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Johan Bosschers

Senior Researcher

Research & Development

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Expertise areas
Publications
Magazine
Risk reduction by cavitation control

Jun 1, 2019

Reading time 9 minutes

As all kinds of stakeholders regarding cavitation-related issues are represented in CRS, cavitation has been a major research topic through the CRS ...
Magazine
Propulsion design

Jun 1, 2019

Reading time 9 minutes

In the year 2030, the French Naval Architect Monique Lorand was tasked to optimise a preliminary ship design in only 24 hours - a task deemed ...
Paper
Validation studies of a boundary element method for ducted propellers

May 26, 2019

This paper provides an overview of several validation studies that were carried out for a Boundary Element Method (BEM) for ducted propellers. These ...
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
A Semi-Empirical Prediction Method for Broadband Hull-Pressure Fluctuations and Underwater Radiated Noise

May 2, 2018

A semi-empirical prediction method for broadband hull-pressure fluctuations and underwater radiated noise by propeller tip vortex cavitation A ...
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 ...
Magazine
Supporting silent ships: measuring underwater radiated noise from cavitating ship propellers

Aug 17, 2017

Reading time 6 minutes

Have you ever had problems talking to someone in a noisy environment such as a busy restaurant? The same happens to marine animals, which use sound ...
Paper
A Semi-Empirical Method to Predict Broadband Hull Pressure Fluctuations and Underwater Radiated Noise

Jun 12, 2017

A semi-empirical method to predict broadband hull pressure fluctuations and underwater radiated noise by cavitating tip vortices A semi-empirical ...
Paper
Validation of computational and experimental prediction methods

Sep 4, 2016

Validation of computational and experimental prediction methods for the underwater radiated noise of a small research vessel Model tests and ...
Magazine
Accurate predictions for noise levels of cavitating propellers now possible

Aug 19, 2016

Reading time 6 minutes

As underwater radiated noise levels in the oceans increases, MARIN has investigated just how much cavitating propellers are to blame.
Paper
Suppression Of underwater Noise Induced by Cavitation: SONIC

Apr 18, 2016

In EU FP7 project SONIC, partners set out in October 2012 to study the underwater radiated noise of ships and shipping. This paper gives an overview ...
Paper
Influence Of Local And Adaptive Mesh Refinement On The Tip Vortex Characteristics Of A Wing And Propeller

Jun 15, 2015

Two different methods to obtain nearly grid independent solutions for tip vortex flow were tested for a wing and a propeller.
Paper
Computational and Experimental Prediction of Propeller Cavitation Noise

May 21, 2015

Computational and experimental methods for the prediction of underwater-radiated noise due to propeller cavitation as in use at MARIN are discussed ...
Paper
Underwater radiated noise measurements with a silent towing carriage in the depressurized wave basin

Sep 1, 2013

Reading time 4 minutes

Because of the increasing interest in underwater radiated noise levels of ships, noise mitigation measures have been applied to the new secondary ...
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
Scale effects on hull pressure fluctuations due to cavitating propellers

Oct 1, 2012

In this paper we describe several scale effects that may occur on cavitating propellers and the resulting (low-frequency) hull pressure fluctuations.
Magazine
Silence is golden... especially underwater

Apr 20, 2012

Reading time 3 minutes

MARIN introduces a new silent towing carriage in a bid to further the industry's knowledge about underwater-radiated noise.
Paper
Open-Water Thrust and Torque Predictions of a Ducted Propeller System With a Panel Method

Jun 15, 2011

This paper discusses several modelling aspects which are important for the performance predictions of a ducted propulsor with a low-order Panel ...
Paper
On the influence of viscous effects on 2-D cavitating vortices

Oct 11, 2010

This paper describes the influence of viscous effects on an axisymmetric cavitating vortex in 2-D viscous incompressible flow in steady and unsteady ...
Paper
Modeling and analysis of a cavitating vortex in 2D unsteady viscous flow

Aug 17, 2009

Two models, one analytical and other computational, are developed to describe an axisymmetriccavitating vortex in two-dimensional, unsteady, ...
Paper
Investigation of hull pressure fluctuations generated by cavitating vortices

Jun 22, 2009

The paper describes an ongoing research program at MARIN for the investigation of low frequency hull pressure fluctuations caused by cavitating ...
Paper
Investigation of the resonance frequency of a cavitating vortex

Apr 24, 2009

Existing measurement data of the pressure fluctuations suggest the presence of a resonance frequency generating hull pressure fluctuations. The ...
Paper
Model Scale Measurements of Surface Ship Radiated Flow Noise

Mar 24, 2009

Flow noise has been investigated by the collaborative US-NL project Mechanisms and Prediction of Surface Ship Radiated Flow Noise. The paper will ...
Magazine
Surface Ship Radiated Flow Noise project completed

Jan 29, 2009

Reading time 3 minutes

Advances in weapon and sensor capabilities are driving an increased interest in the control of underwater signatures of naval platforms.
Paper
Similarity solutions for viscous cavitating vortices

Dec 1, 2008

Two models, one analytical and other computational, are developed to describe an axisymmetriccavitating vortex in two-dimensional, unsteady, ...
Paper
Similarity solutions for viscous cavitating vortex cores

Jun 29, 2008

Theoretical analysis of the dynamic behavior of cavitating vortices requires knowledge of the velocity distribution in the vortex core. For that ...
Paper
Analysis of inertial waves on inviscid cavitating vortices in relation to low-frequency radiated noise

Jun 9, 2008

The dispersion relation of inertial waves on inviscid cavitating vortices ('Kelvin waves') is reconsidered and extended to include the influence of ...
Paper
Computational Analysis of Propeller Sheet Cavitation and Propeller Ship Interaction

Mar 26, 2008

This paper describes a computational procedure which is being developed for the practical analysis of propeller sheetcavitation and propeller-ship ...
Magazine
PROCAL beats the panel!

Oct 17, 2007

Reading time 6 minutes

With the increase in fuel prices, interest in efficient ship propulsors is rapidly growing but the last couple of decades an opposite trend also can ...
Paper
Broadband hull pressure fluctuations and cavitating vortices - an investigation of resonance frequencies

Sep 9, 2007

This paper presents new findings obtained in an ongoing research program at MARIN, which concerns cavitating tip vortices on ship propellers and the ...
Paper
Influence of the reduced frequency on the 2-D partial sheet cavitation behaviour for a foil in a gust

Sep 1, 2006

This paper presents a numerical study of the influence of the reduced frequency on the 2-D partial sheet cavitation behaviourfor a foil operating in ...
Paper
A verification study on low-order three-dimensional potential-based panel codes

Jan 9, 2006

A verification study of two different panel codes for three-dimensional potential flow is performed by grid convergence studies. The two codes used ...
Paper
Validation of a BEM for modelling steady sheet cavitation on marine propellers

Jun 1, 2005

The current paper presents results obtained with a 3-D boundary element method which is being developed for the analysis of cavitating marine ...
Paper
Surface ship underwater radiated flow noise

Jan 1, 2005

An increasing focus on naval operations in littoral waters and the advances in weapon and sensor capabilities are driving an increased interest in ...
Paper
A study on the modeling of marine propeller tip flows using BEM

Jan 1, 2005

It has been recognized [1] that Boundary Element Methods (BEM) are able to predict the pres-sure distribution in the steady case with reasonable ...

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