Publications
Paper
Ship course-keeping in waves using sample-efficient reinforcement learning
Feb 1, 2025
Maintaining a steady course in waves is important for ships for various reasons such as safety, fuel efficiency, and comfort. This has commonly been ...
Paper
General reinforcement learning control for AUV manoeuvring in turbulent flows
Oct 1, 2024
Turbulence induces unsteady loads on autonomous underwater vehicles (AUVs) and may present a significant navigation challenge. This leads to ...
Paper
An Experimental Study on Visualisation and Passive Control of Model Propeller Boundary Layers
Mar 20, 2024
This paper examines the complications of a laminar propeller boundary layer during towing tank model testing and proposes a solution in the form of ...
Paper
Uncertainty quantification in the prediction of cavitation inception of the Duisburg Propeller Test Case
Oct 16, 2022
Accurate quantitative prediction of marine propeller performance and cavitaiton inception criteria has important implications for the eventual ship ...
Paper
Estimating parameter and discretization uncertainties using a laminar–turbulent transition model
Nov 15, 2021
For computational fluid dynamic (CFD) simulations at intermediate Reynolds numbers, laminar-to-turbulent transition plays an important role in the ...
Paper
Parameter Uncertainty Quantification applied to the Duisburg Propeller Test Case
Sep 30, 2019
At model-scale conditions (diameter-based Reynolds number below 106), laminar-to-turbulent transition plays an important role on the performance of ...
Paper
Propeller Performance Prediction in an Artificially Generated Wake Field Using RANSE
Sep 30, 2019
Marine propellers usually operate behind a ship and are subject to a non-uniform inflow field due to the ship’s boundary layer and wake system. This ...
Paper
On the use of the γ−R˜eθt transition model for the prediction of the propeller performance at model-scale
Dec 15, 2018
The goal of the present work is to improve the prediction of propeller performance at model-scale using a local correlation transition model. ...
Paper
Recent Developments in Computational Methods for the Analysis of Ducted Propellers in Open Water
Aug 5, 2018
This paper presents an overview of the recent developments at IST and MARIN in applying computational methods for the hydrodynamic analysis of ...
Paper
Prediction of the Open-Water Performance of Ducted Propellers with a Panel Method
Mar 19, 2018
In the present work, a comparison between the results obtained by a panel code with a Reynolds-averaged Navier-Stokes (RANS) code is made to obtain ...
Paper
On the Use of the γ-Reθ Transition Model for the Prediction of the Propeller Performance at Model-Scale
Jun 12, 2017
The goal of the present work is to improve the prediction of propeller performance at model-scale using a local correlation transition model. An ...
Paper
Computational fluid dynamics prediction of marine propeller cavitation including solution verification
Jun 12, 2017
This paper analyses the effect of grid refinement on computational fluid dynamics simulations of cavitating propeller flow. Refinement is made both ...
Paper
Validation Exercises of Mathematical Models for the Prediction of Transitional Flows
Sep 11, 2016
This paper presents Validation exercises of mathematical models for the simulation of flows where transition from laminar to turbulent regime plays ...
Paper
Computational Study On Power Reduction By A Pre-Duct For A Bulk Carrier
Dec 2, 2015
This paper presents computational results of the flow around the Japanese Bulk Carrier (JBC). The overall agreement with the experiments for all ...
Paper
Using the FW-H equation for hydroacoustics of propellers
Sep 28, 2015
Marine propeller noise and vibration has been studied in order to reduce acoustic signature, improve fatigue life and comfort onboard, and, more ...
Paper
Numerical Studies For Verification And Validation Of Open-Water Propeller RANS Computations
Jun 15, 2015
In this paper, viscous flow calculation using a RANS method are presented for two marine propellers in open-water conditions at model-scale. A ...
Paper
The Potsdam propeller test case in oblique flow - prediction of cavitation patterns and pressure pulses
Jun 4, 2015
We report computations performed as part of the Second International Workshop on Cavitating Propeller Performance, using the Potsdam Propeller Test ...
Paper
Viscous flow simulations of propellers in different Reynolds number regimes
May 31, 2015
Full-scale propeller performance prediction is mostly based on model-scale experiments that are extrapolated to fullscale values. Computational ...
Paper
Marine propeller acoustic modelling - comparing CFD results with an acoustic analogy method
May 31, 2015
Propeller noise and vibration is important in the design of ships in order to improve comfort, reduce signature or mitigate environmental impact. ...
Paper
Determination of Scaled Wind Turbine Rotor Characteristics from 3 Dimensional RANS Calculations
Feb 4, 2015
Previous studies showed the importance of three-dimensional effects when calculating the characteristics of a scaled downturbine rotor [1, 6, 7]. ...
Paper
Implementing The Ffowcs Williams-Hawkings Acoustic Analogy Into A Viscous CFD Solver
Sep 30, 2014
This paper details the verification of an FW-H equation implementation within the CFD code, ReFRESCO, as well as comparing results obtained with ...
Paper
A Comparison of Panel Method and RANS Calculations for a Ducted Propeller System in Open-Water
May 5, 2013
In this paper, a comparison between results of a panel method and a RANS solver is made for a ducted propeller system in open-water. The panel ...
Paper
Numerical simulation of propeller-hull interaction and determination of the effective wake field using a hybrid RANS-BEM approach
May 5, 2013
In this study propeller-hull interaction is investigated numerically using a combination of a steady viscous CFD method (RANS) for the ship flow and ...
Paper
Viscous-Flow Calculations On An Axial Marine Current Turbine
Jul 1, 2012
In this paper, the flow over a marine current turbine is studied. As a test case, the benchmark turbine published in [1, 2] is selected. A ...
Magazine
CFD facilitates better understanding of scale effects
Dec 16, 2011
Reading time 6 minutes
Ship resistance and propulsion are principal factors affecting the
fuel efficiency of maritime transport. To be able to accurately predict a ship's ...
Paper
Viscous Flow Computations On Propulsors - Verification, Validation And Scale Effects
Mar 22, 2011
In this paper, viscous flow calculations using CFD code ReFRESCO are shown for three propulsors in open-water configuration: the INSEAN E779A ...