MET212-Assinment 1
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This document contains an assignment for a fluid mechanics course. It includes 7 questions asking students to calculate fluid properties like density, specific weight, and specific gravity for various fluids including oil, water in a graduated cylinder, and air in rooms. Students are asked to tabulate common fluid properties, calculate properties for given volumes and masses of fluids, determine Reynolds number for flow in a pipe, and use the ideal gas law to find air properties based on pressure, temperature and room dimensions.
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Part II
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Pressure (kPa)
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Pressure (kPa)
103.0
60
70.8
113.5
88.0
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112.6
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111.5
62.0
100
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110.4
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109.0
34.0
180
39.9
105.5
31.0
200
26.4
101.8
10.5
96.7
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630
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109.6
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108.4
27.8
726
48.5
107.4
25.6
790
43.6
106.3
24.2
843
38.1
104.8
22.2
914
33.1
103.5
29.3
102.2
25.4
101.1
22.5
100.1
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99.4
17.4
98.6
12.8
97.2
9.4
96.7
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started first.
EXPERIMENTAL PROCEDURE (WORK IN PAIRS)
1. Put on goggles. Keep them on during the entire experiment.
2. Obtain a piece of magnesium ribbon that weighs no more than 0.08 grams. Record the mass
obtained (use significant figures!). Record this value in your data table (see report sheets).
Loosely roll it into a ball or coil it.
Encase the magnesium in a piece of copper mesh. Why do you think this might be helpful?
3. Fill the 800-mL beaker with approximately 200-mL of tap water.
4. Fill the 100-mL graduated cylinder with tap water. Using parafilm, a one-
hole stopper, or the palm of your hand, cover the top and invert the cylinder
into the beaker of water. You will end up with an inverted cylinder full of
water. Remove the parafilm or stopper if you used one. Rest the cylinder
on the bottom of the beaker. Try not to introduce any air bubbles in your
inverted cylinder (see Figure 1).
5. Place the magnesium (in its copper cage) into the graduated cylinder. Make
sure the magnesium is captured in the cylinder.
Figure 1: Gas collection in an
inverted cylinder full of water.
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MET212-Assinment 1
- 1. MET212- Fluid Mechanics & Machines 1 ST Semester, September 2011 Assignment # 1 Name…… ……… ……… …… ………… I.D No.…….… ……… Due date … … … Submit this assignment in a separate paper as an individual work. If required take the standard values for any parameters during your calculation. Q.1: Tabulate any five common properties of fluid with their symbles generally used in fluid mechanics, definition, measuring units in both SI and BG systems , dimension and formulas for calculation. Q.2: Calculate the a) Specific weight, b) Specific gravity and c) Density of 200 ft 3 of oil weighs 10520 lb. Q.3: A liquid poured into a graduated cylinder is found to weight 8 N when occupying a volume of 500 ml. Calculate its Densiity, specific weight and specific gravity. Q.4: A fluid (water) having a dynamic viscosity of 0.38 N.s/m 2 and SG 0.91 flows through a 25mm diameter pipe with a velocity of 2.6m/s. Determine the Reynolds number (Re) using SI units and indictae what type of flow is this one. Q.5: A fluid can indicate that it contains 350 cm3 fluids. The mass of full can of fluid is 0.369 Kg, while an empty can weighs 0.153 N. Determine the specific weight, density and specific gravity of the fluid in the can. Express your results in SI units. MET212-HW1 Dr. Adel Afify September, 2011 10
- 2. Q.6: Determine the density, specific gravity, and mass of the air in a room whose dimensions are shown in Figure below at 100 kN/m2 and 25º C. Consider air as an ideal gas and the gas constant of air is R= 0.287 kPa. m3 / kg K. Q.7: Determine the density, specific gravity, and mass of the air in a room whose dimensions are shown in Figure below at 8 bar and 26º C. Consider air as an ideal gas and the gas constant of air is R= 0.287 kPa. m3 / kg K MET212-HW1 Dr. Adel Afify September, 2011