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. |
Stress components cannot be expressed in terms of __________ |
| A. | Cartesian tensors |
| B. | Contra-variant tensors |
| C. | Covariant tensors |
| D. | Metric tensors |
| Answer» E. | |
| 2. |
Which of these flow properties does not suit covariant or contra-variant bases? |
| A. | Velocity |
| B. | Density |
| C. | Stress |
| D. | Viscous forces |
| Answer» C. Stress | |
| 3. |
Which of these arrangements of the velocity and pressure gradient components is suitable for non-orthogonal grids? |
| A. | Staggered arrangement with covariant base |
| B. | Collocated arrangement |
| C. | Staggered arrangement |
| D. | Covariant arrangement |
| Answer» C. Staggered arrangement | |
| 4. |
Staggered grid arrangements are used to establish strong coupling between ____________ and __________ |
| A. | velocities and momentum components |
| B. | velocities and pressure gradients |
| C. | velocities and viscosity terms |
| D. | viscosity and source terms |
| Answer» E. | |
| 5. |
While changing the coordinates from Cartesian to non-orthogonal in the Finite Difference Method, which of the following remains the same? |
| A. | all the terms in the equation |
| B. | conservation properties of the equation |
| C. | number of terms in the equation |
| D. | source terms of the equation |
| Answer» C. number of terms in the equation | |
| 6. |
Curvilinear coordinates do not suit __________ |
| A. | Unstructured grids |
| B. | Structured grids |
| C. | Orthogonal grids |
| D. | Non-orthogonal grids |
| Answer» B. Structured grids | |
| 7. |
Which of these terms in the momentum equation for component represents the Coriolis force? |
| A. | ( rho v_r frac{ v_ theta}{ partial r} ) |
| B. | ( frac{ rho v_ theta}{r} frac{ partial v_ theta}{ partial theta} ) |
| C. | ( frac{ rho v_r v_ theta}{r} ) |
| D. | ( frac{ partial v_ theta}{ partial r} ) |
| Answer» D. ( frac{ partial v_ theta}{ partial r} ) | |
| 8. |
In the polar-cylindrical momentum equation for the r-component, the term ( frac{ rho v theta^2}{r} ) represents ___________ |
| A. | Centrifugal force |
| B. | Centripetal force |
| C. | Tangential force |
| D. | Coriolis force |
| Answer» B. Centripetal force | |
| 9. |
While using grid oriented velocity components, conservation of which of these equations will be lost? |
| A. | Energy equation |
| B. | Euler equations |
| C. | Momentum equation |
| D. | Continuity equation |
| Answer» D. Continuity equation | |
| 10. |
Which of these coordinate systems will best suit to model the flow in a pipe with a swirl? |
| A. | Cylindrical coordinates |
| B. | Cartesian coordinates |
| C. | Spherical coordinates |
| D. | Polar coordinates |
| Answer» B. Cartesian coordinates | |