PIE ArianeGroup
An INSA Enterprise Project (~6 months)
Date: 1st Semester 2024
Overview
Project supervised by part of the Coria-CFD team which provided us with the YALES2 software. The objective was to carry out a study for ArianeGroup. The project focused on simulating a multiphase flow in a cryogenic tank subjected to various intensities of sloshing, aiming to study the impacts of high-pressure and low-temperature conditions.
A key aspect of the study involved comparing simulation results with experimental data from Himeno's studies, which provided valuable insights into the liquid-gas interactions during sloshing events and helped validate our numerical model.
Key Features
- Multiphase Flow Simulation: Study of a cryogenic tank subjected to sloshing.
- Thermal and Pressure Modeling: Analysis of heat transfer and pressure variations in extreme conditions.
- Numerical Simulation with YALES2: LES simulation with thermal and phase-change modeling, using conservative level-set methods and dynamic mesh refinement.
Technologies Used
Computational Tools & Services
| Technology | Badge | Purpose |
|---|---|---|
| YALES2 |  | LES simulation for multiphase flow with phase change and thermal modeling |
| ANSYS Mesh |  | Generation of meshes for simulation |
| CWIPI |  | Coupling of phase-change solver and heat transfer solver |
| CRIANN Supercomputer |  | High-performance computation with up to 192 CPU cores |
| Paraview |  | Post-processing and visualization of simulation results |
| Python |  | Data processing and analysis for simulation results |
Documentation
Web Development
| Technology | Badge | Purpose |
|---|---|---|
| Vue.js |  | Framework used for creating the interactive documentation |
| VitePress |  | Static site generation for the documentation |
| HTML5 |  | Structure of the website |
| CSS3 |  | Design and layout of the website |
| JavaScript |  | Core logic of the website and simulations |
| Markdown |  | Lightweight markup language for writing documentation |
| LaTeX |  | Typesetting system for mathematical equations and scientific writing |
Backend
| Name | Badge | Purpose |
|---|---|---|
| LAMP Stack |  | Full-stack solution for web development |
| Apache2 |  | Web server for hosting the PHP application |
Hosting & Version Control
| Name | Badge | Purpose |
|---|---|---|
| OVH |  | Hosting provider for the web application |
| Cloudflare |  | Web infrastructure and website security company |
| GitHub |  | Version control and collaboration platform for the project |
Reporting
| Technology | Badge | Purpose |
|---|---|---|
| LaTeX | | Typesetting system for mathematical equations and scientific writing |
| Overleaf |  | Online LaTeX editor for collaborative writing |
Challenges and Learnings
- Simulation Setup: Developed step-by-step, starting from a simple incompressible solver to a complex phase-change solver, integrating thermal and fluid dynamics.
- Computational Resources: Faced challenges with limited local resources, leading to reliance on the CRIANN supercomputer for high-resolution simulations.
- Sloshing Dynamics: Investigated sloshing intensities from 0.0g to 0.5g, analyzing the effect on pressure and thermal flux within the tank.
Showcase
Project Organization
To ensure the success of our project, a rigorous organization was put in place. We opted for a dedicated website to facilitate the tracking of our progress. Here are the main elements of our organization:
- Weekly Reporting: Each week, we produced a report summarizing our progress, positive points, and elements requiring clarification.
- Meeting Minutes: We documented the participants and topics discussed during each meeting, along with important decisions for the future of the project.
- Resource Sharing: The website allowed us to centralize all our videos, photos, graphics, animations, and codes, making access to all data easier without version or size constraints.
- Facilitated Monitoring: This platform provided valuable flexibility and support, allowing our supervisors to more effectively follow our project.
This structure enabled us to stay focused on our objectives while maintaining clear communication within the team.
| Weekly Report | Research Progress |
|---|---|
 |  |
Final Results
Comparison for sloshing intensities of 0.0G, 0.3G, and 0.5G, showing the impact on the liquid-gas interface and pressure distribution. Δ physical_time = 3.0s.
| Temperature | Velocity | Liquid-Gas Interface |
|---|---|---|
BACKGROUND_PRESSURE | GAS_TEMPERATURE |
|---|---|
 |  |