000147787 001__ 147787
000147787 005__ 20250103153614.0
000147787 0247_ $$2doi$$a10.1016/j.ijmultiphaseflow.2022.104039
000147787 0248_ $$2sideral$$a141254
000147787 037__ $$aART-2022-141254
000147787 041__ $$aeng
000147787 100__ $$aTretola, Giovanni
000147787 245__ $$aPrimary break-up characterisation and droplet statistics of multi-hole sprays using a probabilistic surface density methodology
000147787 260__ $$c2022
000147787 5203_ $$aThe work provides novel physical insight into the complex near-field flow dynamics and the primary break-up characteristics of sprays injected through multi-hole injectors (gasoline ECN Spray G). We use a stochastic fields transported-PDF method ( --PDF ) that allows for more accurate modelling of the sub-grid dynamics. Within this framework, the joint sub-grid probability density function of the liquid volume and surface density is solved using stochastic methods. Initially, the predicted spray dynamics resulting from the primary atomisation are simulated in terms of droplet size, velocity and spray angle. The spray from each hole is then investigated individually. The distribution of liquid near the nozzles agrees very well to the available experimental measurements. It is found that the spray break-up process in these gasoline sprays produces a quasi-lognormal droplet distribution. Such normalised distributions can be used to feed Eulerian–Lagrangian approach, showing a great potential to represent the full spray combustion process coupling the two approaches. Moreover, comparing the statistical and radial distributions of the droplets, we observe that the core of the plumes are characterised by larger droplets (≥10 μm), although the overall spray is represented by lower size droplets surrounding the plume centre (≤10 μm). Finally, the paper shows that the geometry asymmetry has a considerable effect on the flow field, which in turn affects the droplet behaviour. Even if the average droplet size was not affected by the asymmetry, the droplet velocity presented significant variation ( ≈ 50% ) for some of the holes.
000147787 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000147787 590__ $$a3.8$$b2022
000147787 591__ $$aMECHANICS$$b36 / 137 = 0.263$$c2022$$dQ2$$eT1
000147787 592__ $$a0.985$$b2022
000147787 593__ $$aFluid Flow and Transfer Processes$$c2022$$dQ1
000147787 593__ $$aPhysics and Astronomy (miscellaneous)$$c2022$$dQ1
000147787 593__ $$aMechanical Engineering$$c2022$$dQ1
000147787 594__ $$a7.0$$b2022
000147787 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/submittedVersion
000147787 700__ $$0(orcid)0000-0001-8342-6573$$aNavarro-Martinez, Salvador
000147787 700__ $$aVogiatzaki, Konstantina
000147787 773__ $$g152 (2022), 104039 [13 pp.]$$pInt. j. multiph. flow$$tINTERNATIONAL JOURNAL OF MULTIPHASE FLOW$$x0301-9322
000147787 8564_ $$s16114083$$uhttps://zaguan.unizar.es/record/147787/files/texto_completo.pdf$$yPreprint
000147787 8564_ $$s1233544$$uhttps://zaguan.unizar.es/record/147787/files/texto_completo.jpg?subformat=icon$$xicon$$yPreprint
000147787 909CO $$ooai:zaguan.unizar.es:147787$$particulos$$pdriver
000147787 951__ $$a2025-01-03-13:21:31
000147787 980__ $$aARTICLE