Numerical investigation on the effect of injection pressure on the internal flow characteristics for diethyl ether, dimethyl ether and diesel fuel injectors using CFD

Vijayakumar, T.; Thundil, Karrupa Raj Rajagopal; Nanthagopal, K.

doi:10.2298/tsci100717091v

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…For these applications, the consequences of alcohol and ether addition are increasingly studied [15,16]. Cavitation is also likely to enhance spray atomization inside diesel injection nozzles [11,12].…”

Section: Hydrodynamic Cavitation Of Binary Mixtures and The Anomalousmentioning

confidence: 99%

Hydrodynamic Cavitation through “Labs on a Chip”: From Fundamentals to Applications

Ayela

Cherief

Colombet

et al. 2017

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Monitoring hydrodynamic cavitation of liquids through "labs on a chip" (i.e. microchannels with a shrinkage, such as microdiaphragms or microventuris) is an improvement in experimental approaches devoted to study the mechanisms involved in these multiphase flows. The small sizes of the reactors do not require big substructures. Flow rates of around 1 L/h make possible the characterisation of rare, toxic or expensive pure fluids or mixtures. Moreover, because of that microfluidic approach, an unique inception of the cavitation from a laminar flow regime is also possible, that provides precious databases for simulation or modelisation. Lastly, "labs on a chip" are an extremely versatile solution to perform novel experiments, as they are embeddable in tools basically designed to proceed with small samples (confocal microscopy, spectroscopy). We present here a summary of the former experiments performed by our team, concerning the fundamental aspects of hydrodynamic cavitation in a microchannel. We have recorded, with thermosensitive nanoparticles dispersed in water, the thermal signature of the growth and collapse of bubbles. We were also able to monitor the cavitation flow regime from a laminar single liquid phase. We are currently involved in applicative studies of hydrodynamic cavitation in microchannels, and preliminary results concerning liquid phase exfoliation of graphene will be also presented.Résumé -Cavitation hydrodynamique "sur puce" : Aspects fondamentaux et appliqués -L'émergence de la cavitation hydrodynamique 'sur puce' (cavitation dans des microcanaux comportant une réduction localisée de leur section de passage) est un atout pour l'étude des mécanismes impliqués dans ce type d'écoulements diphasiques. Les dimensions réduites des réacteurs s'affranchissent de l'utilisation d'infrastructures lourdes. Des débits de l'ordre du litre par heure rendent possible l'étude de fluides rares, toxiques ou coûteux, ainsi que l'étude de mélanges. De plus, cette approche microfluidique est la seule qui permet sous certaines conditions l'apparition de la cavitation à partir d'un régime d'écoulement laminaire, ce qui fournit des données expérimentales intéressantes pour la modélisation. Enfin, la dimension réduite des "laboratoires sur puce" leur permet de s'intégrer dans des schémas expérimentaux (microscopes confocaux, spectrométrie) inenvisageables à plus grande échelle. Nous présentons ici un récapitulatif de résultats récemment obtenus par notre équipe, concernant des aspects fondamentaux et appliqués au génie des procédés de la cavitation hydrodynamique sur puce. Nous avons pu détecter la signature thermique de l'évaporation et de la condensation de bulles, grâce à des nanoparticules thermofluorescentes dispersées dans l'écoulement. Nous avons également piloté la transition vers la cavitation à partir d'un écoulement laminaire. Nous présentons enfin les premiers résultats de nos travaux en cours, concernant l'exfoliation en phase liquide du graphène assistée par microcavitation.

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Section: Hydrodynamic Cavitation Of Binary Mixtures and The Anomalousmentioning

confidence: 99%

Hydrodynamic Cavitation through “Labs on a Chip”: From Fundamentals to Applications

Ayela

Cherief

Colombet

et al. 2017

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…The properties comparison of DEE and diesel fuel [21]is shown in Table 2. The engine was fuelled with blends of DEE and diesel.…”

Section: Testing Proceduresmentioning

confidence: 99%

Addressing Nox - Smoke Trade off in a Direction Injection Diesel Engine With Fuel Blends of Diethyl Ether and Diesel

Vijayakumar¹

2017

IJMPERD

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In this research work, an experimental investigation was carried out to study the combustion, performance and emission characteristics of a single cylinder water cooled diesel engine, when fueled with blends of diethyl ether and diesel. Three different blends with 5%, 10% and 15% of diethyl ether were tested and compared with neat diesel fuel at different load conditions. Fuel consumption, in-cylinder pressure and exhaust emissions were measured at all load conditions. When compared to neat diesel fuel, the blends of diethyl ether exhibited reduced carbon monoxide, nitrogen oxide and smoke emissions with increased hydrocarbon emissions. Lower brake specific energy consumption and increased brake thermal efficiency were observed for the blended fuels. The in-cylinder peak pressure and the heat release rate for blended fuels were lower compared to the diesel fuel. It was evident from the experimental results that 15% of diethyl ether blend has the potential of overcoming the existing NO x -smoke trade-off in diesel engines.

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“…Moreover, cavitation occurs inside Diesel injector nozzles, that can be used to improve spray atomization [16,17]. Mixtures of biofuels involving diethyl ether and ethanol have been also considered [18,19]. It is obvious that there is a need of experimental data about the cavitation flow characteristics of fluids such as mixtures of alcohols or ether.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic cavitation of binary liquid mixtures in laminar and turbulent flow regimes

Mossaz

Colombet

Ayela

2017

Experimental Thermal and Fluid Science

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Numerical investigation on the effect of injection pressure on the internal flow characteristics for diethyl ether, dimethyl ether and diesel fuel injectors using CFD

Cited by 9 publications

References 10 publications

Hydrodynamic Cavitation through “Labs on a Chip”: From Fundamentals to Applications

Hydrodynamic Cavitation through “Labs on a Chip”: From Fundamentals to Applications

Addressing Nox - Smoke Trade off in a Direction Injection Diesel Engine With Fuel Blends of Diethyl Ether and Diesel

Hydrodynamic cavitation of binary liquid mixtures in laminar and turbulent flow regimes

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