Q.1
Usually, in the inlet boundary conditions ___________ are known.
  • a) gradients of flow properties
  • b) diffusive fluxes of properties
  • c) convective fluxes of properties
  • d) flow properties
Q.2
The convective fluxes in the inlet boundary layer _________
  • a) are specified
  • b) can be calculated
  • c) should be approximated
  • d) are not necessary
Q.3
The diffusive fluxes in the inlet boundary conditions _________
  • a) are specified
  • b) can be calculated
  • c) are not necessary
  • d) should be approximated
Q.4
An extra grid is used before the physical boundary. What is the use of this grid?
  • a) To store the inlet boundary values
  • b) To solve the discretized equation
  • c) To calculate the inlet boundary values
  • d) To solve the system analytically
Q.5
_________ is fixed at one inlet node and pressure correction is set to _________ in that node.
  • a) Gauge pressure, one
  • b) Absolute pressure, one
  • c) Gauge pressure, zero
  • d) Absolute pressure, zero
Q.6
If we are solving a k-ε model, the values of k and ε _________
  • a) are either specified or estimated at the inlet
  • b) are either specified or estimated at the outlet
  • c) need not be specified or estimated anywhere
  • d) are not estimated
Q.7
Which of these is the best practice regarding outlet boundaries?
  • a) Outlet boundaries should be at the exact outlet of the geometry
  • b) Outlet boundaries should be set as close as possible to the inlet boundaries
  • c) Outlet boundaries should be set as far as possible to the physical geometry
  • d) Outlet boundaries should be set as close as possible to the physical geometry
Q.8
Which of these statements is false regarding the pressure correction at boundaries?
  • a) Pressure reference is set at the inlet boundaries
  • b) Pressure reference is set at the outlet boundaries
  • c) The link to the inlet boundary side is suppressed
  • d) The link to the outlet boundary side is suppressed
Q.9
The mass flux out should be equal to the mass flux in. This is in accordance with _________
  • a) energy conservation
  • b) momentum conservation
  • c) continuity condition
  • d) flux conservation
0 h : 0 m : 1 s