Computational Fluid Dynamics Mock Test 9

10%

Question 1 of 10

1. Which of these changes do not contribute to a change in momentum in the momentum equation?

Body forces

Surface forces

Rate of change term

Surface fluxes

Question 1 of 10

Question 2 of 10

2. Which of these statements is true for an incompressible flow?

Absolute pressure is not important

Absolute density is not important

Absolute mass flux is not important

Absolute temperature is not important

Question 2 of 10

Question 3 of 10

3. What does the R in the SIMPLER algorithm stand for?

Refresh

Rewritten

Revised

Republished

Question 3 of 10

Question 4 of 10

4. The coefficients of the equation formed in the Rhie-Chow interpolation is obtained using ___________

Linear interpolation

Quadratic interpolation

Weighted average

Rhie-Chow interpolation

Question 4 of 10

Question 5 of 10

5. Which is correct regarding the upwind scheme?

Only numerical dispersion error arises

Both numerical dispersion and numerical diffusion errors arise

Only numerical diffusion error arises

Neither numerical dispersion nor numerical diffusion error arises

Question 5 of 10

Question 6 of 10

6. What is the order of accuracy of the QUICK scheme?

fourth-order

first-order

third-order

second-order

Question 6 of 10

Question 7 of 10

7. A large relaxation factor will lead to ____________

small and stable iteration steps

small and oscillatory iteration steps

large and stable iteration steps

large and oscillatory iteration steps

Question 7 of 10

Question 8 of 10

8. The Arbitrary Lagrangian-Eulerian method is advantageous for ___________

Non-orthogonal grids

Cartesian grids

Orthogonal grids

Curvilinear grids

Question 8 of 10

Question 9 of 10

9. State the condition obtained by applying the correction to the continuity equation.

When the mass flow rate reaches an exact solution, the correction field becomes zero

When the velocity reaches an exact solution, the correction field becomes zero

When the mass flow rate reaches an exact solution, the correction field becomes infinity

When the velocity reaches an exact solution, the correction field becomes infinity

Question 9 of 10

Question 10 of 10

10. The hybrid differencing scheme is a combination of ____________ and ___________

two types of central difference schemes

downwind and central difference schemes

upwind and downwind schemes

central difference and upwind schemes

Question 10 of 10