Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3130502 Fluid Flow Operations Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3130502 Date: 26/11/2019
Subject Name: Fluid Flow Operations
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1 (a) Define:
(i) Potential flow (ii) Streamline flow (iii) Fully
developed flow
03
(b) State and discuss Newton?s law of viscosity and concept
of viscosity.
04
(c) Show that average velocity is one ? half of the
maximum velocity for laminar flow of incompressible
Newtonian fluid through a circular pipe
07
Q.2 (a) Define hydraulic radius and write down the formula for
the equivalent diameter.
03
(b) Discuss velocity Distribution for laminar flow of
Newtonian fluids in a circular channel
04
(c) Discuss the concept of hydrostatic equilibrium and
derive mathematical condition of hydrostatic
equilibrium.
07
OR
(c) Derive equation for Gravity Decanter relating Total
depth, depth of each fluid and densities of fluid and time
required for the separation
07
Q.3 (a) Define: Mass velocity, average velocity, stream lines
and stream tubes.
03
(b) Explain concept of kinematic viscosity along with its
significance.
04
(c) The liquid of a density 865 kg/m
3
and vapor pressure
26.66 kN/m
2
is pumped. The distance between the level
of liquid in the reservoir and suction line is 1.2 meter.
Loss due to friction in suction line is 3.5 J/kg and
reservoir is open to atmosphere. Calculate the net
positive suction head of the pump.
07
OR
Q.3 (a) What is Schedule number, why is it used? 03
(b) Explain cavitation and priming with suitable example 04
(c) Derive the Bernoulli?s equation. Explain the corrections
applied and significance of the terms involved in it.
07
Q.4 (a) Write significance of Mach number and acoustic
velocity.
03
(b) Discuss flow of compressible fluid through convergent-
divergent nozzles.
04
(c) Develop the flow equation for any one variable head
meter; also discuss its applications and limitations.
07
FirstRanker.com - FirstRanker's Choice
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3130502 Date: 26/11/2019
Subject Name: Fluid Flow Operations
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1 (a) Define:
(i) Potential flow (ii) Streamline flow (iii) Fully
developed flow
03
(b) State and discuss Newton?s law of viscosity and concept
of viscosity.
04
(c) Show that average velocity is one ? half of the
maximum velocity for laminar flow of incompressible
Newtonian fluid through a circular pipe
07
Q.2 (a) Define hydraulic radius and write down the formula for
the equivalent diameter.
03
(b) Discuss velocity Distribution for laminar flow of
Newtonian fluids in a circular channel
04
(c) Discuss the concept of hydrostatic equilibrium and
derive mathematical condition of hydrostatic
equilibrium.
07
OR
(c) Derive equation for Gravity Decanter relating Total
depth, depth of each fluid and densities of fluid and time
required for the separation
07
Q.3 (a) Define: Mass velocity, average velocity, stream lines
and stream tubes.
03
(b) Explain concept of kinematic viscosity along with its
significance.
04
(c) The liquid of a density 865 kg/m
3
and vapor pressure
26.66 kN/m
2
is pumped. The distance between the level
of liquid in the reservoir and suction line is 1.2 meter.
Loss due to friction in suction line is 3.5 J/kg and
reservoir is open to atmosphere. Calculate the net
positive suction head of the pump.
07
OR
Q.3 (a) What is Schedule number, why is it used? 03
(b) Explain cavitation and priming with suitable example 04
(c) Derive the Bernoulli?s equation. Explain the corrections
applied and significance of the terms involved in it.
07
Q.4 (a) Write significance of Mach number and acoustic
velocity.
03
(b) Discuss flow of compressible fluid through convergent-
divergent nozzles.
04
(c) Develop the flow equation for any one variable head
meter; also discuss its applications and limitations.
07
2
OR
Q.4 (a) Enlist different types of valves used in pipe fittings. 03
(b) A pitot tube is used to measure velocity of water at the
center of a pipe, the stagnation pressure head is 6 m and
static pressure head is 5 m of water. Determine the flow
velocity assume Cd= 0.98
04
(c) The pressure drop for the flow of fluid through long,
straight and circular pipe depends upon the length and
diameter of pipe as well as velocity, density and
viscosity of a fluid. Develop an expression for the
pressure drop as a function of dimensionless groups by
using Buckingham?s ? theorem for dimensional
analysis.
07
Q.5 (a) Discus in brief Drag force and Drag coefficient. 03
(b) Give two applications in chemical industries where
centrifugal pump cannot be used.
04
(c) Water is to be pumped from ground level tank, which is
open to atmosphere to a cooling tower. The difference
between the level of water in the tank and discharge
point is 15 m. The velocity of water through 40 mm
internal diameter discharge pipe is 3 m/s. In the pipe
line there is a valve which is equivalent to 200 pipe
diameters and fitting equivalent to 150 pipe diameters.
The length of the entire is 30 meters. Calculate the
power requirement of the pump if efficiency of pump is
60%.
Data : density of water = 1000 kg/m
3
Viscosity of water
= 0.0008 PaS. Friction factor ?f? = 0.004.
07
OR
Q.5 (a) What is boundary layer separation and wake formation? 03
(b) Differentiate between pipes and tubes. 04
(c) Derive equation of continuity considering velocity in
three dimensions.
07
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020