MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 surface integral can be used to represent ____ and ____ terms of the transport equation. |
| A. | Rate of change and diffusion |
| B. | Rate of change and convection |
| C. | Source and diffusion |
| D. | Convection and diffusion |
| Answer» E. | |
| 2. |
To get the mass conservation equation from the general transport equation given below, Φ=?\(\frac{\partial(\rho\Phi)}{\partial t}+div(\rho\Phi\vec{u})\)=div(ΓgradΦ)+SΦ |
| A. | Mass of the fluid |
| B. | 1 |
| C. | 0 |
| D. | Density of the fluid |
| Answer» C. 0 | |
| 3. |
Which of these statements hold true? |
| A. | Diffusive flux is always positive |
| B. | Diffusive flux is positive in the direction of the positive gradient of fluid property |
| C. | Diffusive flux is positive in the direction of the negative gradient of fluid property |
| D. | Diffusive flux is always negative |
| Answer» D. Diffusive flux is always negative | |
| 4. |
When the general transport equation is written in the energy equation form, what does Γ become? |
| A. | k |
| B. | μ |
| C. | σ |
| D. | κ |
| Answer» B. μ | |
| 5. |
In terms of heat transfer, what does div(ΓgradΦ) mean? |
| A. | Heat radiation |
| B. | Heat convection |
| C. | Thermal flow |
| D. | Heat conduction |
| Answer» E. | |
| 6. |
What does this symbol Γ in the term div(ΓgradΦ) of the general transport equation mean? |
| A. | Diffusion flux |
| B. | Convection coefficient |
| C. | Diffusion coefficient |
| D. | Rate of diffusion |
| Answer» D. Rate of diffusion | |
| 7. |
Which term represents the diffusion of the property Φ? |
| A. | div(Φ) |
| B. | div(ΓgradΦ) |
| C. | curl(Φ) |
| D. | curl(ΓgradΦ) |
| Answer» C. curl(Φ) | |
| 8. |
Which of these terms represent the flow of fluid into and out of the observation model? |
| A. | \(\frac{\partial(\rho\Phi)}{\partial t}\) |
| B. | \(div(\rho\Phi\vec{u})\) |
| C. | div(ΓgradΦ) |
| D. | ΓgradΦ |
| Answer» C. div(ΓgradΦ) | |
| 9. |
What does the term \(\frac{\partial(\rho\Phi)}{\partial t}\) mean? |
| A. | Rate of change |
| B. | Convection |
| C. | Diffusion |
| D. | Source term |
| Answer» B. Convection | |
| 10. |
What are the terms included in the transport equation? |
| A. | Rate of change term, advective term, convective term, source term |
| B. | Advective term, diffusive term, convective term, source term |
| C. | Rate of change term, diffusive term, convective term, advective term |
| D. | Rate of change term, diffusive term, convective term, source term |
| Answer» E. | |
| 11. |
The general equation applicable to all the properties is called the general transport equation. What does this term ‘transport’ signify? |
| A. | The equation is applicable to all properties |
| B. | The equation can be transformed easily |
| C. | The equation includes various transport processes |
| D. | The equation is general |
| Answer» D. The equation is general | |