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. |
Along the downwind line of the NVD, the values of _____________ are changed to make the system stable. |
| A. | ac |
| B. | (l,k) |
| C. | Φc |
| D. | Φf |
| Answer» C. Φc | |
| 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 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)Φu |
| B. | (k)Φu |
| C. | (-l)Φu |
| D. | (l-k)Φu |
| Answer» B. (k)Φu | |
| 4. |
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. | |
| 5. |
For a scheme modelled using the DWF method, the diagonal coefficient becomes zero when ___________ |
| A. | DWFf > 0 |
| B. | DWFf > 1 |
| C. | DWFf > 0.5 |
| D. | DWFf > 2 |
| Answer» D. DWFf > 2 | |
| 6. |
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. \(\frac{1}{2}\) | |
| 7. |
The value of DWF for the downwind scheme is __________ |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 8. |
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 | |
| 9. |
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. \(\frac{\tilde{\phi_c}-\tilde{\phi_f}}{1-\tilde{\phi_c}}\) | |