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. |
Along the downwind line of the NVD, the values of _____________ are changed to make the system stable. |
| A. | a<sub>c</sub> |
| B. | (l,k) |
| C. | <sub>c</sub> |
| D. | <sub>f</sub> |
| Answer» C. <sub>c</sub> | |
| 2. |
What is DWFf for the second-order upwind scheme? |
| A. | ( frac{ tilde{ phi_c}}{2(1- tilde{ phi_c})} ) |
| B. | ( frac{1}{2(1- tilde{ phi_c})} ) |
| C. | ( frac{ tilde{ phi_c}}{4(1- tilde{ phi_c})} ) |
| D. | ( frac{1}{4(1- tilde{ phi_c})} ) |
| Answer» B. ( frac{1}{2(1- tilde{ phi_c})} ) | |
| 3. |
The high-resolution schemes formulated using the NWF method with the equation ( tilde{ phi_f} = l tilde{ phi_c}+k ) are stable without any alteration when __________ |
| A. | k>2 |
| B. | l>2 |
| C. | k>l |
| D. | l>k |
| Answer» E. | |
| 4. |
The deferred correction source term of the NWF method using he normalized interpolation profile ( tilde{ phi_f}=l tilde{ phi_c}+k ) is _________ |
| A. | (1-l-k) <sub>u</sub> |
| B. | (k) <sub>u</sub> |
| C. | (-l) <sub>u</sub> |
| D. | (l-k) <sub>u</sub> |
| Answer» B. (k) <sub>u</sub> | |
| 5. |
The value of DWFf for the central difference scheme is __________ |
| A. | 1 |
| B. | ( frac{1}{3} ) |
| C. | ( frac{1}{4} ) |
| D. | ( frac{1}{2} ) |
| Answer» E. | |
| 6. |
For a scheme modelled using the DWF method, the diagonal coefficient becomes zero when ___________ |
| A. | DWF<sub>f</sub> > 0 |
| B. | DWF<sub>f</sub> > 1 |
| C. | DWF<sub>f</sub> > 0.5 |
| D. | DWF<sub>f</sub> > 2 |
| Answer» D. DWF<sub>f</sub> > 2 | |
| 7. |
DWFf for the FROMM scheme is ___________ |
| A. | ( frac{1}{2(1- tilde{ phi_c})} ) |
| B. | ( frac{1}{4(1- tilde{ phi_c})} ) |
| C. | ( frac{1}{2} ) |
| D. | ( frac{1}{4} ) |
| Answer» C. ( frac{1}{2} ) | |
| 8. |
The value of DWF for the downwind scheme is __________ |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 9. |
The value of the Downwind Weighing Factor (DWF) lies between ___________ |
| A. | 0 DWF |
| B. | DWF 0 |
| C. | 0 DWF 1 |
| D. | DWF 1 |
| Answer» D. DWF 1 | |
| 10. |
The Downwind Weighing Factor in the normalized form is given by __________ |
| A. | ( frac{ tilde{ phi_f}- tilde{ phi_c}}{1- tilde{ phi_c}} ) |
| B. | ( frac{ tilde{ phi_c}- tilde{ phi_f}}{1- tilde{ phi_c}} ) |
| C. | ( frac{ tilde{ phi_f}- tilde{ phi_c}}{1- tilde{ phi_f}} ) |
| D. | ( frac{ tilde{ phi_c}- tilde{ phi_f}}{1- tilde{ phi_f}} ) |
| Answer» B. ( frac{ tilde{ phi_c}- tilde{ phi_f}}{1- tilde{ phi_c}} ) | |