V. Krishko’s research while affiliated with Riga Technical University and other places

Magnetic field effect on combustion dynamics of the swirling flame flow is studied experimentally with the aim to obtain a cleaner and more effective combustion of a renewable fuel (wood pellets), providing a joint research of magnetic field effects on the swirling flame velocity field formation, processes of heat/mass transfer and combustion of volatiles at different stages of wood fuel burnout. The magnetic field effect on the swirling flame flow formation and combustion of volatiles is also studied experimentally using a pilotscale experimental device consisting of a wood fuel gasifier, water-cooled sections of the combustor with diagnostic sections between them for measuring the swirling flame velocity, temperature and composition field formation as well as the field effect on the heat production rate. The results show that the magnetic field effect on combustion dynamics must be related to the field-induced mass transfer of paramagnetic flame species (oxygen, nitrogen oxide) in the field direction, depending on magnetic force acting on the swirling flow field. Because of the magnetic field-induced magnetic force action, local variations of the flame velocity, temperature and composition fields are detected and discussed. The results show that the magnetic field effect on the swirling flame flow can be used as a tool to ensure a more effective burnout of volatiles and a cleaner heat energy production.

When burning fossil fuels and renewable energy resources, greenhouse emissions (GHG) are emitted into the atmosphere. One of the options to reduce GHG emissions is to apply a magnetic field. The effect of a gradient magnetic field on the gasification of renewable fuel and the combustion of volatiles by applying the field to the bottom part of the swirl flame with recirculation is studied for the conditions of field-enhanced reverse heat and mass transfer of paramagnetic flame species up to the layer of wood pellets. The aim of research to investigate the magnetic field effect on swirling flame dynamics for the conditions of self-sustaining wood fuel combustion and by cofiring with propane flow.