Computational Fluid Dynamics Unstructured Grids Fvm Online Exam Quiz
Computational Fluid Dynamics Unstructured Grids Fvm GK Quiz. Question and Answers related to Computational Fluid Dynamics Unstructured Grids Fvm. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Unstructured Grids Fvm
Which of these formulae is correct to find the gradient of the element ‘k’?
Options
A : ??k = frac{1}{V_k}(Sigma_{nleftarrow f<k}Phi_nvec{S_n}-Sigma_{nleftarrow f>k} Phi_nvec{S_n})
B : ??k = frac{1}{V_k}(-Sigma_{nleftarrow f}Phi_n vec{S_n})
C : ??k = frac{1}{V_k}(Sigma_{nleftarrow f}Phi_n vec{S_n})
D : ??k = frac{1}{V_k}(- Sigma_{nleftarrow f<k}Phi_nvec{S_n}+Sigma_{nleftarrow f>k} Phi_nvec{S_n})
What is the cost of flexibility in unstructured grids?
Options
A : Consistency
B : Stability
C : Accuracy
D : Complexity
Which of these entities need the information to be explicitly stored?
Options
A : Elements, faces, nodes and neighbours
B : Elements, faces and nodes
C : Elements, faces and neighbours
D : Elements, nodes and neighbours
Which of these statements is true for unstructured grids?
Options
A : It is simple to model and use
B : Element connectivity is implicitly defined
C : Element connectivity does not depend upon indices
D : Bounding faces can be easily found
The direction of the normal to a face in an unstructured mesh depends upon __________
Options
A : Local indices
B : Global indices
C : Direction of flow
D : Direction of increasing indices
Gradient for an unstructured grid is calculated by ___________
Options
A : looping over the nodes in the computational domain
B : looping over the elements in the computational domain
C : looping over the faces in the computational domain
D : looping over the gradients in the computational domain
When compared to the algorithm to calculate the gradient of a structured grid, the algorithm for unstructured grids ___________
Options
A : need more computational cost
B : need less computational cost
C : is more accurate
D : is less accurate
The topology of the faces in an unstructured grid depends upon ___________
Options
A : Straddling elements
B : Boundary elements
C : Interior elements
D : Neighbouring elements
The advantage of using unstructured grids is ___________
Options
A : vectorization
B : flexibility
C : simple arrangement
D : less memory requirement
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