Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

A Computational Study of the Mixture Preparation in a Direct–Injection Hydrogen Engine

[+] Author and Article Information
Jerome Le Moine, P. K. Senecal

Convergent Science Inc.,
Middleton, WI 53711

Sebastian A. Kaiser

University of Duisburg-Essen,
Duisburg 45141, Germany

Victor M. Salazar

General Electric Global Research,
Schenectady, NY 12309

Jon W. Anders, K. I. Svensson, C. R. Gehrke

Caterpillar Inc.,
Peoria, IL 61614

Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received March 2, 2015; final manuscript received April 10, 2015; published online May 12, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 137(11), 111508 (Nov 01, 2015) (5 pages) Paper No: GTP-15-1074; doi: 10.1115/1.4030397 History: Received March 02, 2015; Revised April 10, 2015; Online May 12, 2015

This paper reports the validation of a three-dimensional numerical simulation of the mixture preparation in a direct-injection (DI) hydrogen-fueled engine. Computational results from the commercial code CONVERGE are compared to the experimental data obtained from an optically accessible engine. The geometry used in the simulation is a passenger-car sized, four-stroke, and spark-ignited engine. The simulation includes the geometry of the combustion chamber as well as the intake and exhaust ports. The hydrogen is supplied at 100 bar from a centrally located injector with a single-hole nozzle. The comparison between the simulation and experimental data is made on the central vertical plane. The fuel mole concentration and flow field are compared during the compression stroke at different crank angles (CA). The comparison shows good agreement between the numerical and experimental results during the early stage of the compression stroke. The penetration of the jet and the interaction with the cylinder walls are correctly predicted. The fuel spreading is under predicted which results in differences in flow field and fuel mixture during the injection between experimental and numerical results. At the end of the injection, the fuel distribution shows some disagreement which gradually increases during the rest of the simulation.

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Grahic Jump Location
Fig. 1

Representation of the engine with exhaust ports and intake ports with tumble plates

Grahic Jump Location
Fig. 2

In-cylinder and injector mesh resolution at −130 deg ATDC

Grahic Jump Location
Fig. 3

Velocity field—comparison between experiment and simulation

Grahic Jump Location
Fig. 4

Hydrogen mole fraction—comparison between experiment and simulation



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