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?