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Chapter

# - Problems

DOI link for - Problems

- Problems book

# - Problems

DOI link for - Problems

- Problems book

## ABSTRACT

When a premixed fuel:air mixture is ignited, the flame is established at a distance L from the burner. The theory behind such a phenomenon is that as the mixture is lit, the flame propagates toward the burner with a velocity S; however, the flame is stabalized at L because the gas velocity is equal and opposite to S. The flame velocity is a function of stoichiometry. Assuming that the flame is anchored at x and y such that the fuel is locally in stoichiometric proportion to oxygen, and gas velocity at that point is equal to S, derive an expression for that location. (Hint: Chapter 12.)

Problem 15.4:

Show that

∫

(1

−

q

) exp(

−

E*/

q

) d

q

≈

{exp(

−

E*)/E*

} [1

−

6/ E*

+

36/E*

]; ignore values due to lower limits, i.e., exp(

−

E*) >> exp(

−

E*/

q

).

Problem 15.5.