A semi-empirical model for ship speed loss prediction at head sea and its validation by full-scale measurements
Artikel i vetenskaplig tidskrift, 2020

This paper proposes a semi-empirical model to estimate a ship’s speed loss at head sea. In the model, the formulas to estimate a ship’s added resistance due to waves have been further developed to better consider the ship hull forms, in addition to other main particulars. Based on the model experimental tests of 11 ships in regular head waves, the new formulas have more flexible forms and can better fit the test results than other similar models. In addition, this model proposes a significant wave height based correction factor multiplied to the conventional integration to compute wave resistance in irregular waves. This factor is supposed to consider the impact of coupled ship motions in high waves on a ship’s added resistance due to waves. The model is validated by the full-scale measurement from two vessels, a PCTC and a chemical tanker. The encountered weather conditions along the sailing routes are extracted from the reanalysis metocean data. The results indicate that the proposed model can provide quite accurate predictions of ship speed loss in head sea operations.

Irregular sea

Head wave

Full-scale measurements

Speed loss

Added resistance due to waves

Författare

Xiao Lang

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Wengang Mao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Ocean Engineering

0029-8018 (ISSN)

Vol. 209 107494

Utforska innovativa lösningar för arktisk sjöfart

STINT, 2017-05-01 -- 2020-06-30.

EcoSail - Miljövänlig och kunddriven Sailplan optimeringstjänst

Europeiska kommissionen (Horisont 2020), 2018-11-01 -- 2021-04-30.

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Ämneskategorier

Meteorologi och atmosfärforskning

Strömningsmekanik och akustik

Marin teknik

Oceanografi, hydrologi, vattenresurser

Signalbehandling

Matematisk analys

Fundament

Grundläggande vetenskaper

DOI

10.1016/j.oceaneng.2020.107494

Mer information

Skapat

2020-05-22