# PTU B.Tech Aero Engineering? 6th Semester May 2019 72454 COMPUTATIONAL FLUID DYNAMICS Question Papers

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

Roll No.
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

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

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