2.
(Elbow - 25 pts) Water is moving steadily through a double entrance, single exit elbow, as shown in the diagram below. Neglect the weight of the elbow. V1 z
pipe P1 D1
Elbow clamp
Parameters of the problem: Pipe diameters: D1 ,D2 ,D3 Pipe pressures: P1
FLUIDS MECHANICS (ENG 103)
Midterm Exam: Specific Learning Objectives
What is a fluid; Dimensions & Units
• Define what is a fluid
• Give practical examples of phenomena or technology where fluid mechanics is important
• State the three basic systems of d
FLUIDS MECHANICS (ENG 103)
Final Exam: Specific Learning Objectives
What is a fluid; Dimensions & Units
• Define what is a fluid
• Give practical examples of phenomena or technology where fluid mechanics is important
• State the three basic systems of dim
4.
(Siphon - 25 pts) A plastic tube of 50 mm diameter is used to siphon water from a large tank, as shown in the figure below. If the outside pressure of the tube is 25 kPa greater than the pressure within the tube, the tube will collapse and the siphon w
4. (Siphon - 25 pts) A plastic tube of d=50 mm diameter is used to siphon water from a large tank, as shown in the gure
below If the outside pressure of the tube is Ap=25 kPa greater than the pressure within the mbe, the tube will collapse and
the siphon
4.
(Hydrostatics - 25 pts) Consider the
rectangular gate AB immersed in the fluids
water and oil, as shown in the diagram below.
The specific weight of the water is γ w ; the
specific weight of oil is γ o . The temperature of
the system is T (abs). Let g
4. (Hydrostatics --- 25 1313) Consider the
rectangular gate AB immersed in the uids
water and oil, as shown in the diagram below.
The specic weight of the water is 9,, ; the
specic weight ofoi! is )0. The temperature of
the system is T(abe). Let gbe the a
3.
(Manometers - 25 pts) The tank shown right ( L = 1 m , R = 1 m ) contains water ( w = 9,800 N/m 3 ). The gage pressure reading is PA, g = 50 kPa . Assume that the density of the vapor between the free surface of the water and the hemispherical upper en
2.
(Streamlines 25 pts) Water flowing out of an oscillating sprinkler head produces the following twodimensional velocity field: & & * V = u 0 sin [ (t - y / v 0 )] i + v 0 j ,
where i and j are the unit vectors along the x -axis and y -axis respectively,
1.
(Viscous stress - 25 pts) A thin plate of large area is placed midway in a small gap of height, h, filled with oil
having a viscosity µ0. If the plate is pulled with a force, F, a constant velocity, V, results. Now a lighter oil of
viscosity µ1 is plac
4. Popcorn machine Consider the popcorn machine sketched right. The corn kernels placed on the support grid are heated by the hot air flow ( = 0.946 kg/m 3 and = 2.17 10 -5 N.s/m 2 ) provided by the fan below and, eventually, pop. The popcorn is then entr
1.
(Model/Prototype - 20 pts) An experiment is being designed to measure aerodynamic forces on a building. The model is a 1/60 scale replica of the prototype. The significant variables are found to be drag force FD, wind velocity V, density , viscosity ,
5.
(Coanda Effect - 20 pts) A circular cylinder
held tangent to a flowing rectangular stream
(width w into the paper and density ρ ) causes
it to deflect (see Figure). Assume that gravity
2
and friction effects are negligible. In order to
evaluate the ver
1.
(Viscous stress - 20 pts) The viscosity of liquids can be measured through
the use of a rotating viscometer of the type illustrated in the figure. In this
device the outer cylinder is fixed and the inner cylinder is rotated at a known
angular velocity,