### 7.13.2. Laminar Flame Thickness

The thickness of the laminar flame has to be provided in order to close the ITNFS model. For ideal gases Blint’s correlation is a reasonable approximation:

| (7–81)

Where is the Thickness Multiplier with a default value of 2.0, is the Temperature Exponent with a default value of 0.7 and is the ‘diffusive’ flame thickness, which is scaled by a correction factor accounting for the thermal expansion ratio in order to obtain the effective laminar flame thickness. Additional information on laminar flame thickness calculation can be found in the literature, for example in [187].

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