Josep Gomez-Soriano

Experimental analysis of cyclical dispersion in CI vs. SI engines and its significance for combustion noise numerical modelling

European Regional Development Fund (Dotacion de infraestructuras cientifico tecnicas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte, CiMeT) (FEDER-ICTS-2012-06). n nPrograma de Apoyo para la Investigacion y Desarrollo (PAID) Universitat Politecnica de Valencia (FPI-S2-2016-1353).

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

The equipment used in this work was partially supported by nFEDER and the Spanish Government through grant no. nDPI2015-70464-R and by FEDER project funds “Dotacion de ninfraestructuras cientifico tecnicas para el Centro Integral nde Mejora Energetica y Medioambiental de Sistemas de nTransporte (CiMeT), (FEDER-ICTS-2012-06)”, framed in the noperational program of unique scientific and technical infrastructure nof the Spanish Ministerio de Economia y nCompetitividad. J. Gomez-Soriano was partially supported nthrough contract FPI-S2-2016-1353 of the “Programa de nApoyo para la Investigacion y Desarrollo (PAID-01-16)” of nUniversitat Politecnica de Valencia. nThe submitted manuscript was created partly by nUChicago Argonne, LLC, Operator of Argonne National nLaboratory. Argonne, a U.S. Department of Energy Office of nScience laboratory, is operated under Contract No. DE-AC02- n06CH11357. This research was partly funded by U.S. DOE nOffice of Vehicle Technologies, Office of Energy Efficiency nand Renewable Energy under Contract No. DE-AC02- n06CH11357. The authors wish to thank Gurpreet Singh and nLeo Breton, program managers at DOE, for their support. nThe authors would also like to express their gratitude to nCONVERGENT SCIENCE Inc. and Convergent Science nGmbH for their kind support for performing the CFD calculations nusing CONVERGE software.

Development of a Virtual CFR Engine Model for Knocking Combustion Analysis

The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (Argonne). Argonne, a U.S. Department of Energy (DOE) Office of Science laboratory, is operated under Contract No. DEAC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in the said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. This research was partially funded by DOEs Office of Vehicle Technologies and Office of Energy Efficiency and Renewable Energy (EERE) under Contract No. DE-AC02-06CH11357. The authors wish to thank Gurpreet Singh, Kevin Stork, and Leo Breton, program managers at DOE, for their support. This research was conducted as part of the Co-Optimization of Fuels and Engines (Co-Optima) project sponsored by the U.S. DOE Office of EERE, Bioenergy Technologies and Vehicle Technologies Offices

Understanding the unsteady pressure field inside combustion chambers of compression-ignited engines using a computational fluid dynamics approach

In this article, a numerical methodology for assessing combustion noise in compression ignition engines is described with the specific purpose of analysing the unsteady pressure field inside the combustion chamber. The numerical results show consistent agreement with experimental measurements in both the time and frequency domains. Nonetheless, an exhaustive analysis of the calculation convergence is needed to guarantee an independent solution. These results contribute to the understanding of in-cylinder unsteady processes, especially of those related to combustion chamber resonances, and their effects on the radiated noise levels. The method was applied to different combustion system configurations by modifying the spray angle of the injector, evidencing that controlling the ignition location through this design parameter, it is possible to decrease the combustion noise by minimizing the resonance contribution. Important efficiency losses were, however, observed due to the injector/bowl matching worsening which compromises the performance and emissions levels.