Numerical Study on the Required Surrounding Gas Conditions for Stable Autoignition of an Ethanol Spray

Table 3

Specification of the mesh in the computational domain.

Base grid	X		4 mm
	Y		4 mm
	Z		4 mm
FE (fixed embedding) fine mesh	Entity type		Cone: “INJECTOR”
	Scale : base grid × 2^∧(–scale)		3 : 4 mm × 2^–3 = 0.5 mm
	Radius1		1 mm
	Radius2		23 mm
	Length		160 mm
AMR (adaptive mesh refinement)	Velocity	Max. embedding scale	6 : 4 mm × 2^–6 = 0.0625 mm
		Subgrid criterion	1.0 m/sec
	Temperature	Max. embedding scale	6 : 4 mm × 2^–6 = 0.0625 mm
		Subgrid criterion	2.5 K
	Species	Max. embedding scale	5 : 4 mm × 2^–5 = 0.125 mm
		Subgrid criterion	0.0001 mole fraction