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Parallel flow of atmospheric air over a flat plate of length L=3 m is disrupted by an array of stationary rods placed in the flow path over the plate. Laboratory measurements of the local convection coefficient at the surface of the plate are made. The results are correlated by an expression of the form hx = 0.7 + 13.6x - 3.4 x² , where hx has units of W/m²K and x is in meters. Evaluate the average convection coefficient for the entire plate and the ratio of average to local heat transfer coefficient at the trailing edge. KNOWN: Distribution of local convection coefficient for obstructed parallel flow over a flat plate. FIND: Average heat transfer coefficient and ratio of average to local at the trailing edge. SCHEMATIC: -hx=0.7+13.6x-34x² Air Too, V L=3m

Parallel flow of atmospheric air over a flat plate of length L=3 m is disrupted by an array of stationary rods placed in the flow path over the plate. Laboratory measurements of the local convection coefficient at the surface of the plate are made. The results are correlated by an expression of the form hx = 0.7 + 13.6x - 3.4 x² , where hx has units of W/m²K and x is in meters. Evaluate the average convection coefficient for the entire plate and the ratio of average to local heat transfer coefficient at the trailing edge. KNOWN: Distribution of local convection coefficient for obstructed parallel flow over a flat plate. FIND: Average heat transfer coefficient and ratio of average to local at the trailing edge. SCHEMATIC: -hx=0.7+13.6x-34x² Air Too, V L=3m

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Question 2: Parallel flow of atmospheric air over a flat plate of length L=3 m is disrupted by an array of stationary rods placed in the flow path over the plate. Laboratory measurements of the local convection coefficient at the surface of the plate are made. The results are correlated by an expression of the form hx = 0.7 + 13.6x - 3.4 x² , where hx has units of W/m?K and x is in meters. Evaluate the average convection coefficient for the entire plate and the ratio of average to local heat transfer coefficient at the trailing edge. KNOWN: Distribution of local convection coefficient for obstructed parallel flow over a flat plate. FIND: Average heat transfer coefficient and ratio of average to local at the trailing edge. SCHEMATIC: -hx=0.7+13.6x-34x² Air Too, V L= 3m
Transcribed Image Text:Question 2: Parallel flow of atmospheric air over a flat plate of length L=3 m is disrupted by an array of stationary rods placed in the flow path over the plate. Laboratory measurements of the local convection coefficient at the surface of the plate are made. The results are correlated by an expression of the form hx = 0.7 + 13.6x - 3.4 x² , where hx has units of W/m?K and x is in meters. Evaluate the average convection coefficient for the entire plate and the ratio of average to local heat transfer coefficient at the trailing edge. KNOWN: Distribution of local convection coefficient for obstructed parallel flow over a flat plate. FIND: Average heat transfer coefficient and ratio of average to local at the trailing edge. SCHEMATIC: -hx=0.7+13.6x-34x² Air Too, V L= 3m
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