The influence of aeration and compressibility on slamming loads during cone water entry
TypeArticles dans des revues avec comité de lecture
The problem of the impact between a rigid body and a gas-liquid mixture is relevant to various engineering applications, including the design of breakwaters and LNG containers. In the present study, the specific problem of the impact of a rigid cone upon the surface of an aerated liquid is investigated. Numerical simulations of water entry of cones with different dead-rise angles (7° and 15°) were performed using an explicit finite element method. The air-water mixture is modelled as a homogeneous fluid with a specific equation of state. In addition, experimental tests of the impact of a cone with a dead-rise angle of 7° on the surface of bubbly water were performed. The air volume fraction was measured prior to the impact tests using optical probes technique, and the instantaneous impact force on the cone was measured using strain gauges. The results highlight a significant reduction of the impact load with the increase of the air volume fraction. Moreover, the numerical results show that this reduction is also dependent on the impact velocity. This phenomenon is found to be related to the nonlinearity of the equation of state of the air-water mixture.
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
ELHIMER, Mehdi; EL MALKI ALAOUI, Aboulghit; CROCI, Kilian; GABILLET, Céline; JACQUES, Nicolas (ASME, 2015)The phenomenon of slamming on a bubbly liquid has many occurrences in marine and costal engineering. However, experimental or numerical data on the effect of the presence of gas bubbles within the liquid on the impact loads ...
CROCI, Kilian; ARRIGONI, Michel; BOYCE, P; GABILLET, Céline; GRANDJEAN, Hervé; JACQUES, Nicolas; KERAMPRAN, Steven (2014)Mine fields and UneXploded Ordnances (UXO) become a danger regarding maritime activities. Since UXOs are strongly affected by marine corrosion after decades, they cannot be handled safely. A safe solution to get rid of ...
Critical review of multi-criteria decision aid methods in conceptual design phases: application to the development of a solar collector structure EL AMINE, Mehdi; PAILHES, Jérôme; PERRY, Nicolas (Springer, 2014)At each stage of the product development process, the designers are facing an important task which consists of decision making. Two cases are observed: the problem of concept selection in conceptual design phases and, the ...
PERRY, Nicolas; EL AMINE, Mehdi; PAILHES, Jérôme (Elsevier, 2015)Rework tasks in collaborative development projects dealing with immature design concepts are very frequent and are responsible of cost overruns and schedule delays. Taking into account uncertainty and accuracy of models ...
PERRY, Nicolas; AMINE, EL Mehdi; PAILHES, Jérôme (Elsevier, 2015)Rework tasks in collaborative development projects dealing with immature design concepts are very frequent and are responsible of cost overruns and schedule delays. Taking into account uncertainty and accuracy of models ...