NUMERICAL ANALYSIS OF SEVERAL PORT CONFIGURATIONS IN THE FAIRBANKS-MORSE 38D8-1/8 OPPOSED PISTON MARINE ENGINE

Lamas, M.I.; Rodriguez, C.G.; Rodriguez, J.D.; Telmo, J.

Brodogradnja (Mar 2015)

NUMERICAL ANALYSIS OF SEVERAL PORT CONFIGURATIONS IN THE FAIRBANKS-MORSE 38D8-1/8 OPPOSED PISTON MARINE ENGINE

Lamas, M.I.,
Rodriguez, C.G.,
Rodriguez, J.D.,
Telmo, J.

Affiliations

Lamas, M.I.: Escuela Politécnica Superior. C/Mendizábal s/n. 15403 Ferrol. A Coruña. Spain
Rodriguez, C.G.: University of A Coruña
Rodriguez, J.D.: University of A Coruña
Telmo, J.: University of Santiago de Compostela

Journal volume & issue: Vol. 66, no. 1
pp. 1 – 11

Abstract

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The aim of the present paper is to analyze several port configurations in the Fairbanks-Morse 38D8-1/8 marine diesel engine. The motivation comes from the high number of intake and exhaust ports which characterizes this engine. The scavenging and trapping efficiency were studied by modifying several parameters related to the ports, such as the inclination, shape, pressure and number. To this end, a numerical model based on the commercial software ANSYS Fluent was employed. Numerical results were validated using experimental measurements performed on a Fairbanks-Morse 38D8-1/8 engine installed on a submarine. The results confirmed that the influence of the port shape is practically negligible; nevertheless, an adequate combination of the inclination, pressure and number of ports can modify the scavenging and trapping efficiency noticeably.

Published in Brodogradnja

ISSN: 0007-215X (Print); 1845-5859 (Online)
Publisher: Faculty of Mechanical Engineering and Naval Architecture
Country of publisher: Croatia
LCC subjects: Naval Science: Naval architecture. Shipbuilding. Marine engineering
Website: http://www.fsb.hr/brodogradnja

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