If Sij represents the rate of deformation, μ represents the dynamic viscosity and \(\vec{V}\), the velocity of the flow, What does the terms div(2μ\(\vec{V}\)Sij) and 2μSij account for?(a) The effect of turbulent stresses(b) The effect of viscous stresses(c) The effect of Reynolds stresses(d) The effect of kinetic energyI had been asked this question by my school principal while I was bunking the class.Query is from Turbulence Modelling topic in division Turbulence Modelling of Computational Fluid Dynamics

If Sij represents the rate of deformation, μ represents the dynamic v

1.	If Sij represents the rate of deformation, μ represents the dynamic viscosity and \(\vec{V}\), the velocity of the flow, What does the terms div(2μ\(\vec{V}\)Sij) and 2μSij account for?(a) The effect of turbulent stresses(b) The effect of viscous stresses(c) The effect of Reynolds stresses(d) The effect of kinetic energyI had been asked this question by my school principal while I was bunking the class.Query is from Turbulence Modelling topic in division Turbulence Modelling of Computational Fluid Dynamics
Answer» The correct option is (b) The effect of viscous stresses Easiest EXPLANATION: The term div(2μ\(\vec{V}\)SIJ) represents the transport of KINETIC energy due to viscous stresses. The term 2μSij represents the viscous dissipation of kinetic energy. Together, these TWO TERMS represent the effect of viscous stresses on kinetic energy.

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