Download PTU B.Tech 2020 March Aero 3rd Sem ANE 203 Aerodynamics I Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Aero (Aerospace-Engg) 2020 March 3rd Sem ANE 203 Aerodynamics I Previous Question Paper

1 | M -60502 (S2)-838
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ANE)/(Aerospace Engg.) (2012 Onwards) (Sem.?3)
AERODYNAMICS-I
Subject Code : ANE-203
M.Code : 60502
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. a) Differentiate between compressible and incompressible flows.
b) What instrument is used to measure air speed over an airfoil?
c) Define mach number and Reynolds number.
d) What is Reynolds Transport theorem?
e) Define Helmholtz laws of vortex motion.
f) For what type of flow, Euler?s equation is valid?
g) For what type of flow, Navier-Stoke equation is used?
h) What is condition on Velocity for incompressible flow?
i) Differentiate between laminar and turbulent boundary layer.
j) Draw velocity profile of laminar and turbulent boundary layer.
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1 | M -60502 (S2)-838
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ANE)/(Aerospace Engg.) (2012 Onwards) (Sem.?3)
AERODYNAMICS-I
Subject Code : ANE-203
M.Code : 60502
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. a) Differentiate between compressible and incompressible flows.
b) What instrument is used to measure air speed over an airfoil?
c) Define mach number and Reynolds number.
d) What is Reynolds Transport theorem?
e) Define Helmholtz laws of vortex motion.
f) For what type of flow, Euler?s equation is valid?
g) For what type of flow, Navier-Stoke equation is used?
h) What is condition on Velocity for incompressible flow?
i) Differentiate between laminar and turbulent boundary layer.
j) Draw velocity profile of laminar and turbulent boundary layer.
2 | M -60502 (S2)-838
SECTION-B
2. A 2-D body is placed in a 2-D steady flow with free stream velocity of V
?
and angle of
attack ?. Derive the expression for normal and axial force per unit span.
3. Consider the velocity field given by u = y/(x
2
+ y
2
) and ? = ? x/(x
2
+ y
2
). Calculate the
equation of streamline passing through point (0, 5).
4. A uniform flow with free stream velocity v
?
is superimposed on a source of strength k
located at the origin. The uniform flow is moving from left to right. Draw the resultant
flow pattern over the semi-infinite body and obtain the expressions for velocity
components v
r
and v
?
.
5. Explain the poiseuille flow. Obtain the expression for velocity variation across the flow,
maximum velocity and shear stress at the walls.
6. Explain boundary layer formation over a flat plate and derive the expressions for
displacement thickness and momentum thickness.

SECTION-C
7. The velocity field over a wavy wall is given as
U =
2 /
2 2
1 cos
y l
h x
V e
l l
? ?
? ?
?
?
?
? ?
? ?
?
? ? ? ?
? ?
? ?

? =
2 /
2 2
sin
y l
x
V h e
l l
??
? ?
?
?
? ?
?
? ?
? ?

Prove that the flow is irrotational.
8. A uniform flow with free stream velocity V
?
and a doublet of strength k are
superimposed on a vortex of strength ?. Determine the stream function, velocity
components V
r
, V
?
and expression for lift per unit span over the resulting cylinder.
9. Consider the incompressible, 2-D flow over a flat plate at zero angle of attack. Obtain
Blasius solution of boundary layer equations and discuss the solution.

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.
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