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.

Which of these apply to parabolic equations?

A. They have one real characteristic line
B. They have two real characteristic lines
C. They have two imaginary characteristic lines
D. They do not have characteristic lines
Answer» B. They have two real characteristic lines
Discussion
2.

Which of these assumptions are made for parabolizing Navier-Stokes equations?

A. Viscous terms are neglected
B. Viscous terms with derivatives in the stream-wise direction are neglected
C. Derivatives in the stream-wise direction are neglected
D. Viscous terms in the stream-wise direction are neglected
Answer» C. Derivatives in the stream-wise direction are neglected
Discussion
3.

Imagine a parabolic flow represented by this diagram. What does the line ‘ad’ represent?

A. Right characteristic line
B. Left characteristic line
C. Boundary condition
D. Initial condition
Answer» D. Initial condition
Discussion
4.

Which of these equations is not parabolic?

A. \(\rho\dot{q}\frac{\partial}{\partial x}(k\frac{\partial T}{\partial x})+\frac{\partial}{\partial y}(k\frac{\partial T}{\partial y})+\frac{\partial}{\partial z}(k\frac{\partial T}{\partial z})=\rho\frac{\partial e}{\partial t}\)
B. \(\rho\dot{q}+\frac{\partial}{\partial x}(k\frac{\partial T}{\partial x})=\rho\frac{\partial e}{\partial t}\)
C. \(\frac{1}{\rho C_v}[\frac{\partial}{\partial x}(k\frac{\partial T}{\partial x})+\frac{\partial}{\partial y}(k \frac{\partial T}{\partial y})+\frac{\partial}{\partial z}(k\frac{\partial T}{\partial z})]=\frac{\partial T}{\partial t} \)
D. \(\frac{\partial}{\partial x}(k\frac{\partial T}{\partial x})+\frac{\partial}{\partial y}(k \frac{\partial T}{\partial y})+\frac{\partial}{\partial z}(k\frac{\partial T}{\partial z})=0\)
Answer» E.
Discussion
5.

Supersonic viscous problems _________

A. are always circular
B. cannot be parabolic
C. are parabolic
D. can be parabolized
Answer» E.
Discussion
6.

Imagine a parabolic flow represented by this diagram. Which of these lines represent initial conditions?

A. ab
B. p
C. ab
D. ad
Answer» B. p
Discussion
7.

Imagine the point ‘p’ in the diagram is disturbed by some external conditions. Which of these regions will be affected by this disturbance?

A. Neither 1 nor 2
B. Both 1 and 2
C. 1 only
D. 2 only
Answer» E.
Discussion
8.

Which among these problems is parabolic?

A. Steady inviscid flow
B. Steady state heat conduction
C. Unsteady heat conduction
D. Unsteady inviscid flow
Answer» D. Unsteady inviscid flow
Discussion
9.

Consider the flowing diagram. Which of these flows can be represented by this diagram?

A. Steady viscous flow
B. Transient viscous flow
C. Transient inviscid flow
D. Steady inviscid flow
Answer» C. Transient inviscid flow
Discussion
10.

Which of these are associated with a parabolic equation?

A. Initial and boundary conditions
B. Initial conditions only
C. Boundary conditions only
D. Neither initial conditions nor boundary conditions
Answer» B. Initial conditions only
Discussion