MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Computational Fluid Dynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The weight used to average time in FANS method is _________ |
| A. | volume |
| B. | mass |
| C. | area |
| D. | density |
| Answer» C. area | |
| 2. |
What is the expansion of FANS method? |
| A. | Favre Averaged Navier-Stokes equations |
| B. | Fully Averaged Navier-Stokes equations |
| C. | Favre Averaged Numerical Simulation |
| D. | Fully Averaged Numerical Simulation |
| Answer» B. Fully Averaged Navier-Stokes equations | |
| 3. |
Which of these methods use time-based averaging? |
| A. | Statistical averaging with DNS |
| B. | DNS |
| C. | LES |
| D. | RANS |
| Answer» E. | |
| 4. |
Which of these correct about the LES method? |
| A. | Navier-Stokes equation is not needed |
| B. | Small turbulent models are directly simulated |
| C. | Sub-grid scale models are used for small turbulent scales |
| D. | Sub-grid scale models are used for large turbulent scales |
| Answer» D. Sub-grid scale models are used for large turbulent scales | |
| 5. |
Which of these methods is used to overcome the high resolution of turbulent flows? |
| A. | Weighted average |
| B. | Statistical analyses |
| C. | Data analysis |
| D. | Analytical method |
| Answer» C. Data analysis | |
| 6. |
What is the disadvantage of the DNS technique? |
| A. | Time averaging |
| B. | Spatial averaging |
| C. | Computationally demanding |
| D. | Large time-steps |
| Answer» D. Large time-steps | |
| 7. |
Which of these methods is invented to overcome the disadvantage of DNS technique? |
| A. | Temporal discretization |
| B. | FANS |
| C. | RANS |
| D. | LES |
| Answer» E. | |
| 8. |
Which among these techniques is the first one invented for solving turbulent flows? |
| A. | DNS |
| B. | LES |
| C. | RANS |
| D. | FANS |
| Answer» B. LES | |
| 9. |
Which of these methods is not used for turbulence modelling? |
| A. | RANS |
| B. | SIMPLE |
| C. | DNS |
| D. | LES |
| Answer» C. DNS | |
| 10. |
Which of these does not characterize a turbulent flow? |
| A. | Time-independent |
| B. | Rapid mixing |
| C. | Three-dimensional fluctuation |
| D. | Unstable |
| Answer» B. Rapid mixing | |