CFD JET FAN 1
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Transcript of CFD JET FAN 1
For Construction Industry
WHY SIMULATIONS ?
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Unpredictable / Unpreventable
September 6 - Fire in
basement parking Ahmedabad April 26 - After Vadilal Sarabhai Hospital, fire in Civil Hospital March 24 - Major fire in military canteen stores March 23 - Stephen Court toll highest ever in Kolkata February 23 - Major fire at Bangalores Carlton TowersMarch 29
Fire Safety concerns BMC; serves notice to Mumbai buildings
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Ventilation and Fire Safety Systems Performance Prediction through CFD
Fire & Panic NBC : Every building shall be so constructed to avoid undue danger to life from fire, smoke, fumes or panic Panic not fire killed 9 at Bengaluru Carlton Towers(http://news.rediff.com/slide-show/2010/feb/23/slide-show-1-fire-at-bengaluru-hospital.htm)
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Ventilation and Fire Safety Systems Performance Prediction through CFD
Fire & Panic Panic is a direct result of smoke accumulation & reduced visibility Firemen immediately break windows & remove door to allow venting of smoke Natural / mechanical ventilation is the key element in reducing spread of smoke, fumes & panic
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Ventilation and Fire Safety Systems Performance Prediction through CFD
Hot Smoke Testing A building completion procedure adopted in several developed countries
But, they are conducted at a stage when the entire construction is complete; making preventive-corrective measures very difficult & costly to implement5 Ventilation and Fire Safety Systems Performance Prediction through CFD
Considerations @ Design Stage
Aspects of ventilation, smoke movement, natural air flow, thermal comfort etc. can be taken care at design stage itself Best designs would utilize local winds, natural smoke movement & minimum equipments (energy & maintenance) to make buildings comfortable & safe For complex building designs & air flow paths, CFD is an established tool to simulate & optimize Using inputs from CFD studies, multiple layout options can be examined to arrive at the most effective one
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Ventilation and Fire Safety Systems Performance Prediction through CFD
So, What is CFD?
CFD is Computational Fluid Dynamics Procedure for CFD analysis Prepare a 3D model from the provided 2D drawing & generate mesh. Setup the peak or emergency scenario by specifying boundary conditions. Solve the governing equations on cluster of computers. Post process the solution to obtain time history of desired ventilation parameters.
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Ventilation and Fire Safety Systems Performance Prediction through CFD