TagFire

Table of Contents

• tag fire
  • description
  • examples

tag fire

attribute	role	description
type	required	must be burningbox or spread_square_box

in case of burningbox, which produces a box with a constant HRR:

attribute	role	description
cx, cy	required	x & y coordinates of the center of the box
lz	required	z coordinate of the bottom of the box
width	required	width of the box
height	required	height of the box
hrr	required	heat release rate of the fire

in case of spread_square_box, which produces a ~t^2 HRR with a spread over the surface:

attribute	role	description
cx, cy	required: x & y coordinates of the center of the box
lz	required	z coordinate of the bottom of the box
width_x, width_y	required	width of the box in x and y
height	required	height of the box
delta	implicit	grid spacing
hrr and alpha	required	heat release rate and parabolic prefactor (~alpha*t^2 ) of the fire
from_file	required	read in heat release rate curve from csv file
hrr_factor	optional	multiplier for the hrr curve

description

A box is described and a fire fueled by methane placed on top of it.

This tag allows simple definition of a standard fire and writes all the required statements to the FDS input file.

examples

The following node creates a fire where the burning surface increases with time to produce a ~t^2 HRR curve up to a maximal value hrrmax.

<fire type="’spread_square_box ’" cx=’1.5’ cy=’1.5’ lz=’0.0’ width_x=’1.0’ width_y=’1.6’ height=’0.5’
hrrmax=’1000’ alpha=’10’ />