Matching engine to propeller for an lngc under rough weather

Abstract:

The present work aims to provide a comprehensive approach to perform the engine to propeller matching for a Liquefied Natural Gas Carrier (LNGC) under rough weather. A weather condition was included in the assessment of total resistance, and thereby affected the propeller’s open water efficiency, shaft speed and brake power. Constraints were included to the approach in order to avoid propellers that could present issues concerning strength, cavitation and vibration. The case study was designed using an LNGC of 175,000 m 3 holding three service speeds. Thus, the propeller to engine match-ings were addressed for 10 randomly chosen propulsion installations. The lowest total required power was over 14% lower than the highest. Brake power for rough weather was over 18% higher than for still water. Therefore, the approach proved useful and highlighted the need to explore a broad range of propellers and engines, as well as to consider weather conditions.

Año de publicación:

2018

Keywords:

Fuente:

scopus