Heat conduction

From Thermal-FluidsPedia

Revision as of 17:15, 23 November 2009

Conduction is heat transfer across a stationary medium, either solid or fluid. For an electrically nonconducting solid, conduction is attributed to atomic activity in the form of lattice vibration, while the mechanism of conduction in an electrically-conducting solid is a combination of lattice vibration and translational motion of electrons. Heat conduction in a liquid or gas is due to the random motion and interaction of the molecules. For most engineering problems, it is impractical and unnecessary to track the motion of individual molecules and electrons, which may instead be described using the macroscopic averaged temperature.

• Basics

• Steady State Heat Conduction

One-dimensional heat conduction (including finite slabs, cylindrical and spherical walls, extended surface, and bioheat equation), two-dimensional conduction, conduction from buried object

• Unsteady State Heat Conduction

Lumped analysis, one-dimensional heat conduction (including finite slabs, cylinders, spheres, and semi-infinite body), and multidimensional conduction.

• Numerical Solution of Heat Conduction

Discretization of computational domain and governing equations, one-dimensional steady and unsteady state conduction, multi-dimensional unsteady-state conduction, and solution of algebraic equations

• Melting and Solidification

Classifications, boundary conditions at interface,exact solutions, integral approximate solution, numerical solution, binary system, and melting and solidification in porous media.

• Microscale Heat Conduction

Hyperbolic model, Dual-Phase Lag (DPL) model, and Two-temperature models.

• Related Topics

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