Obtain by dimensional analysis a functional relationship for the wallheat transfer coefficient h (W/m2-K) for a fluid flowing through astraight pipe of circular cross section. Assume that the effects ofnatural convection may be neglected in comparison with those offorced convection. Taking the heat transfer coefficient, h, as afunction of the fluid velocity, density, viscosity specific heat andthermal conductivity, v, p, H, Cp and k, respectively, and of the insidediameter of the pipe, d. For recurring set, the variables d, u, k, and p. Itfound by experiment that, when the flow is turbulent, increasing theflowrate by a factor of 2 always results in a 60 percent increase in thecoefficient. How would a 50 percent increase in density of the fluid beexpected to affect coefficient, all other variables remaining constant?

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Obtain by dimensional analysis a functional relationship for the wall heat transfer coefficient h (W/m2-K) for a fluid flowing through a straight pipe of circular cross section. Assume that the effects of natural convection may be neglected in comparison with those of forced convection. Taking the heat transfer coefficient, h, as a function of the fluid velocity, density, viscosity specific heat and thermal conductivity, v, p, µ, Cp and k, respectively, and of the inside diameter of the pipe, d. For recurring set, the variables d, u, k, and p. It found by experiment that, when the flow is turbulent, increasing the flowrate by a factor of 2 always results in a 60 percent increase in the coefficient. How would a 50 percent increase in density of the fluid be expected to affect coefficient, all other variables remaining constant?

Obtain by dimensional analysis a functional relationship for the wall heat transfer coefficient h (W/m2-K) for a fluid flowing through a straight pipe of circular cross section. Assume that the effects of natural convection may be neglected in comparison with those of forced convection. Taking the heat transfer coefficient, h, as a function of the fluid velocity, density, viscosity specific heat and thermal conductivity, v, p, µ, Cp and k, respectively, and of the inside diameter of the pipe, d. For recurring set, the variables d, u, k, and p. It found by experiment that, when the flow is turbulent, increasing the flowrate by a factor of 2 always results in a 60 percent increase in the coefficient. How would a 50 percent increase in density of the fluid be expected to affect coefficient, all other variables remaining constant?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

Obtain by dimensional analysis a functional relationship for the wall
heat transfer coefficient h (W/m2-K) for a fluid flowing through a
straight pipe of circular cross section. Assume that the effects of
natural convection may be neglected in comparison with those of
forced convection. Taking the heat transfer coefficient, h, as a
function of the fluid velocity, density, viscosity specific heat and
thermal conductivity, v, p, H, Cp and k, respectively, and of the inside
diameter of the pipe, d. For recurring set, the variables d, u, k, and p. It
found by experiment that, when the flow is turbulent, increasing the
flowrate by a factor of 2 always results in a 60 percent increase in the
coefficient. How would a 50 percent increase in density of the fluid be
expected to affect coefficient, all other variables remaining constant?

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