Mass and heat transfer to an ellipsoidal particle

✍ Scribed by Dana T. Grow

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 267 KB
• Volume: 80
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(90)90128-e

✦ Synopsis

NOMENCLATURE a semimajor axis of particle (m) b, c semiminor axes of particle (m) C concentration of oxygen (mol m -3) Co oxygen concentration in bulk gas stream (kg m -3) C1 constant of integration C2 constant of integration D diffusion coefficient (m 2 s -l) dp particle diameter (m) h heat transfer coefficient (J m -2 s -l K -l) h average heat transfer coefficient (J m -2 s-t K-I) hi --g')]l/2/2R AH enthalpy of combustion reaction (J kg -l) kc chemical rate constant (kg m -2 s -1 pa-0.5) kdif average diffusion mass transfer coefficient (kg m -2 s -1 Pa -l) N mass flux at surface (kg m -2 s -l) NU Nusselt number average mass flux (kg m -2 S -l ) Nrnax maximum mass flux at surface (kg m -2 S -l) Nmin minimum mass flux at surface (kg m -2 S -1 ) Nsp mass flux for spherical particle at surface (kg m -2 s -l) P02

partial pressure of oxygen (Pa) Ps surface pressure of oxygen averaged over the particle surface (Pa) q heat flux (J m 2 s -l) t/ average heat flux (J m 2 s -1)