Question

Consider an axisymmetric nonpremixed laminar jet flame of a hydrocarbon fuel into air, with fuel and air at ambient pressure (1 atm) and temperature (300 K). The flame height Lf for a particular reference condition (a specified fuel type, fuel tube diameter , and fuel jet velocity) is measured to be Lf0=30 mm. Estimate the flame height Lf for each of the following conditions:

a.

The fuel jet velocity is doubled, with all other parameters remaining the same as for the reference flame.

b.

The fuel type is altered in a manner that doubles the stoichiometric value of the fuel mass fraction, with all other parameters remaining the same as for the reference flame.

c.

The fuel jet diameter is doubled, with all other parameters remaining the same as for the reference flame.

Answer 1

SOLUTION: