PTU Punjab Technical University B-Tech May 2019 Question Papers 3rd Semester AREO-Aerospace-Engineering
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 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
1.
Answer briefly :
(a) Pathline
(b) Potential flow
(c) Conservation equations
(d) Centre of pressure
(e) Aerodynamic force
(f) Lift coefficient
(g) Pressure coefficient
(h) Steady-incompressible flow
(i) Two dimensional flow separation
(j) Boundary Layer
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SECTION-B
2.
Define circulation, angular velocity, vorticity and time rate of strain of a fluid element in
three-dimensional space.
3.
Starting from the first principle. Derive Euler Equation of motion.
4.
Describe Doublet flow. Derive the velocity potential and stream function for it.
5.
Explain, why a laminar boundary layer separates more easily than a turbulent boundary
layer.
6.
Derive an expression for velocity potential and stream function for a vortex flow.
SECTION-C
7.
Show that the pressure coefficient around a circular cylinder placed in an ideal,
incompressible flow is given by : Cp = 1.?4 sin2 . Where `' is the angular coordinate on
the surface of the cylinder measured from the lagging stagnation point.
8.
Derive an expression for 2-D continuity equation applicable to compressible, viscous, non-
uniform and unsteady flows. What are the advantages of integral form of continuity
equation over the differential form?
9.
Write short notes on the followings :
(a) Kantian's Integral equation
(b) Blasius solution for a flat plate
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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This post was last modified on 04 November 2019