Experiments have been conducted to determine local heat transfer coefficients fo

Question

Experiments have been conducted to determine local heat transfer coefficients for flow perpendicular to a long. isothermal bar of rectangular cross section. The bar is of width c parallel to the flow, and height d normal to the flow. For Reynolds numbers in the range 104 le Red le 5 times 104. the face-averaged Nusselt numbers are well correlated by an expression of the form The values of C and m for the front face, side faces, and back face of the rectangular rod are found to be the following: Determine the value of the average heat transfer coefficient for the entire exposed surface (that is. averaged over all four faces) of a c = 40 mm-wide. d = 30-mm-tall rectangular rod. The rod is exposed to air In cross flow at V = 10 m/s. T = 300K. Provide a plausible explanation of the relative values of the face-averaged heat transfer coefficients on the front, side, and back faces.

Explanation / Answer

http://books.google.co.in/books?id=vvyIoXEywMoC&pg;=RA1-PA420&lpg;=RA1-PA420&dq;=isothermal+bar+of+rectangular+cross+section&source;=bl&ots;=8HtjPTjZF6&sig;=-yeVTjUs-6B4OnFTusyo4opNgWk&hl;=en&sa;=X&ei;=d1JHUbf7EcLprQeIw4DQAg&redir;_esc=y#v=onepage&q;=isothermal bar of rectangular cross section&f;=false................ the question is from this book...............if it might helps you.......!!!!

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