Related InterviewSolutions

• For which of these flows, periodic or cyclic boundary conditions are applicable?(a) External flow over objects(b) Swirling flow inside a cylindrical furnace(c) Free surface flows(d) Buoyancy driven flowsThis question was addressed to me in final exam.This interesting question is from Boundary Conditions in portion Boundary Conditions of Computational Fluid Dynamics
• Which of these conditions is used to find the velocity component of the boundary while using constant pressure boundary condition?(a) Conservation of angular momentum(b) Conservation of linear momentum(c) Energy conservation(d) ContinuityI had been asked this question in an internship interview.This interesting question is from Boundary Conditions topic in portion Boundary Conditions of Computational Fluid Dynamics
• Which of these is true for an impermeable wall?(a) \(\vec{V}=0\) above the surface(b) \(\vec{V}=0\) at the surface(c) \(\vec{V}.\vec{n}=0\) at the surface(d) \(\vec{V}.\vec{n}=0\) above the surfaceThe question was asked by my college professor while I was bunking the class.My query is from Boundary Conditions topic in chapter Boundary Conditions of Computational Fluid Dynamics
• If we are solving a k-ε model, the values of k and ε _________(a) are either specified or estimated at the inlet(b) are either specified or estimated at the outlet(c) need not be specified or estimated anywhere(d) are not estimatedI have been asked this question in homework.The query is from Boundary Conditions topic in chapter Boundary Conditions of Computational Fluid Dynamics
• Usually, in the inlet boundary conditions ___________ are known.(a) gradients of flow properties(b) diffusive fluxes of properties(c) convective fluxes of properties(d) flow propertiesThis question was posed to me at a job interview.The query is from Boundary Conditions in chapter Boundary Conditions of Computational Fluid Dynamics
• What is the shear force of a fluid (velocity \(\vec{u}\)) near the wall for a moving wall (velocity (\(\overrightarrow{u_{wall}}\)))?(a) \(\vec{F}=-\mu\frac{\vec{u}}{\Delta y}\times area\)(b) \(\vec{F}=-\mu\frac{\vec{u}-\overrightarrow{u_{wall}}}{\Delta y}\times area\)(c) \(\vec{F}=-\mu\frac{\vec{u}-\overrightarrow{u_{wall}}}{\Delta y}\)(d) \(\vec{F}=-\mu\frac{\vec{u}}{\Delta y}\)This question was posed to me in an internship interview.This interesting question is from Boundary Conditions in chapter Boundary Conditions of Computational Fluid Dynamics
• Which of these is the best practice regarding outlet boundaries?(a) Outlet boundaries should be at the exact outlet of the geometry(b) Outlet boundaries should be set as close as possible to the inlet boundaries(c) Outlet boundaries should be set as far as possible to the physical geometry(d) Outlet boundaries should be set as close as possible to the physical geometryThis question was addressed to me in an interview.Question is taken from Boundary Conditions in chapter Boundary Conditions of Computational Fluid Dynamics
• The diffusive fluxes in the inlet boundary conditions _________(a) are specified(b) can be calculated(c) are not necessary(d) should be approximatedI have been asked this question in semester exam.This is a very interesting question from Boundary Conditions topic in section Boundary Conditions of Computational Fluid Dynamics
• The convective fluxes in the inlet boundary layer _________(a) are specified(b) can be calculated(c) should be approximated(d) are not necessaryThe question was asked in a job interview.The origin of the question is Boundary Conditions topic in division Boundary Conditions of Computational Fluid Dynamics
• Which of these represents the temperature of the fluid layer immediately near the wall at a condition analogous to no-slip? Note: Tw is the temperature at the wall.(a) T=-1(b) T=1(c) T=Tw(d) T=0The question was posed to me in quiz.Question is taken from Boundary Conditions in chapter Boundary Conditions of Computational Fluid Dynamics