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. |
Consider two flow variables which can be decomposed as a=A+a’ and b=B+b’. What is ab? |
| A. | 0 |
| B. | 1 |
| C. | AB |
| D. | a’b’ |
| Answer» E. | |
| 2. |
Consider a vector flow variable which can be decomposed as \(\vec{a}=\vec{A}+\vec{a’}.\overline{div \,\vec{a}}\) will be equal to ____________ |
| A. | div \(\vec{A}\) |
| B. | \(\overline{div \vec{a’}}\) |
| C. | \(\overline{div \vec{a}}\) |
| D. | \(\overline{div \vec{A}}\) |
| Answer» B. \(\overline{div \vec{a’}}\) | |
| 3. |
The mean of the product of a flow variable and the mean component of another flow variable is ____________ |
| A. | the product of their mean components |
| B. | the product of their fluctuating components |
| C. | the mean of the product of their mean components |
| D. | the mean of the product of their fluctuating components |
| Answer» B. the product of their fluctuating components | |
| 4. |
The mean of the product of the mean component of one variable and the fluctuating component of another variable is ____________ |
| A. | 1 |
| B. | 0 |
| C. | the product of their mean components |
| D. | the product of their fluctuating components |
| Answer» C. the product of their mean components | |
| 5. |
The mean of the space-based integral of a flow variable is equal to ____________ |
| A. | the summation of its mean component |
| B. | the space-based integral of its fluctuating component |
| C. | the space-based integral of its mean component |
| D. | the summation of its fluctuating components |
| Answer» D. the summation of its fluctuating components | |
| 6. |
The mean of the summation of two flow variables will be equal to ____________ |
| A. | the summation of their mean components – the summation of the mean of their fluctuating components |
| B. | the summation of their mean components + the summation of the mean of their fluctuating components |
| C. | the summation of their fluctuating components |
| D. | the summation of their mean components |
| Answer» E. | |
| 7. |
The mean of the spatial partial derivative of a flow variable will be equal to ____________ |
| A. | 0 |
| B. | 1 |
| C. | the spatial partial derivative of the mean component |
| D. | the mean component |
| Answer» D. the mean component | |
| 8. |
The average of the mean component will be ____________ |
| A. | equal to zero |
| B. | equal to the mean component itself |
| C. | equal to 1 |
| D. | equal to the fluctuating component |
| Answer» C. equal to 1 | |
| 9. |
According to the rules for averaging, which of these will sum up to zero? |
| A. | The mean component of the flow variable |
| B. | The fluctuating component of the flow variable |
| C. | The flow variable |
| D. | Integration of the flow variable |
| Answer» B. The fluctuating component of the flow variable | |
| 10. |
These rules for averaging are used to average ___________ |
| A. | fluctuations in the turbulent flow |
| B. | variation in results of turbulent flow |
| C. | the coefficients in FVM |
| D. | the coefficients in FDM |
| Answer» B. variation in results of turbulent flow | |