Department of High-Speed Processes Laboratory of Heterogeneous Media Laboratory of Gas Detonation Explosion Physics Laboratory Laboratory of Detonation Flows

Laboratory of Heterogeneous Media Continuous spin detonation in LRM -type combustion chambers

Continuous spin detonation in ramjet-type combustion chambers

Fuel-air mixtures

Detonation Removal of Rough Wire-Edges On the left – rough edges after mechanical processing (before DW treatment) On the right – normal edges after treatment by DW

Critical “diameter” of DW-diffraction DW-failure DW-reinitiation Laboratory of Gas Detonation

Whole failure of detonation and flame!!! Typical self-luminosity photographs for marginal (left) and over-driven DW.

Influence of initiator form (sequential) The critical conditions of initiation of cylindrical DW by two parallel linear charges, z – distance about charges. The area below the dotted horizontal line corresponds to greater efficiency of distributed charges in comparison of compacted charge. Initiation by multi-points schema.

Detonation Hazard. Prognostic estimation 1)Model of one-dimensional initiation for numerical calculation (equations system of one-dimensional gas-dynamics and kinetics); 2)Semi-empirical models for initiation of one-dimensional DW; 3)The initiation model of multi-front DW. One-dimensional numerical calculation were carried out for limiting quantity of mixtures (about ten). Requirement – hundreds of different compounds. In LIH (Novosibirsk) – Code «SAFETY», used whole known models 2) – 3).

Detonation Cleaning of Technological Equipment from Dust Deposit (tangential influence) The creation of powerful SW with the help of DW The effect of SW on dust deposit and its destruction С 2 H 2 +2,5O 2 SW-reflector

Detonation Cleaning of Technological Equipment from Dust Deposit (tangential influence) Typical photo of electrofilter with dust deposit (light area) One cycle of cleaning of electrofilter with the help of traditional hammer system (m=7 kg, vibration acceleration about 150 g) – dark areas One cycle of cleaning of electrofilter with the help of DW system (vibration acceleration about 4000 g)

Explosion Physics Laboratory Typical explosion characteristics: detonation velocity 7000 m/s, pressure Pa, temperature K, time s, space 1 mm.

Experimental setup for density dynamics investigation

Stochastic simulation of structure of electrical breakdown LightningBreakdown in plexiglas

Lattice Boltzmann equation method for simulation of two-phase flows Coagulation of conductive droplets under action of electric field This method does not require the boundary conditions at interface layers.

Laboratory of Detonation Flows DETONATION SPRAYING EQUIPMENT CERAMIC COATINGS WEAR-RESISTANT COATINGS GLOBAL CHEMICAL PROCESSES IN ATMOSPHERE

Controlleran IBM-compatible personal computer Electric power consumption up to 1 KW Working gases Fuel:acetylene or propane, butane, propylene, hydrogen and other combustible gases Oxidizer: oxygen Inert gas:nitrogen, etc. Maximal operating frequency: 6 shots/sec Maximal productivity:2 kg of powder / hour Maximal powder utilization:70% Maximal coating thickness in one shot: 10 mkm Maximal coating thicknessno limit Coating hardness:up to 450 MPa Coating porosity:less than 1% Microhardness of tungsten carbide with cobalt coatingsup to 1300 Hv DETONATION SPRAYING EQUIPMENT CONTROL COMPUTER DETONATION GUN ROBOT - MANIPULATOR

HIGH - VOLTAGE INSULATION FOR EXTREME CONDITIONS CERAMIC COATINGS Parts of nuclear physics facilities with alumina coating HYDROGENE POWER ENGINEERING AND NEUTRALIZATION OF EXHAUST FUMES The base for catalysis reactor (refractory foil with alumina coating) Catalysis reactor for conversion gasoline-air mixture into ( H 2 + CO) gas ( 100 micron wire-net with alumina coating )

WEAR-RESISTANT COATINGS Turbine blade for air-engine with WC+Co coating Automobile parts restored with self-fluxing alloy coating