MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
Which of these methods is used to treat the non-orthogonal diffusion term? |
| A. | Deferred correction |
| B. | Predictor corrector |
| C. | Green-gauss |
| D. | Trial and error method |
| Answer» B. Predictor corrector | |
| 2. |
What is the relationship between ( vec{E_f} ,and , vec{S_f} ) using the over-relaxed approach? |
| A. | ( vec{E_f}=( vec{S_f} ). vec{e} ) |
| B. | ( vec{E_f}=( frac{S_f}{cos u2061 theta}) vec{e} ) |
| C. | ( vec{E_f}=( vec{S_f}) vec{e} ) |
| D. | ( vec{E_f}=(( vec{S_f}). vec{e} ) vec{e} ) |
| Answer» C. ( vec{E_f}=( vec{S_f}) vec{e} ) | |
| 3. |
In the over-relaxed approach, the importance of the term involving F and C _________ as the non-orthogonality _________ |
| A. | decreases, increases |
| B. | remains the same, increases |
| C. | increases, remains the same |
| D. | increases, increases |
| Answer» E. | |
| 4. |
In the orthogonal correction approach, the relationship between ( vec{E_f} , and , vec{S_f} ) is ________ |
| A. | ( vec{E_f}= vec{S_f} vec{e} ) |
| B. | ( vec{E_f}=S_f cos u2061 theta vec{e} ) |
| C. | ( vec{E_f}=S_f vec{e} ) |
| D. | ( vec{E_f}= vec{S_f}. vec{e} ) |
| Answer» D. ( vec{E_f}= vec{S_f}. vec{e} ) | |
| 5. |
Which of these is correct regarding the minimum correction approach? |
| A. | The non-orthogonal correction is kept as small as possible |
| B. | The non-orthogonal correction is kept as large as possible |
| C. | The surface vector is kept as small as possible |
| D. | The surface vector is kept as large as possible |
| Answer» B. The non-orthogonal correction is kept as large as possible | |
| 6. |
In the minimum correction approach of decomposing the surface vector of a non-orthogonal grid, the relationship between the vector connecting the owner and the neighbour node (( vec{E_f}) ) and the surface vector (( vec{S_f}) ) is given as _________ |
| A. | ( vec{S_f} sin u2061 theta. vec{e} ) |
| B. | ( vec{S_f} cos u2061 theta. vec{e} ) |
| C. | ((S_f cos u2061 theta) vec{e} ) |
| D. | ((S_f sin theta) vec{e} ) |
| Answer» D. ((S_f sin theta) vec{e} ) | |
| 7. |
Non-orthogonality leads to ________ in diffusion problems. |
| A. | cubic-diffusion |
| B. | less-diffusion |
| C. | additional-diffusion |
| D. | cross-diffusion |
| Answer» E. | |
| 8. |
Non-orthogonality creates a problem in _________ of the steady-state diffusion equation. |
| A. | the neighbouring terms |
| B. | the source term |
| C. | the direction of the surface vector |
| D. | the magnitude of the surface vector |
| Answer» D. the magnitude of the surface vector | |