Recent publications
In June 2022 Aktis Hydraulics presented a paper at the OMAE conference (Hamburg, Germany): “On the Calibration of Metocean Time Series Using Machine Learning” [OMAE2022‑80274]
In June 2021 Aktis Hydraulics presented a paper at the ShipStab Conference on Ship Stability, Dynamics and Safety hostsed online, organised by the University of Strathclyde: “Parametric roll excited by low wave heights: a new method to predict critical sea states”
In October 2019 Aktis Hydraulics presented two papers at Smart Rivers Conference 2019 (Lyon, France). In June-July 2019 we presented at OMAE 2019 (Glasgow, Scotland).
Further, we contribute to the ongoing Hawa-III JIP (2022 – 2024) run by Marin & Deltares to validate the overall design methodology of nearshore terminals, to assess the effectiveness of breakwater and innovative mooring solutions to improve the workability of nearshore terminals in view of Infra-Gravity long wave excitation and resonance.
Re-engineering of the gate lifting schedules of Lock Delden
Smart Rivers, morning Session B5 (We. 2 Oct. 2019)
The paper shows that the lifting schedule of the gate lock has been optimised resulting in:
- A reduction of the levelling time with 2 up to 5 min.
As a result the lock can now handle up to 10 to 25% more vessels per day. - A reduction of the longitudinal forces on the vessel with 30%;
Lock Delden is situated in the Twentekanaal in the Eastern part of the Netherlands.
The transport of containers by inland vessels
Smart Rivers, afternoon Session B6 (We. 2 Oct. 2019)
The paper illustrates that large vessels (Class Va, i.e. over 200 TEU) are most economic on long distance (>400 km) and on large main waterways.
The paper further illustrates that Class IV (approx. 100 TEU) can however be more economic and should be considered for:
- Transport over short distances (relatively short transit times compared to cargo handling at terminal);
- Transport through existing waterway infrastructure with limitation in air-draft and draft.
Squall Detection and Analysis from Historical Satellite Data
OMAE 2019, afternoon Session 2-15-1 (Mo. 10 Jun. 2019) on
The paper presents a method to estimate extreme wind speeds due to squalls or thunderstorms based on altimeter data.
The paper adresses the information extracted from the satellite samples and the assumptions made . Two case studies are presented where the method was succesfully applied to obtain reasonble results in West-Africa and Brazil. The method proposed fills a knowledge gap by providing an estimate of squall wind speeds in areas where no other sources of measurements are available.
Reference: OMAE 2019-96549