Question
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Air at 25°C is flowing over 400°C hot iron ball with a velocity of 10 m/s....
Air at 25°C is flowing over 400°C hot iron ball with a velocity of 10 m/s. The diameter of the iron ball is 10 cm diameter and (p =7874 kg/m3 and cP = 450 J/kg.K). After a while the surface temperature of the ball drops to 300°C.
- Determine the average rate of heat transfer from the ball.
- How long will it take to drop from 400°C to 300°C.
- Calculate the drag force. (The surface of the ball is smooth.)
Solutions
Amanda K answered 3 months agoRelated Solutions
Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 20 m/s, while the...
Air at 25°C flows over a 10-mm-diameter sphere with a velocity
of 20 m/s, while the surface of the sphere is maintained at 75°C.
What is the rate of heat transfer from the sphere? q = ___ W ?
Please provide correct final answer for guaranteed
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Air at 20°C (1 atm) is flowing over a 0.025-m diameter sphere with
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constant at 80°C, determine the Reynolds number corresponding to
the sphere, its average drag co-efficient, and the heat transfer
rate from the sphere. The properties of air (1 atm) at the free
stream temperature T∞ = 20°C, ρ = 1.204
kg/m3, k = 0.02514
W/m∙K, μ = 1.825 × 10−5 kg/m∙s,
and Pr = 0.7309. At the surface
temperature Ts=
80°C: μs =...
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The heat flux at a distance x = 0.6m from the front edge of the
plate, q” = ____________
The location of the maximum heat flux on the plate, x =
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The total...
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temperature of 75 C. A) Find the transition location on the plate
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the same velocity and temperature. The flat plate is made from
copper.
Cold air at temperature of 10 C and velocity of 3 m/s is moving parallel to...
Cold air at temperature of 10 C and velocity of 3 m/s is moving
parallel to a flat plate with the length of 6 m and surface
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