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Summary of the three considered cases_
| Case | Heat release rate | Burning time | Dimensions of the computational domain | Dimensions of the mesh cells | Number of cells in each direction |
|---|---|---|---|---|---|
| 1 | 2.34 MW | 900 s | 25×25×25 m | 0.25×0.25×0.25 m | X,Y,Z: 100 |
| 2 | 22×22×24 m | 0.2×0.2×0.2 m | X,Y: 110 | ||
| 3 | 25×25×25 m | 5 m around plume region: 0.125×0.125×0.125 m | Near the plume region: X,Y: 40 |
Relationship between D* and δx
| Case | Cell size, m δx | Heat Release Rate, kW | Characteristic fire diameter, m D* | D*/ δx |
|---|---|---|---|---|
| 1 | 0.25 | 2600 | 1.35 | 5.40 |
| 2 | 0.20 | 6.75 | ||
| 3 | 0.125 | 10.80 | ||
| 0.25 | 5.40 |