This paper investigates the effect of varying propulsion factors (wake fraction, thrust deduction, relative rotative efficiency) due to waves on overall vessel performance. Four different ships have been considered where experimental values of propulsion factors in waves are available. Simulations have been performed for a realistic transpacific journey to compute variation in propulsion factors and efficiencies due to waves in realistic operating conditions. The predicted energy consumption was found to vary from -12% to +4% as a result of changes in propulsion factors due to waves. The propulsion efficiency is significantly affected in the presence of waves so it is important to include the effect of changes in propulsion factors, especially thrust deduction and wake fraction, for accurate vessel performance prediction.
|Number of pages||8|
|Publication status||Published - 2019|
|Event||Sixth International Symposium on Marine Propulsors (smp'19) - Roma Centro Hotel, Rome, Italy|
Duration: 26 May 2019 → 30 May 2019
|Conference||Sixth International Symposium on Marine Propulsors (smp'19)|
|Location||Roma Centro Hotel|
|Period||26/05/2019 → 30/05/2019|
- Vessel performance
- Propulsion inwaves
- Varying propulsion factors
Taskar, B., Regener, P. B., & Andersen, P. (2019). The impact of propulsion factors on vessel performance in waves. Paper presented at Sixth International Symposium on Marine Propulsors (smp'19), Rome, Italy.