2. Calculating the thermal conductivity of gases
The kinetic theory of gases assumes that all molecules are non-interacting rigid spheres of mass m and diameter σ moving at an average velocity v. The number of molecules per unit volume is n. Under the influence of a temperature gradient, the molecules move, collide and bring a certain amount of energy into play. This energy flow q
z
between two gas layers is proportional to the energy density :
with :
- c V :
-
constant-volume heat capacity per molecule
The Ultimate Scientific and Technical Reference
This article is included in
Characterization and properties of matter
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Calculating the thermal conductivity of gases
Thermal conductivity of liquids
References
The Ultimate Scientific and Technical Reference
