Naslov
Uncertainty of weather simulation modeling approaches for the bulk-carrier

Autori
Prpić-Oršić, Jasna ; Sasa, Kenji ; Chen, Chen ; Faltinsen, Odd Magnus

Kolaboracija
Department of Maritime Sciences, Kobe University, Japan ; School of Navigation, Wuhan University of Technology, Wuhan, China ; NTNU, Trondheim, Norway

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Joint ISSC/ITTCInternational Workshop / Guedes Soares, Carlos - Lisabon, 2021, 1-1

Skup
Joint ISSC/ITTCInternational Workshop

Mjesto i datum
Lisabon, Portugal, 01.02.2021. - 03.02.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Uncertainty ; Weather simulation ; onboard measurement

Sažetak
Safety, cost-effectiveness and environmental care are the most important aspects ship's route selection. Today, this latter aspect is gaining in importance due to the intense pressure from the community on those with the potential to reduce environmental pollution by reducing greenhouse gases (GHG) emissions. Maritime transport is certainly one of the significant contributors to global pollution and seeks to control and reduce it through conventions. One of the major factors in maritime traffic is the weather, but the assessment of weather conditions is not uniquely determined, which directly affect the motions and loads of the ship in the rough sea. This paper presents a six-year survey (2010-2016) and a comprehensive measurement campaign on a bulk carrier of the 28000 DWT class. The ship, known as the "tramper", had no fixed route, for a six-year period it sailed frequently in the South hemisphere. During the whole period, the navigational parameters such as weather data (wind speed and wind direction), wave data (wave height and directional wave spectrum), engine data (engine revolutions, engine power, fuel oil consumption, and exhaust gas temperatures on all six cylinders of the main engine), voyage data (ship speed, ship position, ship course), and motion data (pitch, roll, and yaw) were measured. Although mechanical troubles have occurred in 2-3 years of the measurement period, the ship has encountered many rough sea conditions as shown here. This paper compares the subsequently reconstructed weather conditions for several specific situations in which a ship operated. Using the meteorological and wave models, the Weather Research and Forecasting Model (WRF) and WAVEWATCH III (WW3), numerical simulations of the weather and sea state were conducted for eight rough sea cases using the grid point value (GPV) datasets National Centers for the Environmental Prediction Final (NCEP-FNL) and and the European Center for Medium-range Weather Forecasts Interim Reanalysis (ERA-Interim). Those simulations were validated using on-board observations of vessel performance and operation in rough sea conditions.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA