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Thermal Sciences

working pillar 1

Thermodynamics, heat transfer and combustion — energy accounting, energy transport, and energy release.

Pages

Page Covers
Thermodynamics Laws, entropy generation and exergy, cycles, real-gas behaviour, the statistical connection
Heat transfer Conduction, convection and radiation; Biot, Nusselt and the groups that pick the model
Combustion Stoichiometry, flame temperature, kinetics, premixed and diffusion flames, turbulent regimes, pollutants

Why this section exists

It was added late, and for a specific reason: the course archive holds twelve courses across these three subjects — engineering and statistical thermodynamics, heat transfer, radiative heat transfer, three separate combustion courses and laser diagnostics for combustion — and the site had no page for any of them. Thermal science was appearing only as a passing mention inside propulsion and governing equations.

That is the kind of gap a catalogue is for: it made visible a body of material the navigation tree had no home for.

The theme

Two clocks, and their ratio. Thermodynamics asks what is possible given infinite time — equilibrium, Carnot, the flame temperature you would reach. Heat transfer and combustion ask how fast, and the answer is always a competition between a transport rate and a chemical or diffusive one.

Every practically important quantity lives in the gap between those two questions:

  • Exergy destruction is the price of doing things at finite rate rather than reversibly.
  • The Biot number compares conduction inside an object with convection off its surface.
  • The Damköhler number compares turbulent mixing with chemical reaction.
  • Pollutants exist only because kinetics does not reach equilibrium.

Equilibrium sets the ceiling; rates decide what you actually get.

Connections