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 general form of the equation for the source term is[aC-FluxCC ] ΦC+∑F~NB(C)aF ΦF =FluxVC.When the variable Φ is positive-definite, the FluxVC should be ______________ |
| A. | FluxVC must be greater than one |
| B. | FluxVC must be less than one |
| C. | FluxVC must be less than zero |
| D. | FluxVC must be greater than zero |
| Answer» E. | |
| 2. |
The general form of the equation for the source term is[aC-FluxCC ] ΦC+∑F~NB(C)aF ΦF =FluxVC.The constraint on the term FluxCC is imposed by ______________ |
| A. | Scarborough criterion |
| B. | Richardson extrapolation |
| C. | Stability criterion |
| D. | Gauss-Siedel criterion |
| Answer» B. Richardson extrapolation | |
| 3. |
The general form of the equation for the source term is[aC-FluxCC ] ΦC+∑F~NB(C)aF ΦF =FluxVC.What constraint does the term FluxCC have? |
| A. | FluxCC must be greater than one |
| B. | FluxCC must be less than one |
| C. | FluxCC must be less than zero |
| D. | FluxCC must be greater than zero |
| Answer» D. FluxCC must be greater than zero | |
| 4. |
For linearizing the source term, which of these methods is used? |
| A. | Weighted average |
| B. | Series expansion |
| C. | Normalization |
| D. | Central differencing |
| Answer» C. Normalization | |
| 5. |
When the source term varies highly, which of these properties is affected? |
| A. | Consistency |
| B. | Boundedness |
| C. | Stability |
| D. | Rate of convergence |
| Answer» E. | |
| 6. |
When the source term does not vary much, the source term is ___________ |
| A. | implicitly calculated |
| B. | calculated from the previous iteration’s values |
| C. | solved simultaneously |
| D. | calculated form the current values |
| Answer» C. solved simultaneously | |
| 7. |
The source term is ____________ |
| A. | equal to the square of the source term |
| B. | equal to the source term |
| C. | a function of the flow variable |
| D. | a function of the product of flow variable and the sink term |
| Answer» D. a function of the product of flow variable and the sink term | |
| 8. |
Which of these methods is recommended for the source term treatment in general? |
| A. | Treat sinks explicitly and sources implicitly |
| B. | Treat sinks implicitly and sources explicitly |
| C. | Treat the source term explicitly |
| D. | Treat the source term implicitly |
| Answer» C. Treat the source term explicitly | |
| 9. |
Which of these physical properties of the flow problems is affected by the source term? |
| A. | Order of accuracy |
| B. | Reduction of error |
| C. | Stability |
| D. | Accuracy |
| Answer» D. Accuracy | |
| 10. |
Which of these transport phenomena do not involve any source term? |
| A. | Heat conduction |
| B. | Heat radiation |
| C. | Turbulence models |
| D. | Chemical reactions |
| Answer» B. Heat radiation | |