Parametric investigation of a large two-stroke marine high-pressure direct injection engine by using computational fluid dynamics method

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Abstract

This study aims at the parametric investigation of the gas injection system settings of a large marine two-stroke dual fuel engine by using a developed and customized CFD method in the ANSYS Fluent software. The investigated engine
injection system parameters include the gas injection timing, the gas injection duration, the gas injector lateral angle, and the gas injector holes number. Based on the comparison of the predicted performance parameters for the closed-cycle
processes, the results indicate that the gas injector lateral angle is the most significant parameter that affects the engine power as well as the NO and CO2 emissions. For satisfying the contradictory objectives of retaining the engine
power and reducing the NO and CO2 emissions, appropriate design settings for the gas injection are recommended for the investigated engine operation in the gas mode at 75% load.
Original languageEnglish
Number of pages13
JournalProceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment
Early online date21 Jan 2020
DOIs
Publication statusE-pub ahead of print - 21 Jan 2020

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Keywords

  • marine two-stroke dual fuel engine
  • high pressure direct gas injection
  • gas injection parameters
  • parametric investigation
  • CFD analysis

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