why cfd is important? - gexcon · 2020. 4. 24. · 03 what is cfd? introduction to cfd...
TRANSCRIPT
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Why CFD is Important?An introduction to CFD and FLACS
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FLACS (Flame Acceleration Software)
Key Features• Integrated explosion, dispersion and fire modeling capabilities• Consequence modeling in Full-3D geometry• Capability to import geometry• Feature to create customized gas mixtures• User friendly• Accurate and extensively validated results
Gas and Dust Explosion ModellingFire and Smoke ModellingDispersion Modelling
FLACS is a comprehensive consequence modelling tool withCFD (Computational Fluid Dynamics) in full 3D geometry.
Dispersion
simulation
with FLACS
Real event
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What is CFD?Introduction to CFD (Computational Fluid Dynamics)
CFD is the application of algorithm and numericaltechniques to simulate complex fluid phenomena.
CFD is the only model that allows for describingthe interaction of flow and geometry in detail.
CFD simulates real life processes usingfundamental conservations equations (mass, momentum & energy balances) and digital computers.
Typical result of analytical model
Typical result of 3D CFD (FLACS)
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The Importance of 3D Geometry
• Obstacles such as terrain, equipment and walls affect risk scenarios• Wind is deflected, creating low ventilation and
recirculation zones
• Dense gas can be stopped by walls – lighter gases caught under ceilings or decks
• Explosion strength is greatly dependent on confinement and congestion
Detailed 3D geometry of FLACS
Chlorine dispersion example
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Why CFD?The Benefits of CFD (Computational Fluid Dynamics)
On the Effect of Confinement and Obstruction on Ventilation
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Why CFD?The Benefits of CFD (Computational Fluid Dynamics)
On Dispersion Studies
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Why CFD?The Benefits of CFD (Computational Fluid Dynamics)
On Explosion Studies
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ADDITIONAL FLACS MODULE
FLACS Fire FLACS DustEx
FLACS Blast FLACS Risk
FLACS Dispersion
FLACS Hysdrogen
FLACS GasEx
FLACS Standard Version
FLACS Module
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FLACSContinuous Validation for more than 40 years through Testing
Hydrogen Explosion Validation Gas Explosion Validation
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FLACSContinuous Validation for more than 40 years through Testing
ExperimentJet Fire simulation
with FLACS
Experiment
Pool fire
simulation
with FLACS
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FLACSThe benefits of using FLACS
Easy Start
You can always make your owngeometry. However, instead ofstarting from zero, you can also
import your geometry from otherCAD software
Comprehensive and Dedicated for Process Safety
FLACS is the integration ofdispersion, fire and explosion
modelling software
Accurate Result
It includes all contributing and mitigating effects, such as wind
profile, water deluge, barrier, land terrain.
User Friendly
FLACS is easy to use. You do not need months of extensive training
to be able to use it.
Various ResultVisualization
Your simulation can be visualized
in 2D or 3D view.
Efficient Process
FLACS has an efficient pre-processing and reasonable
simulation times.
Improve Safety and CostEfficient
FLACS raise the true level of safetyand allows for choosing effective
design options and mitigationmeasures.
Software You Can Trust
FLACS has gone through more
than 40 years of validation.
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FLACSStudies that can be performed with FLACS
• Heating, Ventilation and Air Conditioning (HVAC) study
• Gas detection optimization study
• Explosion in offshore and onshore facilities, including support facilities (transportation)
• Jet and pool fire simulation
• Flare radiation and flame-off dispersion study
• Toxic gas dispersion
• Hydrogen safety study
• Offshore helideck study
• Smoke and gas dispersion study
• Building Risk Assessment (BRA)
• Quantitative Risk Assessment (QRA)
• and other studies from facility design phase to the operation phase
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Dispersion ModellingDipersion Onshore – effect of wind direction on transient release
Wind
Wind
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Dispersion ModellingToxic Gas Dispersion in an Offshore Facility
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Dispersion ModellingGas Detection Optimization
• Actual point and line-of-sight detectors are added in geometry, real-time results seen
• Optimal layout and philosophy are found and confirmed
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Dispersion ModellingLNG Pool Spreading
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Dispersion ModellingRelease Simulation for Emergency Mitigation
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Explosion ModellingGas Explosion in a Port
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Fire and Smoke ModellingGas Ignited on The Water Surface
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