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arXiv · 2208.05715

Analytical validation of the helicity conservation for the compressible Euler equations

Yanqing Wang·Wei Wei·Yulin Ye
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Abstract

In [25], Moffatt introduced the concept of helicity in an inviscid fluid and examined the helicity preservation of smooth solution to barotropic compressible flow. In this paper, it is shown that the weak solutions of the above system in Onsager type spaces $\dot{B}^{1/3}_{p,c(\mathbb{N})}$ guarantee the conservation of the helicity. The parallel results of homogeneous incompressible Euler equations and the surface quasi-geostrophic equation are also obtained.

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Yanqing Wang, Wei Wei, Yulin Ye. 2022-08-11. Analytical validation of the helicity conservation for the compressible Euler equations. https://arxiv.org/abs/2208.05715

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