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The realizable k-ε model falls into which of these categories?

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The realizable k-ε model falls into which of these categories?

(a) Non-linear two-equation turbulence models

(b) Linear two-equation turbulence models

(c) Non-linear three-equation turbulence models

(d) Linear two-equation turbulence models

This question was addressed to me during an interview for a job.

The origin of the question is Turbulence Modelling topic in chapter Turbulence Modelling of Computational Fluid Dynamics

1 Answer

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Right choice is (a) Non-linear two-equation turbulence models

Easy explanation: There is a division of the k-ε models which are non-linear. The transport equations are non-linear in these models. The realizable k-ε model also comes under this non-linear k-ε models.

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