Claude Naiver work on Navier-Stokes equations

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The discussion focuses on the two significant works of Claude Navier regarding fluid dynamics: "Sur les lois des mouvements des fluides, en ayant égard à l’adhésion des molecules" (memoire 1) and "Sur Les Lois du Mouvement des Fluides" (memoire 2), both written in 1821. Memoire 1 is noted for introducing the viscous term μ∇²u, which is crucial for understanding fluid motion. The participants express difficulty in locating a PDF of memoire 1, while confirming the relevance of the formulations presented in both works.

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I am interested what are main differences/news in two Claude Navier works "Sur les lois des mouvements des fluides, en ayant égard à l’adhésion des molecules"- memoire 1 and "Sur Les Lois du Mouvement des Fluides" memoire-2?

Are both works written(not published) in 1821? Does memoire 1 introduced visocus term μ∇2u?

I cant find pdf of memoire 1..

"Sur Les Lois du Mouvement des Fluides"
https://perso.crans.org/epalle/M2/EC/Histoire/Navier1822MemoireSurLesLoisDuMouvementDesFluides.pdf

Is this formulation(dont have to be same notation) what Navier introduced in 1821 memoire 1?
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