Question

Consider a slot burner with an aspect ratio h/b= 10 and slot width b=2mm. The slot has a contoured entrance that produces a uniform exit flow. Operating with methane, the burner has a heat release of 500W. Determine the flame length.

Answer 1

density of methane = (16 * 101.32)/(8.315 * 300)

                               =   0.650 kg/m³

=> fuel flow rate = 0.5/(0.650 * 50 * 1000)

                            = 1.54 * 10^-5 m³/s

Thus, the flame length = [(2.961) * (1.54 * 10^-5)⁴/0.02]^1/3 * 8.88 * 10⁴

                                   = 0.18 m