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Douwe Rijpkema

Researcher CFD

Research & Development

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Publications
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
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
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
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
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
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
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 ...