Explore topic-wise MCQs in Computational Fluid Dynamics.

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.

The pressure correction is an __________

A. explicit time-independent method
B. implicit time-independent method
C. implicit time-dependent method
D. explicit time-dependent method
Answer» D. explicit time-dependent method
Discussion
2.

The correction in the velocity field is used to _____________

A. to find the pressure field of the next time step
B. correct the pressure field
C. to get the velocity field of the next time step
D. to correct the velocity field in the previous iteration
Answer» C. to get the velocity field of the next time step
Discussion
3.

The pressure used to find the velocities from the momentum equations is of __________

A. the previous time step
B. the oldest value
C. the latest value
D. the current time step
Answer» B. the oldest value
Discussion
4.

In which of these terms of the momentum equation will the correction have no impact?

A. Diffusion terms
B. Source terms
C. Velocity terms
D. Surface flux terms
Answer» E.
Discussion
5.

The momentum equation drives the correction field of __________

A. density
B. temperature
C. pressure
D. energy
Answer» D. energy
Discussion
6.

The continuity equation drives the correction field of __________

A. density
B. velocity
C. pressure
D. energy
Answer» C. pressure
Discussion
7.

State the condition obtained by applying the correction to the continuity equation.

A. When the mass flow rate reaches an exact solution, the correction field becomes zero
B. When the velocity reaches an exact solution, the correction field becomes zero
C. When the mass flow rate reaches an exact solution, the correction field becomes infinity
D. When the velocity reaches an exact solution, the correction field becomes infinity
Answer» B. When the velocity reaches an exact solution, the correction field becomes zero
Discussion
8.

In the incompressible flows, the correction implies a correction in _________

A. momentum
B. velocity
C. mass
D. density
Answer» C. mass
Discussion
9.

Consider a one-dimensional flow with two bounding faces in the eastern (e) and the western sides (w). Applying pressure correction to the mass conservation equation, which of these equations will be obtained?(Note: \(\dot{m}\) represents the mass flow rate and the signs * and ‘ represent the initial guess and the correction terms respectively).

A. \(\dot{m}_{e}^{‘}+\dot{m}_{w}^{‘}=+\dot{m_e}*+\dot{m}_{w}^{*}\)
B. \(\dot{m}_{w}^{‘}=-\dot{m}_{e}^{*}\)
C. \(\dot{m}_{e}^{‘}+\dot{m}_{w}^{‘}=-\dot{m_e}*-\dot{m}_{w}^{*}\)
D. \(\dot{m}_{e}^{‘}=-\dot{m}_{e}^{*}\)
E. and the western sides (w). Applying pressure correction to the mass conservation equation, which of these equations will be obtained?(Note: \(\dot{m}\) represents the mass flow rate and the signs * and ‘ represent the initial guess and the correction terms respectively).a) \(\dot{m}_{e}^{‘}+\dot{m}_{w}^{‘}=+\dot{m_e}*+\dot{m}_{w}^{*}\) b) \(\dot{m}_{w}^{‘}=-\dot{m}_{e}^{*}\) c) \(\dot{m}_{e}^{‘}+\dot{m}_{w}^{‘}=-\dot{m_e}*-\dot{m}_{w}^{*}\) d) \(\dot{m}_{e}^{‘}=-\dot{m}_{e}^{*}\)
Answer» D. \(\dot{m}_{e}^{‘}=-\dot{m}_{e}^{*}\)
Discussion
10.

The pressure correction equation is used to ensure _________

A. energy conservation
B. velocity conservation
C. momentum conservation
D. mass conservation
Answer» E.
Discussion