Computational Fluid Dynamics Modelling Utilised for Phoenix
Added on September 14th, 2023
Category Case Studies
By Bijan Fard
Located just over a mile from Canary Wharf in the heart of London’s thriving East End, Phoenix is the latest collection of new 1, 2- & 3-bedroom apartments by Fairview New Homes.
As part of the project, FDS designed and supplied a natural code compliant ventilation solution, corridor environmental systems and mechanical car park ventilation systems, as well as providing a complete installation, commissioning and maintenance service.
FDS were able to justify the specification of a mechanical smoke ventilation system for the car park area with Computational Fluid Dynamics (CFD) Modelling. The report was intended to document the proposed smoke clearance conditions as required by Approved Document B (ADB) and the environmental conditions as required by Approved Document F (ADF).
In this case, Fire Field (CFD) Modelling was carried out to show some of the typical worse case scenarios that could be experienced in enclosed Car Parks and the effectiveness of various mechanical ventilation systems in mitigating the effects of both fires and CO exhausts within the structure.
The smoke ventilation on the residential development was by natural means providing a reliable and cost-effective solution which met the requirements of Approved Document B. The system utilised a natural smoke shaft system with an Automatic Opening Vent (AOV) at each level. Activation of a smoke detector signalled the AOV on the level on the fire floor to open and the system was designed to lock out ensuring AOV’s on all other floors remained closed. A louvered ventilator at the head of the smoke shaft opened to allow the escape of smoke. In addition, a penthouse louvered ventilator at the head of the residential stair ensured the escape route remain ventilated.
The smoke ventilation system was also utilised to provide improved environmental conditions within the corridor by drawing heat from the corridor and introducing comfort ventilation through the corridors. Replacement fresh air is introduced via the penthouse louvred vent at the head of the stair, which allows fresh air to enter to the building. The advantage of this system is the cost efficiency in utilising the smoke ventilation system to create a healthier and more comfortable environment whist still meeting all the life safety requirements of the Approved Document B (ADB).
The project started in January 2017 and finished in March 2019, taking over two years before full handover. Overall FDS was able to provide a full smoke ventilation solution, bridging the gap between concept design and practical system installation.