Question
In: Mechanical Engineering
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
Solutions
samet mamat answered 1 year agoRelated Solutions
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A 1.5 kg solid brass sphere is initially at a temperature of
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Drag measurements were taken for a 5 cm diameter sphere in water at 20 °C to...
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m2/s and kinematic viscosity of air (v) = 1.46
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Perform the Buckingham Pi theorem to generate a relationship
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Assume the drag FD is a...
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...
A thin plate is initially at a uniform temperature of 200°C. At a certain timet =...
A thin plate is initially at a uniform temperature of 200°C. At
a certain timet = 0 the temperature of the east side of
the plate is suddenly reduced to 0°C. The other surface is
insulated. Use the explicit finite volume method in con- junction
with a suitable time step size to calculate the transient
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analytical solution at time (i) t = 40 s, (ii) t
= 80 s and...
Water at 15°C enters a tube of 2 cm of diameter with flow rate 3953 kg/h....
Water at 15°C enters a tube of 2 cm of diameter with flow rate
3953 kg/h. Assume the ratio L/D >10, and the wall temperature is
constant at 80◦C. The outlet temperature is 50°C The properties of
water at the film temperature are density rho = ? = 985 ?/?3,
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100 people enter a room that is initially at a temperature of 15 C and pressure...
100 people enter a room that is initially at a temperature of 15
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100. mL of H2O is initially at room temperature (22.0∘C). A
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A spherical steel ball bearing has a diameter of 2.540 cm at 29.00°C. (Assume the coefficient...
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(a) What is its diameter when its temperature is raised to
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