要旨

In this work, a new theory is proposed for determining the instantaneous turbulent flame speed using a simplified but physics-based approximation of the dynamics of the transient turbulent flame brush thickness. A summary of the main points of this new model’s derivation are reviewed, which can be thought of as an extension of Damköhler’s steady state flame speed model to include the effect of the transient development of a turbulent flame. The resulting flame brush thickness dynamics model is compared against historical measurements available in the literature as well as against 3D realizations of resolved turbulent flame propagation using the instantaneous G-equation. This comparison shows the newly derived model can describe both the transient and steady state turbulent flame speed across a range of conditions with a singular modeling form and is therefore expected to find utility as turbulent flame speed model for combustion devices where representation of the developing turbulent flame is of crucial importance.

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著者(所属)

• Phillip AQUINO（Honda Development and Manufacturing of America, LLC）

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Honda R&D Technical Review　Vol.35 収録 (56 - 68)

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