MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
For incompressible flows with no body forces, the volume integral term is ____________ |
| A. | viscous terms |
| B. | pressure forces |
| C. | body forces |
| D. | flux terms |
| Answer» B. pressure forces | |
| 2. |
An equation for the conservation of kinetic energy can be obtained by ___________ |
| A. | the product of momentum equations and mass |
| B. | the product of momentum equations and velocities |
| C. | the product of continuity equations and velocities |
| D. | the product of continuity equations and mass |
| Answer» C. the product of continuity equations and velocities | |
| 3. |
In which of these flows is the kinetic energy important? |
| A. | Compressible flows |
| B. | Compressible isothermal flows |
| C. | Incompressible isothermal flows |
| D. | Incompressible flows |
| Answer» D. Incompressible flows | |
| 4. |
Which of these changes do not contribute to a change in momentum in the momentum equation? |
| A. | Surface fluxes |
| B. | Surface forces |
| C. | Body forces |
| D. | Rate of change term |
| Answer» E. | |
| 5. |
Which of these is correct for extra viscous terms in cylindrical coordinates? |
| A. | The implicit and explicit treatments do not depend on the sign of the coefficients |
| B. | It is treated implicitly when its contribution to the coefficient of the central node is negative |
| C. | It is treated implicitly when its contribution to the coefficient of the central node is positive |
| D. | It is treated explicitly when its contribution to the coefficient of the central node is positive |
| Answer» D. It is treated explicitly when its contribution to the coefficient of the central node is positive | |
| 6. |
The difference between the conservative and the non-conservative approaches occurs in the ___________ |
| A. | finite difference method |
| B. | finite volume method |
| C. | finite element method |
| D. | spectral element method |
| Answer» C. finite element method | |
| 7. |
If the pressure force is not treated as a surface force in the finite volume method, what will happen? |
| A. | Non-conservative error |
| B. | Stability issues |
| C. | Boundedness problems |
| D. | Convergence issues |
| Answer» B. Stability issues | |
| 8. |
In which of these approaches is the pressure force treated as a body force? |
| A. | Finite volume method – non-conservative approach |
| B. | Finite volume method – conservative approach |
| C. | Finite difference method – conservative approach |
| D. | Finite difference method – non-conservative approach |
| Answer» C. Finite difference method – conservative approach | |
| 9. |
For the incompressible flows, which of these terms will be zero? |
| A. | Pressure force |
| B. | Body force |
| C. | Bulk viscosity |
| D. | Shear force |
| Answer» D. Shear force | |