Stabilization of detonation combustion in a high-velocity flow of a hydrogen-oxygen mixture

Tunik, Yu. V.

doi:10.1134/s0015462808060161

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…The complete description of the procedure of numerically integrating the equations of the dynamics of a reacting gas mixture is presented in [7].…”

Section: Fluid Dynamicsmentioning

confidence: 99%

Detonation combustion of hydrogen in a convergent-divergent nozzle with a central coaxial cylinder

Tunik

2014

Fluid Dyn

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The feasibility of steady detonation combustion of a hydrogen-air mixture entering at a supersonic velocity in an axisymmetric convergent-divergent nozzle with a central coaxial cylinder is considered. The problem of the nozzle starting and the initiation of detonation combustion is numerically solved with account for the interaction of the outflowing gas with the external supersonic flow. The modeling is based on the gasdynamic Euler equations for an axisymmetric flow. The calculations are carried out using the Godunov scheme on a fine fixed grid which allows one to study in detail the interaction of an oblique shock wave formed in the diffuser with the nozzle axis. It is shown that a central coaxial cylinder ensures the starting with the formation of supersonic flow throughout the entire nozzle and stable detonation combustion of a stoichiometric hydrogen-air mixture in the divergent section of the nozzle.

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“…The complete description of the procedure of numerically integrating the equations of the dynamics of a reacting gas mixture is presented in [7].…”

Section: Fluid Dynamicsmentioning

confidence: 99%

Detonation combustion of hydrogen in a convergent-divergent nozzle with a central coaxial cylinder

Tunik

2014

Fluid Dyn

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“…Данная работа продолжает исследования по стабилизации детонационного горения водородовоздушных смесей, поступающих в осесимметричные конвергентно-дивергентные сопла с высокой сверхзвуковой скоростью. Ранее в [4][5][6][7][8] численно установлена возможность генерации тяги в результате стабильного детонационного горения водорода в одном и том же сопле на высотах до 16 км при числе Маха набегающего воздушного потока от 7 до 9. На высотах более 20 это сопло не обеспечивает формирование стационарной детонации даже при наличии коаксиального центрального тела «цилиндр-конус».…”

Section: Introductionunclassified

Numerical simulation of hydrogen detonative combustion in a convergent-divergent nozzle with a central body

Tunik¹

2019

PhChGD

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The work continues research on stabilization of detonation combustion of hydrogen-air mixtures entering axisymmetric convergent-divergent nozzles with high supersonic speed. The possibility of thrust generation under atmospheric conditions at heights of up to 30 km is numerically studied. Hydrogen-air mixture flow modeling is carried out on the basis of non-stationary twodimensional equations of an inviscid multi-component gas with chemical transformations. Calculations are performed on the basis of S.K. Godunov is of the first order of accuracy, as well as its modification, which increases the approximation order of smooth solutions to the second in spatial variables. It is shown the possibility of stable detonative combustion of hydrogen-air mixtures at altitudes up to 30 km (see figure below) at Mach number of oncoming flow of 7 up to 9. The configuration of suitable axisymmetric convergent-divergent nozzle and a central coaxial body is determined.

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Control of detonation combustion of rarefied hydrogen-air mixture in a laval nozzle

Tunik

2018

International Journal of Hydrogen Energy

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Stabilization of detonation combustion in a high-velocity flow of a hydrogen-oxygen mixture

Cited by 6 publications

References 2 publications

Detonation combustion of hydrogen in a convergent-divergent nozzle with a central coaxial cylinder

Detonation combustion of hydrogen in a convergent-divergent nozzle with a central coaxial cylinder

Numerical simulation of hydrogen detonative combustion in a convergent-divergent nozzle with a central body

Control of detonation combustion of rarefied hydrogen-air mixture in a laval nozzle

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