3013-10 Lecture 15 - Introduction to Convection

3013-10 Lecture 15 - Introduction to Convection - 2 of 2...

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CHE 3013 – Fall 11 1 of 2 Smay Lecture 15 Introduction to Convection Assignments Hw-6 due Friday, October 1 Assigned Reading Chapter 6, Incropera, et al., pp 348-364 Handouts (on D2L unless stated otherwise) Introduction to Convection.pdf Outline 1. General discussion of convection. 2. Two mechanisms associated with convection. 3. Newton’s law of cooling. 4. Local and average convective heat transfer coefficients. 5. Thermal boundary layer of thickness δ T. 6. Analytical definition of h. Key Concepts 1. See attached summary Key Skills 1. Determine local heat transfer coefficient from T-x diagram.
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CHE 3013 – Fall 11
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Unformatted text preview: 2 of 2 Smay Summary of Basic Concepts 1. surface a over t coefficien convection average t coefficien convection local = = h h 2. ( ) ( ) x x T = = layer boundary Thermal layer boundary Velocity By definition, convective heat transfer occurs within the thermal boundary layer. 3. ( ) = = T T y T k h s y f 4. ( ) ( ) ( ) ( ) ( ) x h h h h h x h h > > = plate isothermal an over flow For 5. Turbulent flow conditions result in higher convective heat transfer rates than laminar flow, all other factors being equal....
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This note was uploaded on 10/11/2011 for the course CHE 3013 taught by Professor Staff during the Fall '11 term at Oklahoma State.

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3013-10 Lecture 15 - Introduction to Convection - 2 of 2...

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