When k and ε values are not available, for inlet boundary conditions, they are ____________(a) obtained from turbulence intensity(b) assumed to be zero(c) assumed to be unity(d) obtained from Reynolds numberThe question was posed to me in an international level competition.My doubt is from Turbulence Modelling topic in chapter Turbulence Modelling of Computational Fluid Dynamics

When k and ε values are not available, for inlet boundary conditions,

1.	When k and ε values are not available, for inlet boundary conditions, they are ____________(a) obtained from turbulence intensity(b) assumed to be zero(c) assumed to be unity(d) obtained from Reynolds numberThe question was posed to me in an international level competition.My doubt is from Turbulence Modelling topic in chapter Turbulence Modelling of Computational Fluid Dynamics
Answer» The CORRECT answer is (a) obtained from TURBULENCE intensity Explanation: At the inlet BOUNDARY conditions, the k and ε values must be specified for the k-ε model. In most of the industrial CFD applications, these values will not be known. So, they are obtained from the turbulence intensity and the characteristic length of the model.

Discussion

No Comment Found

Related InterviewSolutions

The Smagorinsky-Lilly SGS model is ___________(a) Dissipative(b) Convective(c) Diffusive(d) Convective and diffusiveI have been asked this question in an interview.My question comes from Turbulence Modelling in section Turbulence Modelling of Computational Fluid Dynamics
How many extra stress terms occur due to the LES filtering operation?(a) No extra terms(b) Four terms(c) Three terms(d) Two termsI had been asked this question during an interview.I want to ask this question from Turbulence Modelling in chapter Turbulence Modelling of Computational Fluid Dynamics
When compared to the standard ε-equation, the transformed ω-equation has _________(a) the same number of terms(b) an extra dissipation term(c) two extra source terms(d) an extra source termThe question was posed to me in an interview.I'd like to ask this question from Turbulence Modelling topic in section Turbulence Modelling of Computational Fluid Dynamics
The term representing the effect of small-scale eddies in diffusion terms of the k transport equation and ε transport equations take the values ___________ and ____________(a) 1.49, 1.49(b) 1.39, 1.39(c) 1.39, 1.49(d) 1.49, 1.39This question was addressed to me in an international level competition.I'd like to ask this question from Turbulence Modelling in chapter Turbulence Modelling of Computational Fluid Dynamics
The governing equations which are averaged using these methods of averaging are used in _____________(a) DNS model(b) SST model(c) RANS model(d) k-ε modelThis question was addressed to me during an interview for a job.This interesting question is from Turbulence Modelling in portion Turbulence Modelling of Computational Fluid Dynamics
For unsteady turbulent flows, which of these averaging method is used?(a) Time averaging(b) Ensemble averaging(c) Spatial averaging(d) Volume averagingI got this question during an online interview.This key question is from Turbulence Modelling topic in chapter Turbulence Modelling of Computational Fluid Dynamics
The k-ε model focuses on the mechanism which affects ____________(a) the Reynolds stresses(b) the cross stresses(c) the transport of scalar fluxes(d) the turbulent kinetic energyI have been asked this question in an interview for internship.This is a very interesting question from Turbulence Modelling topic in portion Turbulence Modelling of Computational Fluid Dynamics
The cut-off width dependent on the finite volume grid size is equal to _____________(a) the square of the grid cell volume(b) the cube of the grid cell volume(c) the square root of the grid cell volume(d) the cube root of the grid cell volumeI got this question in examination.My doubt is from Large Eddy Simulation for Turbulent Models in portion Turbulence Modelling of Computational Fluid Dynamics
In high Reynolds number turbulent flows _______________ terms dominate.(a) diffusion terms(b) convection terms(c) viscous stress terms(d) turbulent effect termsI have been asked this question during an internship interview.My question is based upon Turbulence Modelling in division Turbulence Modelling of Computational Fluid Dynamics
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

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment