Publications - Aktis Hydraulics

Recent publications

In October 2019 Aktis Hydraulics presented two papers at Smart Rivers Conference 2019 (Lyon, France). In June-July 2019 we presented at OMAE 2019.

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.

Click here to download the paper

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.

Click here to download the paper

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

Publications by our staff

(Excerpt of) Publications by our staff

Veldman, J.J., J.J., Berentsen, R.& Dam, M.A.C. Performance of a lock with vertical lift gates after renovation; case study including measurements and optimisation of levelling system; presented at the Smart Rivers Conference – Lyon, France; October 2019
Veldman, J.J., Bousmar, D., Kortlever, W. & Dam, M.A.C. Simple but accurate calculation method for vessel speed in a minimum capacity lock, Proc. of PIANC World Congres, Panama City, Panama, May 2018
Veldman, J.J., Dubbeldam, J.P. & Zuiderwijk, W.M. Design Guidelines for River Harbours and Verification of Harbour Layout in the Portable REMBRANDT Inland Bridge Simulator Including Public Demonstration, PIANC Smart Rivers Conf., 2015, Buenos Airs, Argentina, 2015, paper #136, 7-11 Sept. 2015
Bousmar, D., Schweter, L. & Veldman, J.J., Navigation Studies for the Seine-Scheldt East Project, PIANC Smart Rivers Conf. 2013, Maastricht/Liege, The Netherlands/Belgium, paper #90, 23-27 Sept. 2013
Veldman, J.J., IJmker, E.L. & Dubbeldam, J.P. Room for the River, cross-currents and Inland navigation, PIANC Smart Rivers Conf. 2013, Maastricht/Liege, The Netherlands/Belgium, paper #62, 23-27 Sept. 2013
BOS, M., KOOP, O.R, BOLT, E., Safety Level of a Probabilistic Admittance Policy, Proceedings of the ASME 2011 30th Int. Conf. on Ocean, Offshore and Arctic Engineering, OMAE, Rotterdam, The Netherlands, June 19-24, 2011.

Chen, Z., Hurdle D., Kram, N., Lomónaco, P., Cornett, A.: Design And Testing Of Scour Protection For Adriatic LNG OMAE 2011.
Hurdle, D., Chen, Z.: Pipeline stabilisation, Deciphering seabed dynamics. World Pipelines 2006.
Hurdle, D.P., Onassis, J. & Veldman, J.J. Probabilistic Computations of Downtime for Inland Shipping in the Second Maasvlakte, Proc. of OMAE 2002-28402, 21st Int. Conf. on Onshore Mechanics and Arctic Engineering, Oslo, Norway, 22-28 June 2002
Bos, K.-J., Chen, Z., Verheij, H., Onderwater, M., Visser, M.: Local Scour And Protection Of F3 Offshore GBS Platform. OMAE 2002, Oslo
Chen, Z. et al, Morphology and Pipeline Design Through a Dynamic Landfall Area, The Black Sea Pipeline, Proc. Of Offshore Mechanics and Arctic Engineering Conference, Oslo, 2002.
Chen Z. et al An Integrated Approach To Pipeline Design Through Sandwave Fields: Dongfang Pipeline, OMAE conference, Brazil, 2001.
Chen, Z et al Probabilistic Design of Burial Depth of Offshore Pipelines and Cables, Proc. Of Offshore Mechanics and Arctic Engineering Conference, Lisbon, 1998