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Stability assessment of an optimized cooling configuration of a fusion gyrotron resonant cavity through an analytical model

One of the main issues for the gyrotrons remains an efficient cooling of the resonant cavity, as the high amount of energy released on its inner wall leads to high temperatures, cavity expansion, and subsequent frequency downshifts in the electromagnetic power, reducing the efficiency of the tube, resulting in a multi-physics problem. Moreover, the heat load released is not uniform, causing thermal gradients in the cavity structure and, consequently, thermal stresses. In a previous optimizati...

Impact Assessment of Radiative Heat Transport in ARC-Class Reactor FLiBe Liquid Immersion Blanket

Molten salt systems have become of growing interest in the energy industry due to a wide range of applications (concentrated solar power systems, energy storage, Generation IV fission reactors, and high magnetic field fusion reactors). Because of the high temperature that characterizes such materials, radiative heat transfer (RHT) may become a nonnegligible heat transfer mechanism in molten salt components. In this paper, an investigation of FLiBe RHT has been conducted, with a focus on Affor...

Experimental evaluation of mechanical compression of lattice trusses made with Ti6Al4V for aerospace use

Lattice structures are three-dimensional structures composed of repeated geometrical shapes with multiple interconnected nodes, providing high strength-to-weight ratios, customizable properties, and efficient use of materials. A smart use of materials leads to reduced fuel consumption and lower operating costs, making them highly desirable for aircraft manufacturers. Furthermore, the customizable properties of lattice structures allow for tailoring to specific design requirements, leading to ...

Evaluation of Sonic Boom Shock Wave Generation with CFD Methods

Over the past two decades, there has been a renewed interest in the development of a new generation of supersonic aircraft for civil purposes that could potentially succeed Concorde. However, the noise annoyance is still considered one of the hampering factors to meet public consensus. This paper aims at revealing the potential of numerical simulations to predict sonic boom signature in Near Field at early design stages. In particular, the paper further demonstrates the applicability of the n...

The Zero Regrets Algorithm: Optimizing over Pure Nash Equilibria via Integer Programming

Designing efficient algorithms to compute Nash equilibria poses considerable challenges in algorithmic game theory and optimization. In this work, we employ integer programming techniques to compute Nash equilibria in integer programming games, a class of simultaneous and noncooperative games in which each player solves a parameterized integer program. We introduce zero regrets, a general and efficient cutting-plane algorithm to compute, enumerate, and select Nash equilibria. Our framework le...

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