Deliverables
Compressible LES simulations representative of transonic Diesel liquid jets will be initially assessed.
DNS will be used to analyse the chain impact of hydrocarbon fuel droplets on flat surfaces under conditions reflecting the range of Weber and capillary numbers realised in combustion engines. The frequency of impact and the film thickness forming on the surface will be considered as additional variables.
The DNS data of ESR5 will be used for developing a SGS model for bubble-collapse induced atomisation.
The model will be further modified in order to include all the needed properties of such cryogenic fluids. Simulations will be performed and validated against DLR’s experimental data
The dynamics of droplet clusters consisting from pre-defined arrangements of spherical droplets and non-spherical droplets and ligaments will be simulated using DNS. Simulations will be performed for a range of clusters having as variables the number of droplets, their proximity and shape.
Cavitation volume fraction on the same nozzle using mCT. The simulation projects will be using the validated computational in-nozzle flow model for predicting realistic conditions of liquid, gas and vapour compositions realised during the transient operation of injectors.
Measurements for different cavitating nozzles will be utilised and a cavitation-induced diesel-atomisation SGS model suitable for implementation to LES models will be developed.
3D high speed imaging of the cavitation cloud development inside a cavitating orifice.
A previously developed DNS method will be validated and used for predicting the primary breakup of the liquid jet atomization
Simulations of cases providing statistically adequate number of data will be performed for developing a relevant SGS model describing the macroscopic impingement outcome in a form suitable for implementation the LES model.
A production Diesel injector modified to incorporate a transparent nozzle will be tested. Injection conditions will be adjusted to perform high frequency imaging using ultra-short light pulses. Ballistic imaging data for the liquid core breakup near the nozzle hole exit and their velocities using Laser Correlation Velocimetry will be obtained; mean and standard deviation values will be reported.
Model validation against measurements from the literature on Diesel sprays, as well as those to be obtained from ESR3.
Cavitation measurements for different fuels, nuclei and dissolved gases of interest to Delphi Diesel FIE.
The ballistic imaging technique will be utilised in order to develop a SGS model for the liquid breakup.
Simulation of flow inside nozzles utilised with oil burners in order to obtain boundary conditions for the subsequent spray simulations
Comparison of their performance to the existing ones for operating conditions relevant to aero-engines.
The developed model will be compared against the LES of ESR11 for Diesel sprays.
The SGS model of ESR6 that considers as variables the nucleation and subsequent bubble growth for cryogenic fluids will be implemented into the common LES Σ-Υ/PDF model. Following, predictions of flash-boiling related phenomena will be implemented on the aforementioned SGS model
Simulation of parametric cases for providing adequate data required for the derivation of a relevant SGS model.
implementation of the PDF-LES approach that considers all flow processes in the compressible context of OpenFOAM. This will also include to the framework SGS models for ligament detachment and droplet break up and collision from ESR8 and ESR9.
Experimental results for flow conditions relevant to Delphi Diesel injectors will be also considered.
The model of [56] accounting for the liquid-gas flow at the exit of the injector and predicting the liquid volume fraction and surface area will be validated against the experimental data of ESR2 and ESR3.
Existing one dimensional turbulence (ODT) SGS models will be modified to capture turbulence effect on gas-liquid interfaces which will consider the experimental results of ESR1 and will be implemented to OpenFOAM PDF-LES approach of ESR11
Characterisation of liquid breakup in the near nozzle region of a jet in which well-defined bubbles are introduced. The size, location and number of bubbles will be controlled via hypodermic needles. Reynolds and Weber numbers will be controlled independently by using different fluids. Nozzle flow rate will be kept at nominal steady-state conditions in an effort to minimise or eliminate the influence of pressure and flow rate variations on atomisation.
The moment of fluid (MOF) method will be developed in the in-house code ARCHER (CLSVOF) as the interface reconstruction in MOF method is carried out with second order accuracy. Comparison of results from the simulations that uses MOF and/or CLSVOF methods will be used as validation
DNS validation for the fragmentation of a liquid jet injected from an orifice-type nozzle induced from the collapse of individual cavitation or gas bubbles or streams of bubbles present in the liquid. Experimental data to be used are those reported in [143] as well as those to be obtained by ESR2.
LES of spray development in oil burners.
A SGS model suitable for implementation to the holistic LES model will be proposed for Weber and Reynolds numbers referring to conditions representative of the industrial applications considered in this proposal.
Simulation results considering bubble structures present inside Diesel injectors during the sac volume filling process.
Experimental results for transient needle valve effects of interest to Delphi Diesel injectors.
Project website is developed and made public.
SGS model application to MHPS oil burners.
Publications
Author(s): Aqeel Ahmed, Javier Anez, Stefano Puggelli, Julien Reveillon, Jorge César Brändle de Motta, François-Xavier Demoulin
Published in: Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems, 2017
DOI: 10.4995/ILASS2017.2017.4694
Author(s): Dionisis Stefanitsis, Ilias Malgarinos, George Strotos, Nikolaos Nikolopoulos, Emmanouil Kakaras, Manolis Gavaises
Published in: Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems, 2017
DOI: 10.4995/ILASS2017.2017.4690
Author(s): Giovanni Tretola, Konstantina Vogiatzaki, Salvador Navarro-Martinez
Published in: Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems, 2017
DOI: 10.4995/ILASS2017.2017.4712
Author(s): Stavros Rafail Fostiropoulos, Ilias Malgarinos, George Strotos, Nikolaos Nikolopoulos, Emmanouil Kakaras, Phoevos Koukouvinis, Manolis Gavaises
Published in: Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems, 2017
DOI: 10.4995/ILASS2017.2017.4691
Author(s): Asuri Mukundan , Anirudh; Menard , T.; Berlemont , A.; Brändle De Motta , Jorge César
Published in: ICLASS, 14th Triennial International Conference on Liquid Atomization and Spray Systems, Issue 1, 2018
Author(s): Junmei Shi, Pablo Aguado Lopez, Eduardo Gomez Santos, Noureddine Guerrassi, Gavin Dober, Wolfgang Bauer, Ming-Chia Lai, Jin Wang
Published in: Proceedings ILASS–Europe 2017. 28th Conference on Liquid Atomization and Spray Systems, 2017
DOI: 10.4995/ILASS2017.2017.5707
Author(s): Jiayi Zhou; Matts Andersson
Published in: ICLASS, 14th Triennial International Conference on Liquid Atomization and Spray Systems, 2018
Author(s): Anirudh Asuri Mukundan; Thibaut Ménard; Alain Berlemont; Jorge César Brändle de Motta;
Published in: Proceedings 10th International Conference on Computational Fluid Dynamics (ICCFD10), 2018
Author(s): Jean-Bernard Blaisot; Fakhry Abuzahra; Akira Sou; Christophe Dumouchel;
Published in: Proceedings ILASS2019, ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems,, 2019
Author(s): Asuri Mukundan, Anirudh; Ménard, Thibaut; BERLEMONT, Alain; Brändle De Motta, Jorge César,
Published in: Proceedings ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, Issue 1, 2019
Author(s): Asuri Mukundan, Anirudh; Ménard, Thibaut; BERLEMONT, Alain; Brändle De Motta, Jorge César,
Published in: Proceedings ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, Issue 3, 2019
Author(s): N. Bempedelis; Y. Ventikos;
Published in: Proceedings of the 10th International Symposium on Cavitation (CAV2018), 2018, Page(s) 819-822
DOI: 10.1115/1.861851_ch156
Author(s): Loureiro, Daniel Dias; Reutzsch, Jonathan; Dietzel, Dirk; Kronenburg, Andreas; Weigand, Bernhard; Vogiatzaki, Konstantina
Published in: Proceedings 14th International Conference on Liquid Atomization and Spray System, Issue 1, 2018
DOI: 10.18419/opus-10342
Author(s): Asuri Mukundan, Anirudh; Ménard, Thibaut; Berlemont, A.; Brändle De Motta, Jorge César,; Herrmann, Marcus
Published in: Proceedings ILASS-Americas 30th Annual Conference on Liquid Atomization and Spray Systems, Issue 3, 2019
Author(s): Loureiro, Daniel Dias; Reutzsch, Jonathan; Kronenburg, Andreas; Weigand, Bernhard; Vogiatzaki, Konstantina
Published in: Proceedings 10th International Conference on Multiphase Flow, Issue 1, 2019
DOI: 10.18419/opus-10488
Author(s): Asuri Mukundan, Anirudh; Menard, Thibaut; BERLEMONT, Alain; Brändle De Motta, Jorge César
Published in: Proceedings 11th US National Combustion Meeting, Issue 1, 2019
Author(s): D. Stefanitsis, G. Strotos, N. Nikolopoulos, E. Kakaras, M. Gavaises
Published in: Proceedings 14th International Conference on Liquid Atomization and Spray Systems, 2018
Author(s): Georgia Nykteri, Phoevos Koukouvini, Silvestre Roberto Gonzalez Avila, Claus-Dieter Ohl, Manolis Gavaises
Published in: Proceedings ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, 2019
Author(s): G. Nykteri, P. koukouvinis, M. Gavaises
Published in: Proceedings 14th International Conference on Liquid Atomization and Spray Systems, 2018
Author(s): Eduardo Gomez Santos, Junmei Shi, Wolfgang Bauer, Manolis Gavaises
Published in: Proceedings Fuel Systems Engines IMECHE, 2018
Author(s): Junmei Shi1, Pablo Aguado Lopez, Eduardo Gomez Santos, Noureddine Guerrassi, Wolfgang Bauer, Ming-Chia Lai, Jin Wang
Published in: Proceedings 14th International Conference on Liquid Atomization and Spray Systems., 2018
Author(s): Marco Fistler, David O. Lignell, Alan Kerstein, Michael Oevermann
Published in: Proceedings ILASS-Americas 29th Annual Conference on Liquid Atomization and Spray Systems, 2017
Author(s): Marco Fistler, David O. Lignell, Alan Kerstein, Michael Oevermann
Published in: Proceedings ILASS2017. 28th European Conference on Liquid Atomization and Spray Systems, 2017
Author(s): Theodoros Lyras, Ioannis K. Karathanassis, Phoevos Koukouvinis, Manolis Gavaises
Published in: Proceedings ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, 2019
Author(s): Y. H. Nazeer, M. Ehmann, M. Agraniotis, F. Koukouvinis, M. Gavaises
Published in: Proceedings 14th Triennial International Conference on Liquid Atomization and Spray System, 2018
Author(s): Marco Fistler, Alan Kerstein, Michael Oevermann
Published in: Proceedings Triennial International Conference on Liquid Atomization and Spray Systems, 2018
Author(s): A. Asuri Mukundan,
T. Menard,
A. Berlemont,
J. C. Brandle de Motta,
R. Eggels
Published in: ILASS-Americas 30th Annual Conference on Liquid Atomization and Spray Systems,, 2019
Author(s): Dionisis Stefanitsis, Ilias Malgarinos, George Strotos, Nikolaos Nikolopoulos, Emmanouil Kakaras, Manolis Gavaises
Published in: International Journal of Heat and Fluid Flow, Issue 68, 2017, Page(s) 203-215, ISSN 0142-727X
DOI: 10.1016/j.ijheatfluidflow.2017.10.012
Author(s): Dionisis Stefanitsis, Ilias Malgarinos, George Strotos, Nikolaos Nikolopoulos, Emmanouil Kakaras, Manolis Gavaises
Published in: International Journal of Multiphase Flow, Issue 113, 2019, Page(s) 289-303, ISSN 0301-9322
DOI: 10.1016/j.ijmultiphaseflow.2018.10.015
Author(s): Junmei Shi, Eduardo Gomez Santos, Guy Hoffmann, Gavin Dober
Published in: MTZ worldwide, Issue 79/10, 2018, Page(s) 58-63, ISSN 2192-9114
DOI: 10.1007/s38313-018-0089-2
Author(s): Eduardo Gomez Santos, Junmei Shi, Manolis Gavaises, Celia Soteriou, Mark Winterbourn, Wolfgang Bauer
Published in: Fuel, 2019, Page(s) 116746, ISSN 0016-2361
DOI: 10.1016/j.fuel.2019.116746
Author(s): Yasir Hayat Nazeer, M. Ehmann, P. Koukouvinis, Manolis Gavaises
Published in: Atomization and Sprays, Issue 29/5, 2019, Page(s) 403-428, ISSN 1044-5110
DOI: 10.1615/atomizspr.2019030944
Author(s): J. Anez, A. Ahmed, N. Hecht, B. Duret, J. Reveillon, F.X. Demoulin
Published in: International Journal of Multiphase Flow, Issue 113, 2019, Page(s) 325-342, ISSN 0301-9322
DOI: 10.1016/j.ijmultiphaseflow.2018.10.009
Author(s): Christophe Dumouchel, Jean-Bernard Blaisot, Fakhry Abuzahra, Akira Sou, Gilles Godard, Said Idlahcen
Published in: Experiments in Fluids, Issue 60/8, 2019, ISSN 0723-4864
DOI: 10.1007/s00348-019-2780-8
Author(s): Dionisis Stefanitsis, George Strotos, Nikolaos Nikolopoulos, Emmanouil Kakaras, Manolis Gavaises
Published in: International Journal of Heat and Fluid Flow, Issue 76, 2019, Page(s) 274-286, ISSN 0142-727X
DOI: 10.1016/j.ijheatfluidflow.2019.02.010
Author(s): Salvador Navarro-Martinez, Giovanni Tretola, Mohammad Reza Yosri, Robert L Gordon, Konstantina Vogiatzaki
Published in: International Journal of Engine Research, 2019, Page(s) 146808741988944, ISSN 1468-0874
DOI: 10.1177/1468087419889449
Author(s): Anirudh Asuri Mukundan, Thibaut Ménard, Jorge César Brändle de Motta, Alain Berlemont
Published in: Computers & Fluids, Issue 198, 2020, Page(s) 104364, ISSN 0045-7930
DOI: 10.1016/j.compfluid.2019.104364
Author(s): Dionisis Stefanitsis, George Strotos, Nikolaos Nikolopoulos, Manolis Gavaises
Published in: International Journal of Multiphase Flow, Issue 121, 2019, Page(s) 103123, ISSN 0301-9322
DOI: 10.1016/j.ijmultiphaseflow.2019.103123
Author(s): Nikolaos Bempedelis, Yiannis Ventikos
Published in: Journal of Computational Physics, 2019, Page(s) 109129, ISSN 0021-9991
DOI: 10.1016/j.jcp.2019.109129
Author(s): Aqeel Ahmend
Published in: 2019
Author(s): Fakhry Abuzahra
Published in: 2019