Definition of Rayleigh number in English:

Rayleigh number

Syllabification: Ray·leigh num·ber

noun

Physics
  • A dimensionless parameter that is a measure of the instability of a layer of fluid due to differences of temperature and density at the top and bottom.
    More example sentences
    • By the mid-twentieth century, geophysicists had determined that the Earth's mantle was likely to advect heat from the core, because its Rayleigh number far exceeds the convective threshold.
    • Further, Honda et al. assume constant viscosity, which is an important element of the Rayleigh number.

More definitions of Rayleigh number

Definition of Rayleigh number in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody