Module 1 : Conduction
Lecture 1 : Introduction and Heat Diffusion Equation
 
Conduction(Intro)
  • Transfer of energy from more energetic particles to less energetic particles. Energy transfer between the neighboring molecules. Does not require bulk motion of molecules.
    In gases and liquids: conduction is due to collisions and of molecules during their random motion.
    In solid: energy transfer due to vibration of the molecules in a lattice.
Conduction(Contd.)
  • Rate equation to compute amount of heat energy transferred per unit time.
  • Fourier’s law
 
(1.1)
  • k, is thermal conductivity (W/m.K) and ‘n’ is the direction normal to the direction of lines of constant temperature