Measurements in pulsation reactors

Phase shift between temporal oscillations of pressure and OH concentration in pulsation reactor
Phase shift between temporal oscillations of pressure and OH concentration in pulsation reactor

Pulsation reactors are, e.g., used to produce nano-particles of defined properties (size distribution, porosity). The combustion process inside a pulsation reactor is based on the effects in the so called Schmidt tube.


temperature distribution in pulsation reactor vs. phase of pressure oscillation
temperature distribution in pulsation reactor vs. phase of pressure oscillation

Pulsation reactors have a constant-volume combustion with periodically self-excited oscillation of the state variables (pressure, temperature, gas velocity). The pressure oscillations cause an air or rather air/fuel supply into the combustion chamber. Complex relations between acoustics and chemical reaction kinetics have influence onto the combustion and unsteady flow processes.
We investigate pulsation reactors using, e.g., laser-induced fluorescence (LIF) to characterize OH, as well as temperature and particle distributions. The aim is a better understanding of the fundamental physical and chemical processes to enable the production of advanced nano-materials.

IPHT Jena

Deutsch | English


Contact

Head
Dr. Wolfgang Paa
Telefon +49 (0) 3641 206 411
Telefax +49 (0) 3641 206 499