A G Budin’s research while affiliated with Vyatka State University and other places

Polymer waste disposal of is one of the most pressing problems of our time. The incineration method is widespread, but it has its drawbacks. Problems during the polymer waste combustion, which include low combustion efficiency, combustion products toxicity, significantly reduce the possibility of waste disposal incinerators using. In this regard, the work considers the use of an electrostatic field to optimize the combustion process. Experimental studies of the electrostatic field influence on the substances difficult for disposal (polyethylene, polypropylene, polystyrene, rubber) combustion have been carried out. The possibility of increasing the polymer waste combustion rate, flame temperature, and combustion efficiency is shown.

The purpose of present work is to clarify the mechanisms of the electrostatic field influence on the polymers (PMMA) combustion in high enthalpy flows. For this, the PMMA temperature profiles during combustion in a hybrid rocket engine studies were carried out. Based on the results obtained the assumption about the intensification of the substance entrainment from the polymer surface combusting in a high-enthalpy flow under the electrostatic field influence is confirmed.

In the work, the influence of the electric force from the external electric field on the charged dispersed particles in the flame was evaluated. It is assumed that changes in the effect of the field on the combustion rate in the presence of dispersed additives in the gas phase take place due to the heat flux into the burning polymer condensed phase changes. However, as it turned out, the flame front moving towards the fuel under the action of field forces does not allow to fully explain the combustion rate increase.

Experimental data of the wood combustion in a high-enthalpy flow in the presence of an electrostatic field with a potential difference of 5 kV research are given. Considering the field effect combustion laws are obtained for birch, used as a solid fuel component in a hybrid rocket engine.

The paper presents experimental study results of the disperse admixtures in a flame plasma influence on the polymethylmethacrylate combustion rate change under the action of an electric field in a model hybrid rocket engine. It is shown that increase of disperse admixtures concentration in flame leads to the influence of the field on combustion intensification. An explanation of the results obtained on the basis of the ion-wind mechanism is proposed.

Design of the effective hybrid rocket engines requires development of adequate control methods for the condensed phase regression rates. There are two traditional approaches: prescription with catalytic additives and geometrical with oxidizer flux involution or burning channel profiling. Other methods are significantly less investigated, including using various fields for the combustion process control. The paper presents some experimental results on the influence of electrostatic field on the combustion rate for the PMMA - gaseous oxygen hybrid fuel engine. It was shown that it is possible to control engine thrust with parameters of the control field. Some analysis and model explanations are performed.

The paper presents research results of polymethylmethacrylate (PMMA) combustion in a hybrid rocket engine (HRE) under the influence of an electrostatic field. It is shown that the main mechanism of electrostatic field influence on the combustion rate is process changes in the condensed phase.

The experimental data of wood combustion in the high-enthalpy oxidizer flowresearch is presented. Combustion laws of two wood species (pine and birch) in a hybrid rocket engine (HRE) are obtained. Heat flows from the flame to the condensed phase surface are defined. The prospects of the wood use in the HRE (based on thrust characteristics) are shown.

The paper discusses the experimental investigation results of the potentials distribution (probing) and the excess charges in diffusion flames of propane and polymers - PMMA (polymethyl methacrylate) and divinyl rubber. The study of the excess charges distribution was made by analysis of flame deformation in the presence of an external lateral electrostatic field. The existence and the accumulation of excess charges in the flame are generally explained on the basis of consideration of the interaction processes of condensed phase particles and charges (electrons) generated during combustion in the presence of a dusty plasma. However, this mechanism does not give the opportunity to consider the sign and magnitude of the excess charges distribution in the flame, depending on the products composition and the value of the oxidant excess. It is unclear how oppositely charged immiscible streams of flame are formed and coexist.