1Arcelor Profil LuxembourgResearch Centre

Software OZone v2.2

2

Calculation of gas temperatures in the event of fire and corresponding steel temperatures

Short description

EN1991-1-2 and EN1993-1-2Standards

EnglishLanguage

2.2.5Version

OZoneName

Calculation of Temperatures distribution

3

Fire Engineering Software �OZone V2.2�Fire Engineering Software �OZone V2.2�

WWW. ARCELOR.COM/sections

4

Scope of the software

! Calculation of Gas temperature in Fire Compartment (Zone Model)• Localised fires

• Compartment fires

• Iso Fire

! Heating of Steel sections• Unprotected & Insulated sections

• Based on localised, Iso fire or zone temperature

! Member analysis • Compression and Tension

• Bending with or without axial compression

5

Definition of Fire compartmentDefinition of Fire compartment

6

Characteristics of the Fire CompartmentCharacteristics of the Fire Compartment

Fire resistant enclosuresdefining the fire compartmentaccording to the national regulations

Material properties of enclosures: c, ρ, λ

Definition of Openings

7

OZone - Input data: Definition of the GeometryOZone - Input data: Definition of the Geometry

8

Definition of Fire actionDefinition of Fire action

9

OZone - Input data: Definition of FireOZone - Input data: Definition of Fire

10

INPUT: Rate of Heat Release CurveINPUT: Rate of Heat Release Curve

RHR [MW]

Time [min]0

11

Definition of Fire actionDefinition of Fire action

12

OZone - Input data: Criteria for switching from 2 zones to 1 zoneOZone - Input data: Criteria for switching from 2 zones to 1 zone

13

Behaviour of advanced fire ModelsBehaviour of advanced fire Models

LOCALISED FIRE

LOCALISED FIRE FULLY ENGULFEDCOMPARTMENT

The Fire stays localised The Fire switch to a fully engulfed fire

14

Criteria for switching from 2 zones to 1 zone and FlashoverCriteria for switching from 2 zones to 1 zone and Flashover

15

Run of Gas temperature ModuleRun of Gas temperature Module

16

OZone � Results Gas TemperaturesOZone � Results Gas Temperatures

θHot

θCold

17

Definition of heatingDefinition of heating

18

Definition of heatingDefinition of heating

19

Definition of heated membersDefinition of heated members

20

Definition of unprotected membersDefinition of unprotected members

21

Definition of protected membersDefinition of protected members

22

Run of Steel temperature ModuleRun of Steel temperature Module

23

OZone � Results Steel TemperaturesOZone � Results Steel Temperatures

24

Definition of membersDefinition of members

25

Definition of membersDefinition of members

26

Run of Element ModuleRun of Element Module

27

OZone � Results Fire resistance

OZone � Results Fire resistance