flacs-fire - gexcon 2015... · flacs-fire has been validated, benchmarked and tested by internal...

FLUG 3rd - 4th November 2015, Shanghai China

FLACS-FireDjurre SiccamaGexcon R&D and Software

VP Products


Introduction to FLACS-FireGOAL:

Provide FLACS users with an efficient complete toolbox for dispersion, explosion and fire modelling.

►Calculation times in hours/days and not weeks/months

►User friendly interface and quick learning curve

►More realistic modelling vs. emperical tools

►Especially suited for industrial type fires including high momentum jet fires


FLACS-Fire Development time-line

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

FLACS-Fire development started

Official ReleaseFLACS-Fire

ExternalBeta testing

Continuous development, optimisation, validation and testing

Internal Beta testing

Today


FLACS-Fire Capabilities

►Jet fires

►Poolfire model (fully coupled model included)

►6-Flux and DTM radiation models

►Output: Temperature, radiation, toxic concentrations, soot, visibility, etc.

►Commercial Release date: September 2014


FLACS - FIREFire Model

Flow

Heat Transfer

Turbulence

Continuity & Momentum

Energy Equation

k-epsilon model

Combustion

Radiation

Radiativeproperties

Eddy Dissipation Concept (EDC)

Discrete Transfer Model (DTM)

Soot Formation-oxidation Model (FOX)

6-Flux Radiation Model

Compressible Solver

Incompressible Solver

Uncoupled WSGGM

Coupled WSGGM

FLACS-Fire: Program flow chart

FLACS RANS Model


Summary validation► Sub-model validation: DTM Radiation model

2-D square cavity (2 cases) Box-shaped experimental furnace (2 cases) L-shaped geometry (3 cases) Cube (4 cases) 3-D rectangular enclosure with non-uniform mixtures of CO2 and H2O (3 cases) 3-D enclosure with non-uniform mixtures of CO2, H2O and soot (8 cases) Parameters validated: Radiative source term (input to enthalpy equation), radiative heat flux

► Jet Fire validation cases

Small scale Jet fire in cross wind (2 cases) Large-scale field experiments (1 case) SINTEF Impinging propane jet fire (9 cases) HSL Propane flash fire (2 cases) Large scale LNG Flare (7 cases) SINTEF Enclosure jet fire (2 cases) Steckler compartment fire (2 cases) Ethylene jet Fire (2 cases)

► Parameters validated: Gas temperature, mixture fraction, flame length, flame shape, velocities, radiative heat flux, total heat flux, heat dose, species concentration of H2O and CO2


Application areas► Passive Fire Protection (PFP) optimization*

► Flare studies

► Escape route impairment (heat, smoke, toxic, visibility)

► Vessel heat up modelling*

► Risk based fire modelling*

► Fire and smoke detection*

► Accident investigation

► Visualisation, hazard awareness, training

* Requires additional post-processing


Sensitivity to DTM ray number

69k cells; 48 RaysCPU time: 0.35 hrDTM: 25%Memory: 200MB

69k cells; 75 RaysCPU time: 0.4 hrDTM: 35%%Memory: 300MB



69k cells; 432 RaysCPU time: 1.0 hrDTM: 75%Memory: 1.5 GB

69k cells; 4000 RaysCPU time: 7.4 hrDTM: 97%Memory: 14.6 GB


FLACS-Fire demo

Radiation

Combustion

Soot

Conduction


Application areas

Scenario: Jet fireRelease: Natural GasInitial rate: 24 kg/sDuration: 60 sec


Application areas

Scenario: Pool fireRelease: Crude oilPool size: ± 200 m2

Duration: 45 sec


Application areas

Scenario: Pool fireRelease: NG condensatePool size: ± 725 m2

Duration: 60 sec


Application areas


Application areas

Scenario: Jet fireRelease: Natural GasInitial rate: 47 kg/sDuration: 80 sec


Application areasScenario: Pool fireRelease: LNG


Application areasScenario: Pool fireRelease: Crude oilPool size: ± 2000 m2

Duration: 45 sec


FLACS-Fire Structural response

►Proof of concept FLACS => Impetus FEA Note: Commercial coupling tool not yet available!


FLACS-Fire roadmap (preliminary)

Jan Feb Mar Apr May June July August Sept Oct Nov Dec

Product releases

FLACS-Fire

Product Roadmap

2015

FLACS-Fire 10.3r3

Hydrocarbon absorbtion (1 month)

Soot ModelAdditional validation

(1-3 months)

Blind validation Statoil Oil barrel experiments (2-3 months)

Conduction model (1-2 months)

FLACS 10.4

Uncoupled Pool Fire

(1 month)

Coupled Pool Fire,PM3 (1-3 months)

Validation document (Internal Version) (3 months)

Validation document

(External 1m)

Coupled Pool Fire,PM1 (1-3 months)

Modelling of lift-off, use of detailed chem mech(1-3 months)

Two stage chemistry with EDC (1-3 months)

Validation document(External 1m)

Validation document (Internal)

Blind validation

FLACS-Fire 10.4r2

Enter Statoil approval process

Update Validation documents

DTM partial porosities

Maintenance and other improvements


Summary

► FLACS-Fire is available now

► FLACS-Fire has been validated, benchmarked and tested by internal and external consultants

► Efficient because similar workflow can be used as for other FLACS studies

► Easy and quick to extend your existing capabilities to CFD fire studies and provide additional value to clients


Q&A and feedback

FLACS-Fire Presentation 2015

Thank you for your attention!


Additional Slides


25

Standards:NORSOK Z-013: Risk- and emergency preparedness analysis

►Requirements for Probabilistic Fire analysis:

25


Fire risk assessment Procedures

►FABIG TN 11 (depricated)

►FABIG TN 13


Flare Impact Study

►Standards

API RP 520

API RP 521

API RP 537


Flare Impact Study

flacs-fire - gexcon 2015... · flacs-fire has been validated, benchmarked and tested by internal...

Documents