PPT-Chapter 8 : Convection – Internal Flow

1 Aim develop an appreciation for the physical phenomena associated with internal flow and to obtain convection coefficients Contents Entrance region vs fully developed region Hydrodynamic effect consideration. Management Structure. 1. Senior or Executive Management. . High level responsibility, . . High level decision making. 2. Middle Managers. . In charge of designated departments. . Store managers . For a constant property, laminar flow a . similarity solution. exists for the flow field . u. (. y. ). local boundary layer thickness. local skin friction coefficient. average skin friction coefficient. Laminar Flow in Circular Tube. : Analytical. local Nusselt number . is . constant. . in . fully develop region. depends on surface thermal condition. constant heat flux. constant surface temperature. Heat and Work transfer. (quantitatively). Thermodynamics & Heat Transfer. Thermodynamics. Heat Transfer. Study of . “How heat flows”. every activity involves heat transfer. . Driving Potential. 5 FINITE ELEMENTS FOR HEAT . TRANSFER PROBLEMS. FINITE . ELEMENT ANALYSIS AND DESIGN. Nam-Ho . Kim. HEAT CONDUCTION ANALYSIS. Analogy between . Stress . and . Heat Conduction Analysis. In finite element viewpoint, two problems are identical if a proper interpretation is given.. Part 2 – Modes of Isolated Organization. AOS 453 – Spring 2014. 4/3/. 2014. Structure Of DMC Lectures This Week. Tuesday. DMC (Convective/Convection) Initiation. Chapter 7 in MR09. Isolated DMC Organization (Part 1). . Convection Heat Transfer . Why is it windy at the seaside?. Cold air sinks. Where is the freezer compartment put in a fridge?. Freezer compartment. It is put at the top, because cool air sinks, so it cools the food on the way down.. Introduction to Convection. Convection denotes energy transfer between a surface and a fluid moving over the surface.. The dominant contribution due to the bulk (or gross) motion of fluid particles.. Free Convection (or Natural Convection). fluid motion . induced by . buoyancy forces. buoyancy forces . arise when there are . density gradients . in a fluid and a . body force. . proportional to density arises . effects of terrain on . precipitation. The wind began to blow steadily out of the west and pour the water of the distant seas on the dark heads of the hills . … . J.R.R. Tolkien, The Lord of the Rings. 1. V. – upstream velocity (approaching velocity). u. . - free stream velocity (relative velocity compare to the body). Chapter 7 : Convection – External Flow : Cylinder in cross flow . 2. Re. 1. Aim : . develop an appreciation for the physical phenomena associated with internal flow and to obtain convection coefficients. Contents:. Entrance region . vs. fully developed region. Hydrodynamic effect consideration. Quantifying Heat Advection by Groundwater Flow in the Active Layer - Laboratory Simulations - S. Veuille 1,2 , M. Verpaelst 1,2 , S. Charbonneau 1 , K. Grandmont 1,2 , D. Fortier 1,2,3 1 Geography Why is it windy at the seaside?. Cold air sinks. Where is the freezer compartment put in a fridge?. Freezer compartment. It is put at the top, because cool air sinks, so it cools the food on the way down..