Salvador, F. J.; Martínez-López, J.; Romero, J.-V.; Roselló, M.-D. Study of the influence of the needle eccentricity on the internal flow in diesel injector nozzles by computational fluid dynamics calculations. (English) Zbl 1291.76220 Int. J. Comput. Math. 91, No. 1, 24-31 (2014). Summary: In the present paper, a computational study has been performed in order to clarify the effects of the needle eccentricity in a real multihole microsac nozzle. This nozzle has been simulated at typical operating conditions of a diesel engine, paying special attention to the internal flow development and cavitation appearance within the discharge orifices. For that purpose, a multiphase flow solver based on a homogeneous equilibrium model with a barotropic equation of state has been used, introducing the turbulence effects by Reynolds-averaged Navier-Stokes methods with a re-normalization group \(k-\varepsilon\) model. The results obtained from this investigation have demonstrated the huge influence of the needle position on the flow characteristics, showing important hole to hole differences. Cited in 1 Document MSC: 76M12 Finite volume methods applied to problems in fluid mechanics 76T99 Multiphase and multicomponent flows Keywords:diesel injector; cavitation; needle eccentricity; internal flow × Cite Format Result Cite Review PDF Full Text: DOI Link References: [1] DOI: 10.1016/S0894-1777(02)00179-6 · doi:10.1016/S0894-1777(02)00179-6 [2] DOI: 10.1243/095440705X28303 · doi:10.1243/095440705X28303 [3] DOI: 10.1016/j.fuel.2006.10.011 · doi:10.1016/j.fuel.2006.10.011 [4] DOI: 10.1016/0301-9322(95)00059-7 · Zbl 1134.76539 · doi:10.1016/0301-9322(95)00059-7 [5] F. P. Kärrholm, H. Weller, N. Nordin, Modelling injector flow including cavitation effects for diesel applications. Proceedings of FEDSM, 5th Joint ASME/JSME Fluids Engineering Conference, San Diego, California, July 30–August 2 2007 [6] DOI: 10.1243/14680874JER00806 · doi:10.1243/14680874JER00806 [7] T. Oda, M. Hiratsuka, Y. Goda, S. Kanaike, and K. Ohsawa,Experimental and numerical investigation about internal cavitating flow and primary atomization of a large-scaled vco diesel injector with eccentric needle. ILASS-Europe 2010, 23rd Annual Conference on Liquid Atomization and Spray Systems, Brno, Czech Republic, September 2010. [8] DOI: 10.1021/ef900068a · doi:10.1021/ef900068a [9] DOI: 10.1016/j.fuel.2004.10.009 · doi:10.1016/j.fuel.2004.10.009 [10] DOI: 10.1016/j.compfluid.2012.01.005 · doi:10.1016/j.compfluid.2012.01.005 [11] DOI: 10.1016/j.applthermaleng.2008.10.009 · doi:10.1016/j.applthermaleng.2008.10.009 [12] DOI: 10.1016/j.enconman.2011.10.004 · doi:10.1016/j.enconman.2011.10.004 [13] DOI: 10.1016/j.enconman.2011.10.007 · doi:10.1016/j.enconman.2011.10.007 [14] DOI: 10.1016/0021-9991(92)90307-K · Zbl 0758.76047 · doi:10.1016/0021-9991(92)90307-K This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.