Soot formation

  • What are five key global steps of soot formation?
  • What is a typical soot volume fraction?
  • What is a typical primary particle size?
  • What is a good value for the soot mass density?
  • Why does soot not diffuse like gaseous species?
  • What is the mechanism for soot diffusion called, and what is the driving “force” that causes the diffusion?
  • Write the definition of a soot moment.
  • What is the physical meaning of $M_0$, and $M_1$.
  • Assuming spherical particles, write the equation for the soot diameter in terms of $M_0$ and $M_1$, and the soot mass density.
  • What is the closure problem of the method of moments?
  • What are three closure models for the method of moments?