Numerical Investigation of Detonation Combustion Wave in Pulse Detonation Combustor with Ejector

Debnath, Pinku; Pandey, Krishna Murari

doi:10.18869/acadpub.jafm.73.239.27266

Cited by 21 publications

(14 citation statements)

References 15 publications

(15 reference statements)

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“…Through this procedure, extra terms known as the Reynolds stresses appear in the equations for which additional information must be provided. To close this system of equations, transport equations for the turbulent kinetic energy and its dissipation rate are employed (the so-called k- model) [17,18].…”

Section: Numerical Proceduresmentioning

confidence: 99%

Numerical Simulation of a Pulsating Flow Generated in an Ejector

Vekteris

Styra

Mokšin

et al. 2018

TFAMENA

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SummaryThis paper presents a numerical simulation of a pulsating flow generated inside an ejector; the flow is intended to oxidize ferrous iron (Fe 2+ ) dissolved in drinking water to ferric iron (Fe 3+ ). The pulsating flow ejector can be used in water treatment systems where the water is saturated with oxygen before being treated by filters. It is shown that the pulsating flow is generated due to fluctuations in the pressure, density, and velocity of the flow inside the ejector. It is established that the flow pressure inside the ejector varies from 0.513 to 0.0719 MPa, the flow density varies from 4.64 to 0.66 kg/m 3 , and the flow velocity varies from 0 to 590 m/s. Numerical simulation results have shown that an acoustic field is generated inside the ejector during the mixing of air with water, which accelerates the coagulation of iron particles. The obtained sound power level value of 100 dB shows that the pulsating flow ejector can be used for non-reagent water treatment.

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Section: Numerical Proceduresmentioning

confidence: 99%

Numerical Simulation of a Pulsating Flow Generated in an Ejector

Vekteris

Styra

Mokšin

et al. 2018

TFAMENA

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“…18 Rankin et al. 19 and Debnath and Pandey 20 investigated the structure of detonation combustion wave and numerical simulation methods.…”

Section: Introductionmentioning

confidence: 99%

Structural response and wall thickness design of pulse detonation combustor

She

Zheng

Wang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper deals with the structural response and wall thickness design of pulse detonation combustor. The pulse detonation combustor is a chamber with cylindrical shell structure, which is loaded with internal moving detonation pressure and thermal load. Much higher strain and stress can be excited under moving pressure load than static load. How to choose the attenuation coefficient during detonation pressure were discussed. The results of structural response simulation based on finite element method were compared with analytical result in the literature. The multi-cycle detonation pressure load and thermal load were measured on a pulse detonation engine principle prototype initialed through deflagration-to-detonation transition for the first time. The structural response characteristics of the detonation chamber were studied based on the measured load under different working frequencies. A series of comparison between numerical simulation and experimental measurement were carried out. The wall thickness of the chamber was designed based on the fatigue load spectrum under real detonation load and the chamber’s target fatigue life. Special attention was paid to the mutual influence between the dynamic amplification factor and the wall thickness.

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“…Scientific references indicate the PDE classification by design type: pure (PDE with / without pre-dielectric, with / without ejector, single tube PDE, multi-tube PDE, PDE-turbojet PDE-rocket) of the fuel used [11,12].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and performances evaluation of the pulse detonation engine

et al. 2018

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A pulse detonation engine (PDE) is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. The engine is pulsed because the mixture must be renewed in the combustor between each detonation wave. Theoretically, a PDE can operate from subsonic up to hypersonic flight speed. Pulsed detonation engines offer many advantages over conventional propulsion systems and are regarded as potential replacements for air breathing and rocket propulsion systems, for platforms ranging from subsonic unmanned vehicles, long range transports, high-speed vehicles, space launchers to space vehicles. The article highlights elements of the current state of the art, but also theoretical and numerical aspects of these types of unconventional engines. This paper presents a numerical simulation of a PDE at h=10000 m with methane as working fluid for stoichiometric combustion, in order to find out the detonation conditions.

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Numerical Investigation of Detonation Combustion Wave in Pulse Detonation Combustor with Ejector

Cited by 21 publications

References 15 publications

Numerical Simulation of a Pulsating Flow Generated in an Ejector

Numerical Simulation of a Pulsating Flow Generated in an Ejector

Structural response and wall thickness design of pulse detonation combustor

Numerical simulation and performances evaluation of the pulse detonation engine

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