HW6ME525SP2011

HW6ME525SP2011 - 1 ME 525 Homework#6 Due Thursday Prof...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 ME 525 Homework #6 Due Thursday, April 28, 2011 Prof. Lucht (E-mail address: [email protected] ) (Note: There are six problems on this homework assignment.) 1. Consider a jet diffusion flame with ethylene (C 2 H 4 ) as the fuel issuing into still air. The nozzle diameter is 10 mm and the initial jet velocity of the ethylene is 5 mm/sec. The pressure is 1 bar and both the ethylene and the surrounding air are initially at 300 K. The viscosity of ethylene is 102.3x10 -7 N-sec/m 2 at 300 K. Assume that the mixture fraction as a function of position in the flame can be determined using the non-reacting jet solution from Turns. Use the adiabatic equilibrium code HPFLAME to determine state functions for temperature and the mole fractions of O 2 , CO 2 , and CO as a function of mixture fraction f . Plot the temperature, the mole fractions, mixture fraction, and axial and radial velocities as a function of radius at the jet half- height L f /2, where f L is the axial distance from the nozzle at which the mixture fraction drops to its stoichiometric value. Answer:  2 2 0.128 ,, 2 1 216 f L fx r f r r       , 0.0638 stoich f 2. Use Roper's correlation to calculate the laminar flame lengths for the following fuel mixture
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/27/2011 for the course ME 525 taught by Professor Lucth during the Fall '11 term at Purdue.

Page1 / 3

HW6ME525SP2011 - 1 ME 525 Homework#6 Due Thursday Prof...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online