000131292 001__ 131292
000131292 005__ 20190718075638.0
000131292 037__ $$aCONF
000131292 245__ $$aNumerical simulations of a prechamber autoignition cogeneration engine operating on natural gas
000131292 260__ $$c2009
000131292 269__ $$a2009
000131292 336__ $$aConference Papers
000131292 520__ $$aA numerical model for a prechamber autoignition gas engine under development has been established based on an experimental test case. With a simplified finiterate/ eddy-dissipation model for the combustion of natural gas, it was possible to properly reproduce the experiment considering the combustion duration, ignition timing and overall energy balance. The predefined empiric constant of the eddydissipation model had to be increased by a factor of 10. A modification of the original cylindrical-conical prechamber geometry to a simpler cylindrical one was tested with a simulation. The influence of burnt gases inside the prechamber was assessed simulating the mixture formation inside the prechamber. The simulations showed little effect of taking into account the non-homogeneities in the gas phase on the combustion duration. The cylindrical geometry tested did not show any improvement in the combustion homogeneity inside the prechamber and its volume (limited by the real engine geometry) is not sufficient to properly ignite the main chamber.
000131292 6531_ $$aautoignition
000131292 6531_ $$aprechamber
000131292 6531_ $$acogeneration
000131292 6531_ $$acomputational fluid dynamics
000131292 6531_ $$alenisystem
000131292 6531_ $$aleniorc
000131292 700__ $$0240454$$g169145$$aHeyne, Stefan
000131292 700__ $$aMillot, Gregory
000131292 700__ $$0240152$$g105085$$aFavrat, Daniel
000131292 7112_ $$d31 august - 3 september 2009$$cFoz do Iguacu, Brazil$$aECOS 2009
000131292 8564_ $$uhttp://www.eventus.com.br/ecos2009/$$zURL
000131292 8564_ $$uhttps://infoscience.epfl.ch/record/131292/files/art_2007_009_Numerical%20simulations.pdf$$zn/a$$s653508
000131292 909C0 $$xU10315$$0252044$$pLENI
000131292 909CO $$qGLOBAL_SET$$pconf$$pSTI$$ooai:infoscience.tind.io:131292
000131292 937__ $$aLENI-CONF-2009-008
000131292 973__ $$rREVIEWED$$sSUBMITTED$$aEPFL
000131292 980__ $$aCONF