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Data analysis of an oscillating flapping wing is conducted for developing a transfer function model especially for heave force data series from the CFD environment for different geometries of flapping wings. The wing experiences a combination of vertical and angular oscillatory motion, while travelling at constant forward speed. The vertical motion is induced by the random motion of the ship in waves,...
In this work performances of two different wave spectral models (Wavewatch III and SWAN) are presented. Results are compared with those provided by a validated meteocean modelling chain. Potentialities and deficiencies of either the models are evaluated in relation to their numerical accuracy and ability to represent coastal processes. Both of the models are applied to a coastal area belonging to...
Results of a one year hindcast wave simulation using four different modelling approaches are compared against measurements in Liverpool Bay in the Irish Sea, where an offshore wind farm is located. The different modelling approaches include the use of global or mesoscale wind as forcing, the use of different complexity in shallow water parameterizations and different spatial resolution. Comparisons...
Marine survey provides many kinds of oceanic samples and large volume of corresponding data, which are treasurable materials for further scientific researches, and should be shared among scientists, agents or organizations from different areas. In this paper, we contribute to the design of a domain-specific provenance model based on the PROV-DM model for Marine survey project. We start from an analysis...
The aim of this paper is to present a model for the throughput of the 1-persistent CSMA protocol in underwater networks, where the typically large propagation delay with respect to the packet transmission time requires to take into account the spatial distribution of the nodes. Our model is developed based on the analysis carried out in [1] for the non-persistent CSMA protocol. Our results show that...
Energy is always the most limited resource when the AUVs carry on activities in the sea. When the AUV sails near the water surface, it will be disturbed by the sea waves and the AUV will undertake some motions that are not wanted. At last the resistance of the AUV will be increased, because of these not wanted motions. So it is urgent to minimize the resistance caused by the AUV motion so as to decrease...
Self-Organising Maps (SOM) method has been used for obtaining characteristic surface wind patterns modelled by two state-of-the-art mesoscale meteorological models, Aladin/HR and WRF-ARW, operational in the northern Adriatic. SOM patterns encompassed major wind regimes in the area, bura, jugo and maestral-tramontana winds, which did not differ much between models. However, the largest difference occurred...
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