DIF SEK PART 4 SOFTWARE FOR FIRE DESIGN DIF SEK Part 4: Software - PowerPoint PPT Presentation

DIF SEK PART 4 SOFTWARE FOR FIRE DESIGN DIF SEK Part 4: Software for Fire Design 0 / 47

Fire design objective Fire design objective R R resistance of the structures submitted to fire resistance of the structures submitted to fire R req R req resistance required to the structures for being safe resistance required to the structures for being safe DIF SEK Part 4: Software for Fire Design 1 / 47

R R Chain of events during a fire Chain of events during a fire Loads Θ Steel columns time 1: Ignition 2: Thermal action 3: Mechanical actions R time 6: Possible 4: Thermal 5: Mechanical collapse response response Calculation methodologies - Eurocodes Calculation methodologies - Eurocodes DIF SEK Part 4: Software for Fire Design 2 / 47

R req Safety criterion R req Safety criterion R required : “R” is assumed to be satisfied where the load bearing function is maintained during the required time of fire exposure. Prescriptive approach: Performance based national fire regulations approach: fire safety engineering DIF SEK Part 4: Software for Fire Design 3 / 47

Fire design software - Classification Fire design software - Classification The most common classification of them is broken down in five categories: • Fire thermal models R R • Fire resistance models R req R req • Egress models • Detector response models (performance based) (performance based) • Miscellaneous models DIF SEK Part 4: Software for Fire Design 4 / 47

Fire thermal models Fire thermal models DIF SEK Part 4: Software for Fire Design 5 / 47

Fire thermal models Fire thermal models Fire thermal models Nominal Standard temperature – time temperature – curve time curves External fire curve (Prescriptive Hydrocarbon curve rules) Compartment Simplified fire fires models Natural fires Localised fires (Performance based rules) Zone models Advanced fire models Field models DIF SEK Part 4: Software for Fire Design 6 / 47

Zone models Zone models DIF SEK Part 4: Software for Fire Design 7 / 47

Zone models Zone models There are two principal types of zone models: • Two Zone models: fire compartment considered as divided in two zones (hot - cold) with homogeneous properties • One Zone models: fire compartment considered as a furnace Z There are one compartment models (only one compartment) H and multi-compartment models Capa superior m U , T U , V U , Q C E U , ρ U (considered several adjoining Q R compartments) m OUT,U Z S p Q m OUT,L m OUT,L m p Resolution of equations Z P m IN,L m L , T L , V L , - Mass balance E L , ρ L Capa inferior - Energy balance 0 DIF SEK Part 4: Software for Fire Design 8 / 47

Zone models - Ozone Zone models - Ozone Software sheet – general description Name OZone Version 2.2.2 Year 2002 Country Luxembourg Language English System Windows Size 5 MB Authors J. F. Cadorin, J. M. Franssen (Uni. Liège) L.G. Cajot, M. Haller, J.B. Schleich Organisation Arcelor LCS Research Centre Application field Fire Thermal model - Zone Availability Free – www.ulg.ac.be Free – www.sections.arcelor.com Contact Arcelor ASC: asc.tecom@arcelor.com Formulation Based on mass and energy balance equations Short description Model to predict the thermal action of a defined fire. Heat transfer to simple steel elements and time to collapse (ENV 1993-1-2) incorporated DIF SEK Part 4: Software for Fire Design 9 / 47

Ozone - Main menu Ozone - Main menu DIF SEK Part 4: Software for Fire Design 10 / 47

Ozone - Case study Ozone - Case study Fire scenario: fire in a restaurant at third storey Design fire: fully developed fire - t α growth phase Objective: fire resistance of steel beams (Requirement of R90) Fire compartment definition: Fire area DIF SEK Part 4: Software for Fire Design 11 / 47

Ozone - Input data: Definition of Fire Ozone - Input data: Definition of Fire DIF SEK Part 4: Software for Fire Design 12 / 47

Ozone - Input data: Ozone - Input data: Criteria for switching from 2 zones to 1 zone Criteria for switching from 2 zones to 1 zone DIF SEK Part 4: Software for Fire Design 13 / 47

Ozone - Output Ozone - Output Switch from 2 zones to 1 zone: 120” (fire governed by ventilation) DIF SEK Part 4: Software for Fire Design 14 / 47

Field models Field models DIF SEK Part 4: Software for Fire Design 15 / 47

Field models Field models Fire Model Fire Field Model + CFD Code General description of fire phenomenon. Physical variables description . Specific CFD Physical models adjusted to fire problems: SOFIE, FDS... CFD Code Types General CFD More physical models and material properties, selected and adjusted by user to fire modelling: Fluent, CFX,PHOENIX.. DIF SEK Part 4: Software for Fire Design 16 / 47

Field models - Fluent Field models - Fluent Software sheet – general description Name Fluent Version 6.1.22 Year 2004 Country USA Language English System Windows/UNIX Organisation Fluent Inc. Application field Fire Thermal model - Field. Availability Commercial software Contact www.fluent.com Formulation Based on mass and energy balance equations. Short description General purpose CFD DIF SEK Part 4: Software for Fire Design 17 / 47

Fluent - Input data Fluent - Input data Definition of materials, physical models and boundary conditions is required. Some of them shown in this slide DIF SEK Part 4: Software for Fire Design 18 / 47

Fluent- Output data Fluent- Output data Radiation values User friendly pre and post processing, but a deep knowledge on fire engineering and CFD is required. Examples of post processing Smoke control: CO concentration Predicted steel temperatures DIF SEK Part 4: Software for Fire Design 19 / 47

Fire resistance models Fire resistance models DIF SEK Part 4: Software for Fire Design 20 / 47

Fire resistance models (FRM) Fire resistance models (FRM) Simple Tabulated Advanced Structural design procedure calculation data methods methods Member analysis Calculation of YES YES YES mechanical actions and Prescriptive Analysis of part YES (if boundaries NO YES based rules of the structure available) Selection of Analysis of entire mechanical NO NO YES structure actions YES (if Member analysis Calculation of NO YES available) mechanical actions and Performance Analysis of part boundaries NO NO YES based rules of the structure Selection of Analysis of entire mechanical NO NO YES structure actions DIF SEK Part 4: Software for Fire Design 21 / 47

Simplified FRM - Elefir Simplified FRM - Elefir Software sheet – general description Name Elefir Version 2.1 Year 1998 Country Belgium Language English System Windows Size 8 MB Authors D. Pintea, L. Mievis, G. Gustin, J. M. Franssen Organisation University of Liege Application field Fire resistance model (simplified) Availability Free – www.ulg.ac.be Contact University of Liege - www.ulg.ac.be Formulation Based on ENV 1993-1-2 (eurocode 3) Short description Software for the calculation of the fire resistance of simple steel elements made of open sections. DIF SEK Part 4: Software for Fire Design 22 / 47

Elefir - Main menu Elefir - Main menu DIF SEK Part 4: Software for Fire Design 23 / 47

Elefir - Input data Elefir - Input data Load input window Protection input window DIF SEK Part 4: Software for Fire Design 24 / 47

Elefir - Output data Elefir - Output data DIF SEK Part 4: Software for Fire Design 25 / 47

Simplified FRM - Potfire Simplified FRM - Potfire Software sheet – general description Name Potfire Version 1.11 Year 2001 Country France Language English System Windows Size 15 MB Authors G. Fouquet, G. Tabet, B. Zhao, J. Kruppa Organisation CTICM, CIDECT, TNO Application field Fire resistance model (simplified) Availability Free – www.cidect.org Contact CIDECT - www.cidect.org Formulation Based on ENV 1994-1-2 Annex G Short description Fire resistance duration of unprotected filled hollow section columns DIF SEK Part 4: Software for Fire Design 26 / 47

Potfire - Main menu/Input-output data Potfire - Main menu/Input-output data 2º 1º 3º 4º DIF SEK Part 4: Software for Fire Design 27 / 47

Simplified FRM - AFCC Simplified FRM - AFCC Software sheet – general description Name AFCC Version 3.06 Year 2004 Country Luxembourg Language English System Windows Size 2.5 MB Authors H. Colbach Organisation Arcelor LCS Research Centre Application field Fire resistance model (simplified) Availability Free – www.sections.arcelor.com Contact Arcelor ASC: asc.tecom@arcelor.com Formulation Based on ENV 1994-1-2 Short description Composite columns fire design DIF SEK Part 4: Software for Fire Design 28 / 47

AFCC - Main menu/input data AFCC - Main menu/input data Panel control . Reinforced steel DIF SEK Part 4: Software for Fire Design 29 / 47

AFCC - Output data AFCC - Output data Results Write report Drawing detail DIF SEK Part 4: Software for Fire Design 30 / 47