Due on 2015-07-08, 05:15 IST

1) Stream lines can be visualized in an experiment where the flow is unsteady

Yes

No

Yes, provided there is a High-speed camera

Can be visualized with a Particle Image Velocimetry (PIV) set-up

1 point

2) If the flow is incompressible, ______________ of velocity is zero

Curl

Divergence

Gradient

1 point

Assignment 1Submitted assignment

Basic Fluid dynamics and types of PDEs

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Courses » Foundation of Computational Fluid Dynamics

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Week 2

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Week 4

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Week 6

Week 7

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Foundation of Computational Fluid Dynamics - - Assessment https://onlinecourses.nptel.ac.in/noc15_me06/assessment?name=23

1 of 4 15-Aug-15 9:59 PM

Pressure term

Both a and b

4) Major difficulty in solving the incompressible Navier-Stokes equation is due to the presence of _____________

Non-linearity

Absence of an explicit equation for Pressure

Equations are elliptic

All of the above

1 point

5) The Reynold’s transport theorem links ________________

System approach to CV approach

CV approach to system approach

Has nothing to do with any of the approaches

Both a and b

1 point

6) Timelines and Pathlines correspond to ______________ and ______________ formulations

Eulerian, Lagrangian

Lagrangian, Eulerian

Control volume, system

None of the above

1 point

7)

a – Dilatant, b – Newtonian, c – Bingham

a – Bingham , b – Pseudo-plastic, c – Newtonian

a – Bingham, b – Dilatant, c – Pseudo-plastic

None of the above

1 point

Foundation of Computational Fluid Dynamics - - Assessment https://onlinecourses.nptel.ac.in/noc15_me06/assessment?name=23

2 of 4 15-Aug-15 9:59 PM

8) If the flow is irrotational, then _______________

∇⋅V = 0

∇×V = 0

(V⋅∇)V = 0

(∇⋅∇)V = 0

1 point

9)

a – 1, b – 2, c – 3, d – 4

a – 2, b – 3, c – 4, d – 1

a – 3, b – 2, c -1, d – 4

a – 3, b – 4, c – 2, d – 1

1 point

10)

a – 1, b – 2, c – 3, d – 4

a – 2, b – 3, c – 4, d – 1

1 point

Foundation of Computational Fluid Dynamics - - Assessment https://onlinecourses.nptel.ac.in/noc15_me06/assessment?name=23

3 of 4 15-Aug-15 9:59 PM

a – 3, b – 4, c -1, d – 2

a – 3, b – 4, c – 2, d – 1

11)

Elliptic

Parabolic

Hyperbolic

Mixed

1 point

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Foundation of Computational Fluid Dynamics - - Assessment https://onlinecourses.nptel.ac.in/noc15_me06/assessment?name=23

4 of 4 15-Aug-15 9:59 PM