Send Joop Helder a message
Expertise areas
Publications
Paper
Non-Linear Wave Run-Up Along the Side of Sailing Ships Causing Green Water on Deck: Experiments and Deterministic Calculation
Aug 1, 2020
Experiments with a flat plate in oblique waves at different speeds, wave conditions, headings and drift speed were done to evaluate non-linear wave ...
Magazine
Extreme wave loading… the future is hybrid!
Apr 25, 2018
Reading time 3 minutes
Since 2003, MARIN has built up an extensive trackrecordin testing floating wind turbines. To date, themain method for model testing has been based ...
Magazine
Joining forces to capture extreme loads
Apr 21, 2017
Reading time 3 minutes
The possible occurrence of negative air gaps on offshore structures in storm conditions has recently attracted significant attention. A new JIP ...
Magazine
JIPs - sharing experiences and building knowledge
Apr 21, 2017
Reading time 6 minutes
Joint Industry Projects are still one of the most important steps in the development, sharing and application of knowledge. Participants are welcome ...
Paper
Validation of CFD for a deterministic breaking wave impact on a semi submersible
Oct 3, 2016
For structural design, prediction of run-up, green water and impact loads have to be taken into account, to assure the integrity and safety of ...
Magazine
BreaKin JIP will provide insight into breaking wave loads on offshore structures
Apr 22, 2016
Reading time 3 minutes
BreaKin is a new joint industry project addressing the kinematics of breaking waves and linking these to the wave loads that may result.
Magazine
Joint R&D in Offshore JIPs
Apr 22, 2016
Reading time 6 minutes
The offshore industry works closely together to share knowledge,
experience and costs. Here we give an update on the latest Joint
Industry Projects. ...
Paper
Validation of CFD for run-up and wave impact on a semi submersible
Mar 9, 2016
To assess the integrity and safety of structures offshore, prediction of run-up, green water, and impact loads needs to be made during the ...
Magazine
MARIN uses CFD to assess SSPs revolutionary new HUB design
Aug 21, 2015
Reading time 6 minutes
MARIN combined CFD with fast-time simulations and intensive testing on its bridge simulator to explore the full potential of the
new SSP HUB design.
Paper
Turbulence Modeling for Locally-Refined Free-Surface Flow Simulations in Offshore Applications
Jun 21, 2015
To study extreme hydrodynamic wave impact in offshore and coastal engineering, the VOF-based CFD simulation tool ComFLOW is being developed. ...
Paper
Deterministic simulation of breaking wave impact and flexible response of a fixed offshore wind turbine
Jun 5, 2015
Reading time 6 minutes
The effects of operational wave loads and wind loads on offshore mono pile wind turbines are well understood. For most sites, however, the water ...
Magazine
MARIN spearheads advanced wave impact modelling initiatives
Aug 29, 2014
Reading time 6 minutes
Due to the complexity of wave impact modelling, MARIN is starting several new research initiatives.
Magazine
The impact of ships that pass in the night... or in the day
Aug 2, 2011
Reading time 6 minutes
MARIN is involved in several projects examining the effects of passing ships. Here we present the many ways we help to shed light on this phenomenon.
Other experts
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping