Hot-fire testing of liquid oxygen/hydrogen single coaxial injector at high-pressure conditions with optical diagnostics

Suslov, Dmitry; Hardi, Justin; Knapp, Bernhard; Oschwald, Michael

doi:10.1051/eucass/201911391

Cited by 4 publications

(10 citation statements)

References 7 publications

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“…The model shows a good agreement with the experimental data by Suslov et al (2015). The simulation is complicated by the presence of a massive film cooling and by an uncertainty in the wall heat flux, which was not measured in the experiment.…”

Section: Single Coaxial Injector Combustion Chambersupporting

confidence: 60%

“…The third test case simulated here was obtained at test facility P8 at the German Aerospace Center (DLR-Lampoldshausen). The test case was presented on conferences by Suslov et al (2015Suslov et al ( , 2016), and it was already simulated by Seidl et al (2017) and by Fechter et al (2017). Although the combustion chamber has only one coaxial injector, this test case is not easier for CFD modeling than the previous one.…”

Section: Single Coaxial Injector Combustion Chambermentioning

confidence: 99%

“…The inner diameter of the presented subscale combustion chamber is 50 mm. The detailed descriptions of the combustion chamber can be found in the original works by Suslov et al (2015Suslov et al ( , 2016 and by Mayer et al (2001).…”

Section: Single Coaxial Injector Combustion Chambermentioning

confidence: 99%

See 2 more Smart Citations

Extended Eddy-Dissipation Model for Modeling Hydrogen Rocket Combustors

Жуков

2019

Combustion Science and Technology

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In the work, an extension of the eddy-dissipation model (EDM) is developed to simulate turbulent combustion of hydrogen in undiluted oxygen in rocket combustion chambers. The modification of the eddy-dissipation model allows eliminating of main demerits of the original EDM model. This is achieved by introducing additional parameters into the model, which limit the reaction rate and depend on the local stoichiometry and temperature. The main such parameter is "Maximum flame temperature," which depends on local stoichiometry and takes into account the dissociation of combustion products. The extension of the EDM model is based on the framework provided by ANSYS CFX. The new turbulent combustion model is validated against experimental data from three different subscale rocket combustors. The validation of the model is carried out against data on pressure and wall heat flux, which are the main targets of simulations of rocket combustion chambers. ARTICLE HISTORY

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Section: Single Coaxial Injector Combustion Chambersupporting

confidence: 60%

Section: Single Coaxial Injector Combustion Chambermentioning

confidence: 99%

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Extended Eddy-Dissipation Model for Modeling Hydrogen Rocket Combustors

Жуков

2019

Combustion Science and Technology

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“…The third test case is a round model rocket combustor termed "BKC" with a single element shear coaxial injector operated by DLR in Lampoldshausen at about 60 bar [54,55]. Again, propellants are H 2 and O 2 .…”

Section: Literature Studymentioning

confidence: 99%

CFD simulations of turbulent nonreacting and reacting flows for rocket engine applications

Seidl

Aigner

Keller

et al. 2017

The Journal of Supercritical Fluids

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A consistent real gas framework based on a preconditioning scheme is implemented into the CFD code TASCOM3D to simulate nonreacting and reacting turbulent flows with transcritical injection. All thermodynamic properties and partial derivatives are rigorously evaluated from the reduced residual Helmholtz energy by use of fundamental thermodynamic relations. The Soave-Redlich-Kwong equation of state with an optional volume translation is employed in combination with highpressure models for the calculation of fluid transport properties. Three test cases are simulated to validate the implemented real gas framework using different turbulence modeling strategies. A good match between numerical and experimental data is obtained.

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“…More detailed information about the work conducted within this subproject is presented in [67]. Lists of the relevant literature and surveys in relation to these green advanced rocket propellants or references to surveys are given in [67][68][69][70][71][72][73][74][75].…”

mentioning

confidence: 99%

Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

et al. 2019

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The Future Fuels project combines research in several institutes of the German Aerospace Center (DLR) on the production and use of synthetic fuels for space, energy, transportation, and aviation. This article gives an overview of the research questions considered and results achieved so far and also provides insight into the multidimensional and interdisciplinary project approach. Various methods and models were used which are embedded in the research context and based on established approaches. The prospects for large-scale fuel production using renewable electricity and solar radiation played a key role in the project. Empirical and model-based investigations of the technological and cost-related aspects were supplemented by modelling of the integration into a future electricity system. The composition, properties, and the related performance and emissions of synthetic fuels play an important role both for potential oxygenated drop-in fuels in road transport and for the design and certification of alternative aviation fuels. In addition, possible green synthetic fuels as an alternative to highly toxic hydrazine were investigated with different tools and experiments using combustion chambers. The results provide new answers to many research questions. The experiences with the interdisciplinary approach of Future Fuels are relevant for the further development of research topics and co-operations in this field.Synthetic fuels based on renewable energies (RE) are widely seen as a key element to achieving climate-neutral transport (e.g., [1,2]). As liquid hydrocarbons have a high energy and power density, they are primarily discussed as fuels for (heavy) road vehicles, ships, and aircraft. Due to their low storage and transport losses, they are also conceivable as a complementary long-term electricity storage option [3]. The challenges of producing and implementing these fuels are manifold. Chemical processes and renewable electrical or thermal energy can be used to produce liquid hydrocarbons from various carbon sources and hydrogen (and sometimes oxygen). Synthetic fuels have several advantages: they can be easily integrated into our existing energy and mobility infrastructures, can be used in all areas of the transport sector, and they can be optimized with regard to their chemical properties. The main disadvantages are the high energy losses and production costs.In this research context, eleven research groups at the German Aerospace Center (DLR) are working together on the Future Fuels project on synthetic fuels. The aim of the interdisciplinary approach is to realize synergies and joint research activities, as well as new research impulses through different perspectives. The scientists and engineers are investigating how synthetic fuels can be produced using solar energy and electrolysis processes (Solar Fuels), and are developing concepts for the re-conversion of these fuels into electricity. They are working on emission-optimized fuels for transport and aviation (Designer Fuels), as well as advanced space ap...

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Hot-fire testing of liquid oxygen/hydrogen single coaxial injector at high-pressure conditions with optical diagnostics

Cited by 4 publications

References 7 publications

Extended Eddy-Dissipation Model for Modeling Hydrogen Rocket Combustors

Extended Eddy-Dissipation Model for Modeling Hydrogen Rocket Combustors

CFD simulations of turbulent nonreacting and reacting flows for rocket engine applications

Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

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