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 pressure correction is an __________ |
| A. | explicit time-independent method |
| B. | implicit time-independent method |
| C. | implicit time-dependent method |
| D. | explicit time-dependent method |
| Answer» D. explicit time-dependent method | |
| 2. |
The correction in the velocity field is used to _____________ |
| A. | to find the pressure field of the next time step |
| B. | correct the pressure field |
| C. | to get the velocity field of the next time step |
| D. | to correct the velocity field in the previous iteration |
| Answer» C. to get the velocity field of the next time step | |
| 3. |
The pressure used to find the velocities from the momentum equations is of __________ |
| A. | the previous time step |
| B. | the oldest value |
| C. | the latest value |
| D. | the current time step |
| Answer» B. the oldest value | |
| 4. |
In which of these terms of the momentum equation will the correction have no impact? |
| A. | Diffusion terms |
| B. | Source terms |
| C. | Velocity terms |
| D. | Surface flux terms |
| Answer» E. | |
| 5. |
The momentum equation drives the correction field of __________ |
| A. | density |
| B. | temperature |
| C. | pressure |
| D. | energy |
| Answer» D. energy | |
| 6. |
The continuity equation drives the correction field of __________ |
| A. | density |
| B. | velocity |
| C. | pressure |
| D. | energy |
| Answer» C. pressure | |
| 7. |
State the condition obtained by applying the correction to the continuity equation. |
| A. | When the mass flow rate reaches an exact solution, the correction field becomes zero |
| B. | When the velocity reaches an exact solution, the correction field becomes zero |
| C. | When the mass flow rate reaches an exact solution, the correction field becomes infinity |
| D. | When the velocity reaches an exact solution, the correction field becomes infinity |
| Answer» B. When the velocity reaches an exact solution, the correction field becomes zero | |
| 8. |
In the incompressible flows, the correction implies a correction in _________ |
| A. | momentum |
| B. | velocity |
| C. | mass |
| D. | density |
| Answer» C. mass | |
| 9. |
Consider a one-dimensional flow with two bounding faces in the eastern (e) and the western sides (w). Applying pressure correction to the mass conservation equation, which of these equations will be obtained?(Note: ( dot{m} ) represents the mass flow rate and the signs * and represent the initial guess and the correction terms respectively). |
| A. | ( dot{m}_{e}^{ }+ dot{m}_{w}^{ }=+ dot{m_e}*+ dot{m}_{w}^{*} ) |
| B. | ( dot{m}_{w}^{ }=- dot{m}_{e}^{*} ) |
| C. | ( dot{m}_{e}^{ }+ dot{m}_{w}^{ }=- dot{m_e}*- dot{m}_{w}^{*} ) |
| D. | ( dot{m}_{e}^{ }=- dot{m}_{e}^{*} ) |
| Answer» D. ( dot{m}_{e}^{ }=- dot{m}_{e}^{*} ) | |
| 10. |
The pressure correction equation is used to ensure _________ |
| A. | energy conservation |
| B. | velocity conservation |
| C. | momentum conservation |
| D. | mass conservation |
| Answer» E. | |