Engineering, 15.04.2020 20:00 Koriunaa
At higher Reynolds numbers, the local heat transfer coefficient in the wake region behind a sphere is higher than on the front surface because:
a. The boundary layers in the wake region are turbulent.
b. There is strong mixing in the wake region.
c. The flow in the wake region is unsteady.
Answers: 1
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Fluids at rest possess no flow energy. a)- true b)- false
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Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
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Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
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For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 ยฐf at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
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At higher Reynolds numbers, the local heat transfer coefficient in the wake region behind a sphere i...
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