Question
In: Mechanical Engineering
Drag measurements were taken for a 5 cm diameter sphere in water at 20 °C to...
Drag measurements were taken for a 5 cm diameter sphere in water at 20 °C to predict the drag force of a 1 m diameter balloon rising in air with standard temperature and pressure. Given kinematic viscosity of water (v) = 1.0 X 10-6 m2/s and kinematic viscosity of air (v) = 1.46 X 10-5 m2/s.
- Perform the Buckingham Pi theorem to generate a relationship for FD as a function of the independent variables. Assume the drag FD is a function of diameter (d), velocity (V), fluid density (ρ) and kinematic viscosity (v)
2.Determine the sphere velocity if the balloon was rising at 3 m/s
Solutions
Expert Solution
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samet mamat answered 3 months agoRelated Solutions
Drag measurements were taken for a 5 cm diameter sphere in water at 20 °C to...
Drag measurements were taken for a 5 cm diameter sphere in water
at 20 °C to predict the drag force of a 1 m diameter balloon rising
in air with standard temperature and pressure. Given kinematic
viscosity of water (v) = 1.0 X 10-6
m2/s and kinematic viscosity of air (v) = 1.46
X 10-5 m2/s.
Perform the Buckingham Pi theorem to generate a relationship
for FD as a function of the independent variables.
Assume the drag FD is a...
4- If the drag force on a smooth sphere depends on the velocity (V), sphere diameter...
4- If the drag force on a smooth sphere depends on the velocity
(V), sphere diameter (D), viscosity (?), and density (?), use
dimensional analysis to show the drag coefficient on the sphere is
a function of the Reynolds number only. (15%) ?
2. Initially, the steel sphere with a diameter of 15 cm with a temperature of 200°C...
2. Initially, the steel sphere with a diameter of 15 cm with a
temperature of 200°C was left to cool in the airflow at a
temperature of 6 m/s. By making the necessary acceptances,
calculate the amount of time the aluminum sphere will fall to a
temperature of 50°C.
The relevant correlation for forced transport on the sphere;
NuD = 2 + (0.4 ReD 0.5+ 0.06 ReD 2/3) Pr 0.6 (μo/μy)1/4
Measurements of length (cm) were taken for a sample of fish. The gender (male or female)...
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The most appropriate technique to explore whether there is a
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Air at 20°C (1 atm) is flowing over a 0.025-m diameter sphere with
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