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Article
Features of Nonstationary Filtration Combustion Wave Propagation in a Model One-Layer Porous Medium
Temperature characteristics of a filtration combustion wave propagating upstream against a fresh mixture in a one-layer porous medium is studied experimentally using thermal imaging. The design of a model poro...
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Article
PHYSICAL MECHANISMS OF VAPOR BUBBLE COLLAPSE DURING LASER-INDUCED BOILING
Effects of various physical mechanisms at the stage of vapor bubble collapse and the subsequent formation of a shaped-charge jet in the process of laser-induced boiling near the end of a thin waveguide immerse...
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Article
Numerical study of the effect of fuel droplets on the combustion proceeding under typical conditions of hybrid rocket engines
The results of numerical simulation of a gas-droplet fuel mixture combustion in an oxidizer flow under the conditions typical of hybrid rocket engines are presented. The effect of the size and rate of supply o...
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Article
Modeling of filtration combustion of gases in a cylindrical porous burner with allowance for radiative heat transfer
The problem of stabilization of the wave of filtration combustion of a premixed mixture of gases in a porous cylindrical burner is solved numerically. Two formulations of the problem are considered. In the fir...
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Article
Regimes of combustion of a premixed mixture of gases in a heated microchannel with the wall temperature smoothly increasing in the downstream direction
Specific features of the unsteady flame in a microchannel with a controlled wall temperature are theoretically studied within the framework of a one-dimensional diffusion-thermal model. The case with the chann...
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Article
Modeling of combustion of premixed mixtures of gases in an expanding channel with allowance for radiative heat losses
Characteristics of the radiative heat flux from an expanding microchannel with combustion of a premixed mixture of gases are theoretically studied within the framework of a onedimensional diffusion-thermal mod...
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Article
Inertial effects in nonstationary models of flame front evolution
The objective of the present study is to formulate flame front evolution models capturing the effects of flame extinction, ignition, and oscillations in addition to the conventional regime of flame propagation...
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Article
Formation of dynamic spatial flame structures for gas burning in microchannels with temperature gradients on walls
The thermal-diffusive model was applied to the problem of flame propagation in a microchannel with controlled temperature distribution in the walls; this demonstrated the possibility of formation of oscillatin...
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Article
Development and experimental investigation of small-sized thermo-electric generator with diffusion combustion
Laboratory samples of small-sized energy converters based on thermo-electric method of heat conversion which source is diffusion microflame are presented in the work. Processes of combustion, energy conversion...
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Article
Hydrodynamic instability of inward-propagating flames
The influence of hydrodynamic instability on the propagation velocity and distortion of an inward-propagating cylindrical flame is investigated theoretically and numerically. Theoretical investigations are con...
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Article
Splitting flames in a narrow channel with a temperature gradient in the walls
A possibility of simultaneous formation of two chemical reaction fronts during nonstationary combustion of a gas in a microchannel with a temperature gradient in the walls is demonstrated. Combustion in a stra...
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Article
Specific features of combustion in a variable-section narrow channel with a periodically changing gas flow
Results of numerical and theoretical research of flame behavior in a periodically changing gas flow during combustion in a variable-section narrow channel are presented. The influence of the mean mass flow of ...
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Article
Analytical and numerical modeling of a spherical diffusion microflame
A mathematical model of a spherical diffusion flame with heat losses and with allowance for incomplete combustion is proposed. The effect of heat losses and mass flow rate of the fuel on the degree of combusti...
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Article
Estimates of efficiency of a small-size thermoelectric channel in terms of conversion of heat produced by gas combustion to electric power
Stationary regimes of combustion in an energy-conversion system are studied, and its efficiency is estimated. This system is a channel with thermoelectric converters embedded into the channel walls and with co...
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Article
Flame stability in a system with counterflow heat exchange
Propagation of two flame fronts in a mixture of gases in adjacent channels with oppositely moving gas flows is described within the framework of a one-dimensional model. Stationary solutions of the problem are...
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Article
Characteristics of Microscale Combustion in a Narrow Heated Channel
The characteristics of microscale combustion were investigated by using a microchannel heated by an external source. The inner diameter of the channel was 2 mm, which was slightly smaller than the quenching di...
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Article
Thermal Interaction of Two Flame Fronts Propagating in Channels with Opposing Gas Flows
A one‐dimensional nonstationary model is presented for propagation of two premixed flame fronts in narrow plane channels with regard for thermal interaction of flames through a dividing wall. The gas flows in ...
