PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Aerospace Engineering?

Total No. of Pages : 02

Total No. of Questions : 09

B.Tech.(Aerospace Engg.) (2012 Batch) (Sem.?6)

COMPUTATIONAL FLUID DYNAMICS

Subject Code : ASPE-309

M.Code : 72454

Time : 3 Hrs. Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1.

SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks

each.

2.

SECTION-B contains FIVE questions carrying FIVE marks each and students

have to attempt any FOUR questions.

3.

SECTION-C contains T HREE questions carrying T EN marks each and students

have to attempt any T WO questions.

SECTION-A

Q1 Answer briefly :

a) Parallel Processors

b) Finite Difference

c) Time marching

d) Viscous flow

e) Flux variables

f) Time accurate solution

g) Stretched Grid

h) Boundary fitted Grid

i) Explicit solution

j) Contour plot

1 | M-72454

(S2)-107

SECTION-B

Q2. Explain various terms in the Navier-Stokes equation (Momentum Equation) given below:

( u

)

p

.

uV

f

xx

yx

zx

x

t

x

x

y

z

( v

)

p

.

vV

f

xy

yy

zy

y

t

y

x

y

z

( )

w

p

.

w

V

f

xz

yz

zz

z

t

z

x

y

z

Q3. Explain artificial viscosity.

Q4. Explain shock fitting and shock capturing methods

Q5. Explain ADI implicit solution technique.

Q6. Write the generic form of the governing equations and explain various terms involved.

SECTION-C

Q7. Explain the process to set up a numerical solution of an unsteady inviscid flow using

suitable time marching technique.

Q8. Explain general transformation of the Laplace equation from physical space to

computational space for generating a curvilinear grid.

Q9. Write short notes on the followings :

a) Classifications of governing partial differential equations

b) CFL criteria

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any

page of Answer Sheet will lead to UMC against the Student.

2 | M-72454

(S2)-107

This post was last modified on 04 November 2019