Collision of transverse detonation waves in gases

1976 ◽  
Vol 11 (3) ◽  
pp. 411-414 ◽  
Author(s):  
V. A. Subbotin
Keyword(s):  
Detonation Waves ◽  
Transverse Detonation Waves

SPECIFIC IMPULSES FOR CONTINUOUS DETONATION OF METHANE/HYDROGEN-AIR MIXTURES

2020 ◽  
Author(s):  
F. A. BYKOVSKII ◽  
◽  
S. A. ZHDAN ◽  
E. F. VEDERNIKOV ◽  
◽  
...  
Keyword(s):  
Specific Impulse ◽  
Detonation Waves ◽  
Continuous Spin Detonation ◽  
Continuous Spin ◽  
Transverse Detonation Waves ◽  
Flow Type ◽  
Continuous Detonation ◽  
Multifront Detonation

Regimes of continuous spin detonation (CSD) with transverse detonation waves (TDWs) are obtained in a flow-type annular cylindrical combustor DK-500 for fuel-air mixtures (FAMs) with two compositions of the binary fuel CH4 + 8H2 and CH4 +4H2. Regimes of continuous multifront detonation (CMD) with colliding TDWs are obtained for the FAM with the CH4 + 2H2 binary fuel. These regimes are characterized by significant irregularity of the TDW structure and by a comparatively low TDW velocity. Specific impulses in continuous detonation are determined and analyzed for different compositions of the methane/hydrogen binary fuel. The maximum measured values of the specific impulse at the combustor exit are approximately 3800 s in CSD of CH4 + 8H2 and CH4 + 4H2, 3200 s in CMD of CH4 + 2H2, and 1600 s in combustion of CH4 + H2.

scholarly journals MHD effects in continuous spin detonation

2019 ◽  
Vol 484 (5) ◽  
pp. 550-553
Author(s):  
E. L. Popov ◽  
A. N. Samsonov ◽  
F. A. Bykovskii ◽  
E. F. Vedernikov
Keyword(s):  
Detonation Front ◽  
Specific Conductivity ◽  
Electrical Energy ◽  
Oxygen Mixture ◽  
Detonation Waves ◽  
Continuous Spin Detonation ◽  
Detonation Products ◽  
Continuous Spin ◽  
Energy Of Combustion ◽  
Transverse Detonation Waves

Conversion possibility of the chemical energy of combustion products of a hydrogen–oxygen mixture into electrical energy with the use of continuous spin detonation has been demonstrated for the first time in an MHD system. The specific conductivity of detonation products in the region of rotation of the detonation front was measured to be ~3 · 10–2 Ω–1 m–1. The structure of transverse detonation waves was examined, their velocity was measured (2220 ± 50 m/s), and the flow in their vicinity was studied.

Modeling Of Transverse Detonation Waves In A Flat-Radial Annular Channel

2017 ◽  
Vol 12 (2) ◽  
pp. 60-65
Author(s):  
Artem Trilis
Keyword(s):  
Boundary Surface ◽  
Annular Channel ◽  
Acoustic Properties ◽  
Detonation Waves ◽  
Acoustic Vibrations ◽  
Transverse Detonation Waves ◽  
Initial Stage ◽  
Different Temperatures ◽  
Circumferential Waves

Acoustic properties of two regions of gases with different temperatures arising at the initial stage of evolution of transverse detonation waves in annular channel were examined. Mechanics of acoustic vibrations and waves are studied using both numeric and analytical and methods. Rotating circumferential waves at boundary surface of two gases with different temperatures were discovered and rotation velocities of these waves were determined.

PARALLEL SOLVER FOR THE SIMULATIONS OF DETONATION WAVES ON UNSTRUCTURED GRIDS

2020 ◽  
Author(s):  
A. I. Lopato ◽  
◽  
A. G. Eremenko ◽  
Keyword(s):  
Chemical Kinetics ◽  
Numerical Scheme ◽  
Unstructured Grids ◽  
Numerical Study ◽  
Numerical Approach ◽  
Detonation Waves ◽  
Detailed Chemical Kinetics ◽  
Parallel Solver ◽  
Further Development ◽  
Detailed Chemical

Recently, we developed a numerical approach for the simulation of detonation waves on fully unstructured grids and applied it to the numerical study of the mechanisms of detonation initiation in multifocusing systems. Current work is devoted to further development of our numerical approach, namely, parallelization of the numerical scheme and introduction of more comprehensive detailed chemical kinetics scheme.

NUMERICAL STUDY OF DETONATION PROPAGATION IN VISCOUS TURBULENT FLOW IN A DUCT

2020 ◽  
Author(s):  
V. A. SABELNIKOV ◽  
◽  
V. V. VLASENKO ◽  
S. BAKHNE ◽  
S. S. MOLEV ◽  
...  
Keyword(s):  
Complex Geometry ◽  
Numerical Study ◽  
Navier Stokes ◽  
Detonation Waves ◽  
Detonation Propagation ◽  
Eddy Simulation ◽  
Detonation Structure ◽  
Classical Studies ◽  
Large Eddy ◽  
Physical Effects

Gasdynamics of detonation waves was widely studied within last hundred years - analytically, experimentally, and numerically. The majority of classical studies of the XX century were concentrated on inviscid aspects of detonation structure and propagation. There was a widespread opinion that detonation is such a fast phenomenon that viscous e¨ects should have insigni¦cant in§uence on its propagation. When the era of calculations based on the Reynolds-averaged Navier- Stokes (RANS) and large eddy simulation approaches came into effect, researchers pounced on practical problems with complex geometry and with the interaction of many physical effects. There is only a limited number of works studying the in§uence of viscosity on detonation propagation in supersonic §ows in ducts (i. e., in the presence of boundary layers).

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