Research Article
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 |
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