Find out the local convection coefficient for a flow over a flat plate at a distance of 0.2 m from the leading edge. The fluid is water at 60°C with a velocity of 2 m/s. The plate maintains a uniform temperature. Assume the film temperature to be 40°C. 64429 W2 W/m²K Is the flat plate losing heat to or gaining heat from the water flow? Justify.
Find out the local convection coefficient for a flow over a flat plate at a distance of 0.2 m from the leading edge. The fluid is water at 60°C with a velocity of 2 m/s. The plate maintains a uniform temperature. Assume the film temperature to be 40°C. 64429 W2 W/m²K Is the flat plate losing heat to or gaining heat from the water flow? Justify.
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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Transcribed Image Text:**Problem Statement:**
Find out the local convection coefficient for a flow over a flat plate at a distance of 0.2 m from the leading edge. The fluid is water at 60°C with a velocity of 2 m/s. The plate maintains a uniform temperature. Assume the film temperature to be 40°C.
Calculated local convection coefficient: **6492.9 W/m²K**
**Question:**
Is the flat plate losing heat to or gaining heat from the water flow? Justify.
**Analysis:**
- The direction of heat transfer depends on the temperature difference between the water and the plate.
- Since the water temperature (60°C) is higher than the assumed film temperature (40°C) of the plate, the water will transfer heat to the plate.
- Therefore, the flat plate is gaining heat from the water flow.
This analysis is supported by the calculated convection coefficient which indicates the rate of heat transfer per unit area per unit temperature difference between the fluid and the solid surface.
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