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Development and Validation of 3D-CFD Injection and Combustion Models for Dual Fuel Combustion in Diesel Ignited Large Gas Engines

Lucas Eder (), Marko Ban (), Gerhard Pirker (), Milan Vujanovic (), Peter Priesching () and Andreas Wimmer ()
Additional contact information
Lucas Eder: Large Engines Competence Center, 8010 Graz, Austria
Marko Ban: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10002 Zagreb, Croatia
Gerhard Pirker: Large Engines Competence Center, 8010 Graz, Austria
Milan Vujanovic: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10002 Zagreb, Croatia
Peter Priesching: AVL List GmbH, Graz 8020, Austria
Andreas Wimmer: Institute of Internal Combustion Engine and Thermodynamics, Graz University of Technology, 8010 Graz, Austria

Energies, 2018, vol. 11, issue 3, 1-23

Abstract: This paper focuses on improving the 3D-Computational Fluid Dynamics (CFD) modeling of diesel ignited gas engines, with an emphasis on injection and combustion modeling. The challenges of modeling are stated and possible solutions are provided. A specific approach for modeling injection is proposed that improves the modeling of the ballistic region of the needle lift. Experimental results from an inert spray chamber are used for model validation. Two-stage ignition methods are described along with improvements in ignition delay modeling of the diesel ignited gas engine. The improved models are used in the Extended Coherent Flame Model with the 3 Zones approach (ECFM-3Z). The predictive capability of the models is investigated using data from single cylinder engine (SCE) tests conducted at the Large Engines Competence Center (LEC). The results are discussed and further steps for development are identified.

Keywords: dual fuel combustion; 3D-CFD modeling; ECFM-3Z; diesel ignited gas engine; ignition delay modeling; experimental validation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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