Past examinations

Past examinations of the master courses given at ENSEEIHT Toulouse.

Associated ressources

Master 2006 - Wording and answers 

Master 20011 - Wording ans answers 

Requirements

Conservation equations:

• Mass fractions, molar fractions, equation of state, energies, enthalpies.
• Equations for species, diffusion speeds, Fick's law, Hirschfelder approximation.
• Several definitions for heat release, equations for energy and enthalpy, kinetics, heat of reaction of a single reaction.

1D laminar flames:

• Equations in the reference frame of the flame.
• Definitions of flame speed, link between flame speed and total fuel consumption in the domain, adiabtic flame temperature.
• Equation for reduced temperature assuming Le=1, stiffness of reaction rate depending on reduced temperature.
• Heat of reaction, propagation speed, flame thickness, link between flame speed and flame thickness.
• Displacement speed of spherical flames.

Diffusion flames:

• Passive scalars, mixture fraction, pure mixing line.
• Flame structure assuming infinitely fast chemistry, stoechiometric mixture fraction (Zst), maximum flame temperatures in diffusion and premixed flames, "Mixed is burned" approximation.
• Full solutions for unsteady unstrained and steady strained diffusion flames.

Turbulent premixed flames:

• Favre averaging, limits of filtered quantity computations, probability density function (pdf) methods, turbulent diffusion, EBU model.

Turbulent diffusion flames:

• Favre averaging, limits of filtered quantity computations, pdf methods assuming infinitely fast chemistry.
• Approximation using beta pdfs functions.
• Accounting for chemistry considering stretching.

Published on  September 29th, 2020