Skip to Main content Skip to Navigation
Theses

Études numériques et expérimentales des impacts hydrodynamiques primaires et secondaires lors du tossage de sections de carènes

Abstract : This work involves modeling and studying the phenomena of flow separation and secondary hydrodynamic impact that can occur during ship slamming. A hydrodynamic impact is a shock between a liquid and a solid. This is a very common phenomenon in nature and is a problem in many industrial fields, including marine and offshore engineering. The main objective of this work is to study secondary impacts, that is to say impacts on the upper parts of a ship after flow separation, following the primary impact. 2D and 3D numerical models using the VOF method and an Euler-Lagrange coupling technique were developed. Two configurations were studied: a ship section with a roll angle and wedge with a bulb on their lower part. In parallel, experimental tests were carried out using a hydraulic impact machine. Comparisons between tests and simulations have generally supported the numerical approach. An interesting phenomenon of secondary force peak related to the rapid contraction of the air cavities generated by the impact was demonstrated, both numerically and experimentally.
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-03406237
Contributor : Abes Star :  Contact
Submitted on : Wednesday, October 27, 2021 - 6:06:12 PM
Last modification on : Thursday, November 4, 2021 - 3:40:19 PM

File

2021_yann_richard_these.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-03406237, version 1

Citation

Yann Richard. Études numériques et expérimentales des impacts hydrodynamiques primaires et secondaires lors du tossage de sections de carènes. Milieux fluides et réactifs. ENSTA Bretagne - École nationale supérieure de techniques avancées Bretagne, 2021. Français. ⟨NNT : 2021ENTA0001⟩. ⟨tel-03406237⟩

Share

Metrics

Record views

71

Files downloads

63