Publications associées à Moteur-fusée à ergols liquides

Stick-slip-to-stick transition of liquid oscillations in a U-shaped tube

François Gallaire, Alessandro Bongarzone

The nonlinear decay of oscillations of a liquid column in a U-shaped tube is investigated within the theoretical framework of the projection method formalized by Bongarzone et al. [Chaos 31, 123124 (2021)]. Starting from the full hydrodynamic system supple ...

Amer Physical Soc2024

Interpretative 3D MHD modelling of deuterium SPI into a JET H-mode plasma

Cristian Sommariva, Umar Sheikh, Haomin Sun, Mengdi Kong

The pre-thermal quench (pre-TQ) dynamics of a pure deuterium ( D 2 ) shattered pellet injection (SPI) into a 3 MA / 7 MJ JET H-mode plasma is studied via 3D non-linear MHD modelling with the JOREK code. The interpretative modelling captures the overall evo ...

Iop Publishing Ltd2024

Design, computational and experimental investigation of a small-scale turbopump for organic Rankine cycle systems

Jürg Alexander Schiffmann, Sajjad Zakeralhoseini

The hydraulic design, computational analysis, and experimental investigations of a high-speed small-scale turbopump for mobile waste heat recovery applications based on organic Rankine cycle systems are presented in this paper. Such applications demand hig ...

2023

Super-harmonically resonant swirling waves in longitudinally forced circular cylinders

François Gallaire, Alessandro Bongarzone, Alice Evelyne Julienne Marcotte

Resonant sloshing in circular cylinders was studied by Faltinsen et al. (J. Fluid Mech., vol. 804, 2016, pp. 608-645), whose theory was used to describe steady-state resonant waves due to a time-harmonic container's elliptic orbits. In the limit of longitu ...

CAMBRIDGE UNIV PRESS2023

Covariant formulation of relativistic mechanics

Miguel Alexandre Ribeiro Correia

Accretion disks surrounding compact objects, and other environmental factors, deviate satellites from geodetic motion. Unfortunately, setting up the equations of motion for such relativistic trajectories is not as simple as in Newtonian mechanics. The prin ...

AMER PHYSICAL SOC2022

Design of an intake and a thruster for an atmosphere-breathing electric propulsion system

Francesco Romano, Thomas Binderup Jensen

Challenging space missions include those at very low altitudes, where the atmosphere is the source of aerodynamic drag on the spacecraft, that finally defines the mission's lifetime, unless a way to compensate for it is provided. This environment is named ...

2022

Unmoderated molten salt reactors design optimisation for power stability

Andreas Pautz, Axel Guy Marie Laureau, Andrea Bellè

The critical region of unmoderated molten salt reactors consists in a cavity filled with a liquid fuel. The lack of internal structure implies a complex flow structure of the circulating fuel salt. A preliminary core shape optimization has been performed d ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Re-entry analysis of critical components and materials for design-for-demise techniques

Pénélope Leyland, Stefano Mischler, Seong-Hyeon Park

The concern caused by the rising population of space debris has increased. One of the recommended mitigation measures is the safe re-entry disposal either in a controlled or uncontrolled manner. Performing a controlled re-entry, where the spacecraft is gui ...

2021

The effects of the tip clearance on the performance of small-scale turbopumps for ORC applications; analysis and modeling

Jürg Alexander Schiffmann, Sajjad Zakeralhoseini

In this paper, the influence of tip clearance on the performance of small-scale turbopumps is studied numerically on extensive parameter ranges suitable for organic Rankine cycle applications. A novel and fully parameterized design model is developed and u ...

Technical University of Munich2021

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Moteur-fusée à ergols liquides

Stick-slip-to-stick transition of liquid oscillations in a U-shaped tube

Interpretative 3D MHD modelling of deuterium SPI into a JET H-mode plasma

Design, computational and experimental investigation of a small-scale turbopump for organic Rankine cycle systems

Super-harmonically resonant swirling waves in longitudinally forced circular cylinders

Covariant formulation of relativistic mechanics

Design of an intake and a thruster for an atmosphere-breathing electric propulsion system

Unmoderated molten salt reactors design optimisation for power stability

Re-entry analysis of critical components and materials for design-for-demise techniques

The effects of the tip clearance on the performance of small-scale turbopumps for ORC applications; analysis and modeling

Direct conversion of plastic materials into methane and liquid fuels

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Chattez avec Graph Search

Stick-slip-to-stick transition of liquid oscillations in a U-shaped tube

Design, computational and experimental investigation of a small-scale turbopump for organic Rankine cycle systems

Interpretative 3D MHD modelling of deuterium SPI into a JET H-mode plasma

Super-harmonically resonant swirling waves in longitudinally forced circular cylinders

Unmoderated molten salt reactors design optimisation for power stability

Covariant formulation of relativistic mechanics

Design of an intake and a thruster for an atmosphere-breathing electric propulsion system

Re-entry analysis of critical components and materials for design-for-demise techniques

The effects of the tip clearance on the performance of small-scale turbopumps for ORC applications; analysis and modeling

Direct conversion of plastic materials into methane and liquid fuels