Skip to Main content Skip to Navigation
Theses

Simulation numérique du ballottement d'ergol et modélisation de l'interaction fluides-membrane dans un réservoir de satellite

Abstract : Propellant sloshing in tanks is one of the most important disturbances of satellite stability in orbit. Considering low-inertial manoeuvres, there is no analytical model and experimental facilities require long time period of microgravity conditions. Thus, this PhD thesis aims to predict this phenomenon by numerical simulations. The study is based on the DIVA code which solves the Navier-Stokes equations for two-phase flows with the level-set method and the Ghost Fluid method. Two tank technologies are studied: simple tanks, which only contain the liquid propellant and the gas maintaining the pressure, and diaphragm tanks, for which a hyperelastic membrane separates both fluids. In the first case, a parametric study on the sloshing effects is done considering rotational manoeuvres and the different behaviours observed are described in relation to the study parameters. Thereafter, the data from the FLUIDICS experiment, sent to the International Space Station, are compared to the numerical results and exhibit good agreement. In the second case, a fluids-membrane interaction model inspired from works on the deformation of biological cells is developed. The membrane strains and stresses are computed in an Eulerian way, from which the force exerted by the membrane on the surrounding fluids is deduced and integrated in the two-phase flows solver. The numerical results are validated by comparison with benchmarks from the literature.
Complete list of metadatas

Cited literature [200 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-02328897
Contributor : Abes Star :  Contact
Submitted on : Wednesday, October 23, 2019 - 1:22:08 PM
Last modification on : Saturday, August 15, 2020 - 3:46:31 AM
Long-term archiving on: : Friday, January 24, 2020 - 4:53:58 PM

File

2018TOU30256a.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02328897, version 1

Collections

Citation

Alexis Dalmon. Simulation numérique du ballottement d'ergol et modélisation de l'interaction fluides-membrane dans un réservoir de satellite. Mécanique des fluides [physics.class-ph]. Université Paul Sabatier - Toulouse III, 2018. Français. ⟨NNT : 2018TOU30256⟩. ⟨tel-02328897⟩

Share

Metrics

Record views

82

Files downloads

113