity

Designed to be capable in the future of

incorporating a retractable pitch roofCFD modelling was conducted to

determine natural ventilation openings

necessary to provide spectator comfortScenarios simulated for different

environmental conditions for both an

open stadium and with a pitch roof

Lang Park - Design Scope


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Natural Ventilation : Full Stadium - No Wind (32

o

C Day) - No Roof

Lang Park - Design Analysis


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Wemb ley Stadium - London , UK

Case Study - Wembley Stadium


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Currently in the process of being upgradedand redeveloped

Engaged in fire engineering design review

to address issues associated with theBuilding Regulation compliance

CFD modelling was conducted for fire

scenarios within the concourse atriumScenarios also performed for assessing

mechanical smoke extraction system

requirements within service ring road

Wembley Stadium - Design Scope


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Fire Safety : 3MW Concourse Atrium FireWembley Stadium - Design Analysis


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Fire Safety : 20MW Underground Service Ring Road FireWembley Stadium - Design Analysis


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MSAC Extens ion - Melbourne, Aus tral ia

Case Study - MSAC Extension


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Venue is to be upgraded in readiness for2006 Commonwealth Games

Outdoor pool arena is being proposed

with lightweight roof and open sidesFor energy impost and

sustainable development

considerations naturalventilation is postulated

CFD modelling undertaken in order to

demonstrate the viability of design

MSAC Extension - Design Scope


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Natural Ventilation : No Wind (15oC Day)

MSAC Extension - Design Analysis


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Casey Aquat ic Centre - Melbourne, Aus tral ia

Case Study - Casey Aquatic Centre


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Ventilation within an indoor pool needs toensure sufficient fresh air requirements

Necessary for removal of water vapour (RH

control) and chemical vapoursDifferent mechanical

ventilation systems

configurations wereanalysed with CFD

Establish air movement distribution and

show undesirable stagnant flow regions

Casey Aquatic Centre - Design Scope


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Mechanical Ventilation : Push-Pull System

Casey Aquatic - Design Analysis


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Oasis A rena - Sydney, Aus tral ia

Case Study - Oasis Arena


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Performance based approach used tosatisfy BCA fire design requirements

CFD modelling was conducted to ensure

indefinite tenability conditions aremaintained within concourse/vomitories

Provide assistance in optimising the

smoke extraction system in terms of sizeand capacity

Consequently gives indication of expected

capital cost outlay of mechanical systems

Oasis Arena - Design Scope


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Fire Safety Analysis : 10MW Stage Fire

Oasis Arena - Design Analysis


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MCG Redevelopment - Melbourne, Aus tral ia

Case Study - MCG Redevelopment


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Northern side of stadium currently beingredeveloped for utilisation at the 2006

Commonwealth Games

Several CFD modelling studies done for:- Ventilation (thermal comfort)

Plant room exhaust dispersion

Pitch ventilation

Fire life safety

Onus of design process to maximise ESD

initiatives and optimise resource efficiency

MCG Redevelopment - Design Scope


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Plant Room Exhaust : 4m/s Northerly Wind

MCG Redevelopment - Design Analysis


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Pitch Ventilation : 4m/s Northerly Wind

MCG Redevelopment - Design Analysis


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Project case studies have shown the use ofCFD as an important part of the engineering

design process of sports stadia/arenas

Issues relating to ventilation, occupancycomfort and life safety can be addressed

Facilitates sustainable design technology

solutions by avoiding/limiting mechanical

ventilation energy usage as far as possible

Can be promoted as worlds best practice

and used as a benchmark for stadia design

Conclusions


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Thankyou

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Presentation End


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Presentation Jal Sports