Variable	Name	Description	Units
x	x	distance from the centreline	mm
Yi	i (species name)	species mass fraction	(-)
Α	alpha	thermal diffusivity	m2/s
Yi	i (species name)	species mass fraction	(-)
c	c	progress of reaction based on temperature	(-)
∇ c	dc	surface density function	1/m
X	chi	scalar dissipation	1/s
ρ	rho	density	kg/m3
∇ T	dT	temperature gradient	K/m
ρ	rho	scalar dissipation	kg/m3
ϕ	phi	equivalence ratio	(-)
Z	Z	mixture fraction	(-)