Q.1
To get the gradient of the flow variable using the Green-Gauss Theorem, which of these theorems is used?
  • a) Mean value theorem
  • b) Stolarsky mean
  • c) Racetrack principle
  • d) Newmark-beta method
Q.2
The gradient at the face of an element is obtained using ________
  • a) Linear interpolation
  • b) Geometric values
  • c) Green-Gauss theorem
  • d) Weighted average
Q.3
The face-based stencil used for computing Φf in the Green-Gauss Gradient formula is ________
  • a) more accurate and needs a large stencil
  • b) less accurate and needs a large stencil
  • c) more accurate and needs a compact stencil
  • d) less accurate and needs a compact stencil
Q.4
It is easy to construct _________ in the face-based computation.
  • a) Grids
  • b) Stencil
  • c) Global matrix
  • d) Jacobian matrices
Q.5
The value of the flow variable at face centre (Φf) in terms of the flow variable at the owner cell’s centre (ΦC) and the neighbouring cell’s centre (Φf) as given by the face-based stencil is ________
  • a) Φf=gC ΦC+gC Φf
  • b) Φf=gC ΦC+gf Φf
  • c) Φf=gC ΦC+(1-gC)Φf
  • d) Φf=gC ΦC+(1+gC)Φf
Q.6
The face-centred stencil is second-order _________
  • a) always
  • b) only when the centroid of the face and the line connecting the two cells meet
  • c) only when the centroid of the face and the line connecting the two cells do not meet
  • d) never
Q.7
In the vertex-based stencil, the flow variable at the face centroid is computed as ___________
  • a) the mean of the values at the vertices defining the surface
  • b) the mean of the values at the cell centres
  • c) the mean of the values at the vertices of the cells
  • d) the mean of the values at the centroids of the neighbouring faces
Q.8
The flow variable at the vertex node is calculated using the weighted average of the values at the cells sharing it. What is the weight used here?
  • a) Inverse of the distance of the vertex from the cell centroid
  • b) Distance of the vertex from the cell
  • c) Centroids of the cells
  • d) Mass of the cells
Q.9
To overcome the disadvantage caused by the information from the wrong side of cells ____________ is used in the vertex-based method.
  • a) upwind biased scheme
  • b) weighted average
  • c) downwind biased scheme
  • d) central scheme
0 h : 0 m : 1 s