Q5) For laminar free convection from a heated vertical surface, the local convection coeffi may be expressed as h, = Czx-1/4, where h, is the coefficient at a distance x from the lea edge of the surface and the quantity C, which depends on the fluid properties, is indeper of x. Obtain an expression for the ratio h/hy, where x is the average coefficient betwee Jonding odgo (r O) ond the x loeetion S kotoh the veriotion of h ond b with

Q5) For laminar free convection from a heated vertical surface, the local convection coeffi may be expressed as h, = Czx-1/4, where h, is the coefficient at a distance x from the lea edge of the surface and the quantity C, which depends on the fluid properties, is indeper of x. Obtain an expression for the ratio h/hy, where x is the average coefficient betwee Jonding odgo (r O) ond the x loeetion S kotoh the veriotion of h ond b with

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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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

Q5)
For laminar free convection from a heated vertical surface, the local convection coefficient
may be expressed as hy = Cxx-1/4, where h, is the coefficient at a distance x from the leading
%3D
edge of the surface and the quantity C, which depends on the fluid properties, is independent
of x. Obtain an expression for the ratio hx/hx, where x is the average coefficient between the
leading edge (x = 0) and the x-location. Sketch the variation of h, and h, with x.

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