planches tupolev

1
ENSMA - Optical measurements / LES-4-LPP
 ORACLES rig 
Long exposure time 40 10-3 s Symmetrical shape
Short exposure time (2 10-3 s) Symmetrical shape
Pulsating behavior
LIF on OH very short exposure time (100 10-9 s)
Digitization
2
QinetiQ - Fuel Injector Measurements / LowNox III

• Measurement techniques and technology
  demonstrated
• Internal gas species, smoke and temperature
  profile mapping
• Combustor wall heat flux and smoke measurements
• Combustion instability detection using high
  frequency response transducers
• Enhanced convective cooling tiles on combustor
  walls provided effective wall cooling

ASC combustor
3
QinetiQ - Fuel Injector Measurements / LowNox III
Air meter

• Main features
• 16 bar operating pressure
• Mean air flow velocity gt100m/s
• Steady state operation
• Liquid can be kerosene or water
• Can study swirling and non-swirling flows
• Support high speed photography, laser light
  sheet and PDA techniques

Working section with optical windows
Air in
Settling chamber
Fuel injector
Exhaust chamber
High Pressure Fuel Injector Test Rig
4
QinetiQ - Fuel Injector Measurements / LowNox III
Generic fuel injector study in LOWNOXIII Programme
PDA instrument and atomiser rig
Laser light sheet flow visualisation
Sauter mean diameter of droplets
Axial velocity of jet
5
Onera - PDA on a stream of monosized droplets /
LowNox III
 Parametric Study of Autoignition 
Combustion chamber
6
Onera - PDA on a stream of monosized droplets /
LowNox III
 Parametric Study of Autoignition 
P5 bar T300K
7
Onera - Optical analysis of premixed injection
systems / LowNox III
  Autoignition  Flashback
Performed PDA, LDV, photoelectric cells
8
ITS Karlsruhe - IR extinction for fuel spray
experiments / LowNox III

• Development of a measurement technique
• design of optical setup
• development of a tomographic deconvolution
  algorithm for circular cross-sections

9
ITS Karlsruhe - IR extinction for fuel spray
experiments / LowNox III

• local concentrations of gaseous kerosene in a
  premix-duct
• influence of temperature on fuel evaporation
• Influence of fuel type on local air fuel ratio