Bernard Malherbe - Academia.edu (original) (raw)
Marine geological engineer with expertise in coastal, port and dredging engineering. Invited lecturer at University of Ghent, Leuven for major in Dredging Technology
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Papers by Bernard Malherbe
Volume 7: Ocean Space Utilization; Ocean Renewable Energy, 2012
Large-scale commercial exploitation of wave energy is certain to require the deployment of wave e... more Large-scale commercial exploitation of wave energy is certain to require the deployment of wave energy converters (WECs) in arrays, creating ‘WEC farms’. An understanding of the hydrodynamic interactions in such arrays is essential for determining optimum layouts of WECs, as well as calculating the area of ocean that the farms will require. It is equally important to consider the potential impact of wave farms on the local and distal wave climates and coastal processes; a poor understanding of the resulting environmental impact may hamper progress, as it would make planning consents more difficult to obtain. It is therefore clear that an understanding the interactions between WECs within a farm is vital for the continued development of the wave energy industry. To support WEC farm design, a range of different numerical models have been developed, with both wave phase-resolving and wave phase-averaging models now available. Phase-resolving methods are primarily based on potential flo...
Water, 2019
In this study, a series of modules is integrated into a wave-to-wire (W2W) model that links a Bou... more In this study, a series of modules is integrated into a wave-to-wire (W2W) model that links a Boundary Element Method (BEM) solver to a Wave Energy Converter (WEC) motion solver which are in turn coupled to a wave propagation model. The hydrodynamics of the WECs are resolved in the wave structure interaction solver NEMOH, the Power Take-off (PTO) is simulated in the WEC simulation tool WEC-Sim, and the resulting perturbed wave field is coupled to the mild-slope propagation model MILDwave. The W2W model is run for verified for a realistic wave energy project consisting of a WEC farm composed of 10 5-WEC arrays of Oscillating Surging Wave Energy Converters (OSWECs). The investigated WEC farm is modelled for a real wave climate and a sloping bathymetry based on a proposed OSWEC array project off the coast of Bretagne, France. Each WEC array is arranged in a power-maximizing 2-row configuration that also minimizes the inter-array separation distance d x and d y and the arrays are locate...
Coastal Engineering Proceedings, 2011
The initial Ostend harbour entrance at the North Sea coast of Belgium is being modified and exten... more The initial Ostend harbour entrance at the North Sea coast of Belgium is being modified and extended with two new rubble-mound breakwaters. Through an integrated study of the wave penetration in Ostend harbour, the waves are being acquired by prototype measurements and physical and numerical modelling is carried out. Two numerical models are used. SimWave is a numerical model based on Nwogu’s extended Boussinesq equations. The second numerical model is MILDwave, a mild-slope wave propagation model based on the equations of Radder and Dingemans. The present study concentrates on applications of the numerical models, throughout the different design stages and construction phases of the new breakwaters.
International Journal of Environmental Studies, 1995
ABSTRACT Organic‐rich sediments and sediments contaminated with organic compounds can effectively... more ABSTRACT Organic‐rich sediments and sediments contaminated with organic compounds can effectively be treated in situ by the ABR‐CIS™ system (Augmented Bio Reclamation—Conditioning In Situ). ABR‐CIS™ has been applied on full industrial scale on five different projects in Belgium and The Netherlands. These projects show that the sludge‐volume can be reduced and that contaminants can be degraded by stimulated and restored natural microbiological activity.
An extensive program of tracer experiments was carried out for calculating sediment transport in ... more An extensive program of tracer experiments was carried out for calculating sediment transport in the vicinity of the Port of Zeebrugge where extension operations are in progress. Offshore radioactive bottom tracers were used for studying the sand transport along the beaches where erosion problems exist. On the beach itself fluorescent tracers were used. For the evaluation of the silting-up rate of the access channels to the harbour a series of radioactive bottom and suspension tracers were tracked in situ . For determining the efficiency of future dumping grounds a combination of bottom tracers and suspension tracers was used. In total, 18 experiments with radioactive tracers were carried out and 9 with fluorescent ones.
Bulletin International Navigation Association, 2008
![Research paper thumbnail of Geo engineered smart beach & dune reclamations for cost effective coastal protection [Compatibility Mode]](https://attachments.academia-assets.com/49592127/thumbnails/1.jpg)
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Volume 7: Ocean Space Utilization; Ocean Renewable Energy, 2012
Large-scale commercial exploitation of wave energy is certain to require the deployment of wave e... more Large-scale commercial exploitation of wave energy is certain to require the deployment of wave energy converters (WECs) in arrays, creating ‘WEC farms’. An understanding of the hydrodynamic interactions in such arrays is essential for determining optimum layouts of WECs, as well as calculating the area of ocean that the farms will require. It is equally important to consider the potential impact of wave farms on the local and distal wave climates and coastal processes; a poor understanding of the resulting environmental impact may hamper progress, as it would make planning consents more difficult to obtain. It is therefore clear that an understanding the interactions between WECs within a farm is vital for the continued development of the wave energy industry. To support WEC farm design, a range of different numerical models have been developed, with both wave phase-resolving and wave phase-averaging models now available. Phase-resolving methods are primarily based on potential flo...
Water, 2019
In this study, a series of modules is integrated into a wave-to-wire (W2W) model that links a Bou... more In this study, a series of modules is integrated into a wave-to-wire (W2W) model that links a Boundary Element Method (BEM) solver to a Wave Energy Converter (WEC) motion solver which are in turn coupled to a wave propagation model. The hydrodynamics of the WECs are resolved in the wave structure interaction solver NEMOH, the Power Take-off (PTO) is simulated in the WEC simulation tool WEC-Sim, and the resulting perturbed wave field is coupled to the mild-slope propagation model MILDwave. The W2W model is run for verified for a realistic wave energy project consisting of a WEC farm composed of 10 5-WEC arrays of Oscillating Surging Wave Energy Converters (OSWECs). The investigated WEC farm is modelled for a real wave climate and a sloping bathymetry based on a proposed OSWEC array project off the coast of Bretagne, France. Each WEC array is arranged in a power-maximizing 2-row configuration that also minimizes the inter-array separation distance d x and d y and the arrays are locate...
Coastal Engineering Proceedings, 2011
The initial Ostend harbour entrance at the North Sea coast of Belgium is being modified and exten... more The initial Ostend harbour entrance at the North Sea coast of Belgium is being modified and extended with two new rubble-mound breakwaters. Through an integrated study of the wave penetration in Ostend harbour, the waves are being acquired by prototype measurements and physical and numerical modelling is carried out. Two numerical models are used. SimWave is a numerical model based on Nwogu’s extended Boussinesq equations. The second numerical model is MILDwave, a mild-slope wave propagation model based on the equations of Radder and Dingemans. The present study concentrates on applications of the numerical models, throughout the different design stages and construction phases of the new breakwaters.
International Journal of Environmental Studies, 1995
ABSTRACT Organic‐rich sediments and sediments contaminated with organic compounds can effectively... more ABSTRACT Organic‐rich sediments and sediments contaminated with organic compounds can effectively be treated in situ by the ABR‐CIS™ system (Augmented Bio Reclamation—Conditioning In Situ). ABR‐CIS™ has been applied on full industrial scale on five different projects in Belgium and The Netherlands. These projects show that the sludge‐volume can be reduced and that contaminants can be degraded by stimulated and restored natural microbiological activity.
An extensive program of tracer experiments was carried out for calculating sediment transport in ... more An extensive program of tracer experiments was carried out for calculating sediment transport in the vicinity of the Port of Zeebrugge where extension operations are in progress. Offshore radioactive bottom tracers were used for studying the sand transport along the beaches where erosion problems exist. On the beach itself fluorescent tracers were used. For the evaluation of the silting-up rate of the access channels to the harbour a series of radioactive bottom and suspension tracers were tracked in situ . For determining the efficiency of future dumping grounds a combination of bottom tracers and suspension tracers was used. In total, 18 experiments with radioactive tracers were carried out and 9 with fluorescent ones.
Bulletin International Navigation Association, 2008