The terms accounting for turbulence effects contain ____________(a) Reynolds stresses(b) Turbulent kinetic energy(c) Dissipation of turbulent kinetic energy(d) Length scale termsI got this question during an interview.This is a very interesting question from Turbulence Modelling topic in division Turbulence Modelling of Computational Fluid Dynamics

The terms accounting for turbulence effects contain ____________(a) Re

1.	The terms accounting for turbulence effects contain ____________(a) Reynolds stresses(b) Turbulent kinetic energy(c) Dissipation of turbulent kinetic energy(d) Length scale termsI got this question during an interview.This is a very interesting question from Turbulence Modelling topic in division Turbulence Modelling of Computational Fluid Dynamics
Answer» Correct option is (a) Reynolds stresses Explanation: The terms ACCOUNTING for turbulence stresses are \(div(\RHO \vec{V} \overline{u_{i}^{‘} u_{J}^{‘}})\) and \(\rho \overline{u_{i}^{‘} u_{j}^{‘}}.div(ρ\vec{V} \overline{u_{i}^{‘} u_{j}^{‘}})\) represents the turbulent TRANSPORT of kinetic energy by means of Reynolds stresses. \(\rho \overline{u_{i}^{‘} u_{j}^{‘}}\) represents the net decrease of kinetic energy due to deformation work by Reynolds stresses. Both of these terms contain the Reynolds stress term \(\rho \overline{u_{i}^{‘} u_{j}^{‘}}\).

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